Tuning boost vs timing. HB 2300 blower and full exhaust.

Tuning boost vs timing. Tunes are a popular performance mod on many engines – including the 3. Mar 8, 2010 · The n/a maps are so important, because I consider it the baseline from which I'll pull timing in the higher kpa cells. It's also a T56 car. hpt LS3 with 22x/23x . The amount of timing to add depends on how octane limited your tune is. Some are the opposite of that. Is mid to upper twenties pretty standard for an NA ls engine or is higher pretty normal? What do you tend to see for maximum timing for maximum power output? Jun 17, 2010 · Air fuel Ratio (AFR): Lean vs. I believe in the more boost vs timing school of thought. Seems that a lot of the combos running around with a good or "safe" tune up have a boost figure and timing figure that total around 28-30. When I tune I look at what the car can hold in terms of TQ. It all depends on what the car likes. Using Boost and Turbo Timing in an RC Drag Car: In RC drag racing, both boost and turbo timing can be very useful. 5* = 17. 9psi) increase in boost you find at 46 psi you are running around 1 how much power is timing worth on my turbo motor? what is the best a/f ratio? will my na motor run a 9:1 af? what happens if my tune is off? will my motor st May 24, 2019 · 🔥 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: https://hpcdmy. Let us consider an RB26 running say 46 PSI of boost using q16 fuel. 0 AFR region at anything about 4PSI boost. 040. Timing the arrival of the spark at different engine … Jul 16, 2009 · High compression: Low boost, maximum engine rodding/coating, tune for low EGT and rich mixture all the time, keep timing conservative and run a cold thermostat, timing should fall back dramatically with boost, don't trust active knock control, consider 2 map tuning for street/track. 6. A flash tune completely rewrites the stock boost, timing, and fueling tables. 12:31: And what we're looking for is the ignition angle where the torque first peaks. I’m hoping that more RPM/less timing will make more boost on the brake. Keep your worst case correction factors in the single digits, and always carefully monitor your timing retard. Mar 20, 2020 · The values in each column also vary so the tuner can run less boost in 1st gear (85% of max), gradually feeding more power in as you go through gears 2 (90%) and 3 (95%), until 4th gear has full boost (100%). 3 swapped 91 firebird. 73@117. 0 a/f (lamda . Advanced tuners can get deep into the boost with wastegate dome pressure control, boost by time, gear, RPM, and speed, and you can incorporate boost safeties should things go awry. I am transitioning to tuning Subaru's from tuning Hondas via Hondata, where most of my experience is based on tuning fuel and ignition based on injection time and boost pressure for load. 12-13 AFR depending on the RPM, with timing apparently close to stock. 3 with LS6 cam, LS1 intake manifold & injectors, longtubes, exhaust, and intake. Then use the simple formula to fill several XY points on the map, select the entire map area and then click on interpolate. Jun 19, 2010 · If your question is what gives a bigger effect on a bone stock engine and stock turbo, I don't think we have that data. MBT at peak torque 7000 RPM and 29 psi is around 13*, using a general guide of 2 degree less of advance for every 20KPA (2. 5 psia) 5. Dec 10, 2023 · The basic idea of tuning is to simply re-write the parameters in the powertrain control module (PCM). you can to a point keep adding boost and make power until the turbo runs out of breath ( good enough fuel to avoid detonation ) but lighting it all off to soon with timing soon becomes a bad thing. My car can do 350 TQ before things start to get weak or break. I think that the old skool MSD boost timing retard module pulls 2 degrees per pound of boost, some of the later ones don't start pulling the timing until after ~4. LS3 HB2300 11psi. 3 is set at 28. Get 50 Whether you’re tuning a turbocharged or naturally aspirated (N/A) engine, what you’re trying to do is to optimise the fuel delivery to suit the mass of air entering the engine, and to optimise the ignition timing so you’re creating a spark at the right point in the engine cycle to achieve maximum torque - this is referred to as MBT timing. 29@107 with a headwind May 23, 2014 · Tuning Timing. 7813) would be a good place to start. 06 2006 GTO - Parted out LS2 447: All Motor 6. /ProCam Tuner, Crew chief of David Adkins 63 LSX Impala. Most other timing boxes on the market will max timing if boost is up after ~2500 rpm Jul 15, 2021 · I am tuning my first lm7 timing and am used to SBC timing. Power gains are typically modest on naturally aspirated engines. 0L engine, the famous '4g63' using 93 octane gasoline. On a Castle Creations ESC, it can only be selected while the power system is operating in sensored mode. Here is an 2. Some are rough around the edges and downright skittish below 3,000 rpm. 12:38: Now that point is known as MBT which stands for maximum brake torque timing. 5 AFR on the transition into boost not 17:1 like As a result, you can see a typical turbocharged engines map here (Running to 1. Timing advance will start at a predetermined minimum RPM threshold. Boost Timing for Acceleration: As drag racing is all about quick starts, boost timing can be set to optimize low-to-mid range acceleration, helping the car to leap off the line and reach higher speeds more quickly. . The formula for HP = TQ*RPM / 5252. Now, with the new Boost vs Dome mode, there is a less heavy-handed measure. Now if you go e85 that's a different story. Jun 15, 2017 · On the contrary, a flash tune completely remaps or reprograms the stock ECU; this is installed by flashing the new software through the OBD port. ignition timing throughoutthe operating range of your engine. Jul 28, 2021 · Tuning Basics. Now the map points can be easily calculated such as the following: 35psi - 10psi= 25psi (net) × 0. and 12 degrees vs 19 degrees of timing at peak hp is a little bit more than 10hp Sep 27, 2018 · This also depends on the specific power level of the engine. ) Knock Safeguards (Disable Boost Control, Switch to failsafe fuel map) Jul 9, 2020 · how much does a/f & timing change power? we alter the a/f by going from 76 jets to 100 jets (that's 24 jet sizes!). It also helps get the spark past the ignition delay and run at peak power. My current timing on the 5. 600ish 114 cam manual. The scalar is the overall max allowed Desired TIP. i know someone will chime in that knows more than me on this, but this is my thinking and what i was told. So what I do is start by having a base line timing map like Andre talks about in his video. and it starts at 12. Max vs Turbo Airflow is the variable Max. 5 psi. Boost Timing. This table gives you a general idea of during starting, idle, cruise, transition or high load, and deceleration. If it was me I would keep the timing the same and just bump the boost up 1-2 psi. Looking at load instead of boost gives a better representation of what the engine wants. 12:50 May 20, 2019 · ESC Boost ( common for RC Cars only ) Boost timing is typically activated when selected on your ESC programming screen. 5th gear actually makes the same boost as 4th in this example, but due to the additional load on the vehicle, 5th gear requires a little Feb 4, 2012 · Whats the most timing youve seen running boost on E85? I have a sbc on E85 and am tuning to about 25psi on a chassis dyno. ignition timing and I am interested in learning more about that relationship. May 7, 2005 · If you are looking at it for power management, boost has a bigger effect then timing but timing reacts quicker. 19@183 Dec 2, 2021 · The tuning software doesn’t stop with the basic controls either. USA. Recently while looking through Jun 19, 2010 · If your question is what gives a bigger effect on a bone stock engine and stock turbo, I don't think we have that data. My plan is to up the 2 step RPM up significantly to get the boost up on the brake, and then take power out via timing. If nitrous is your preferred power adder, you have full control to set activation windows, timing Mar 7, 2015 · The two are linked, but the relationship between them is unique for each engine combination. Ex. We always start out with conservative timing values and dial in the air/fuel mixture before increasing the timing. 625 lamda) under full load and go from there. 20 PSI, a leaner mixture and lower timing advance, I almost always find better power in the leaner mixture. There are benifits to going higher, like reduced EGT's but be aware of the risk. 60g/cyl . The 1 bar MAP channel must be removed for accurate data. 2016 Silverado CCSB 5. Flashing the computer allows for greater accuracy, but is more complicated than simply piggybacking the ECU. Mar 9, 2016 · Take max boost the engine will see, such as 35psi, deduct the 10psi boost that we will not pull timing and this gives us 25psi net boost. 035 and . Jan 30, 2006 · For example, tuning a motor at 20 PSI with agressive timing and a rich mixture vs. 5* of timing. com Jul 11, 2023 · Injection timing is a major player in the performance venue which will influence combustion outcome and cannot be ignored when discussing ignition timing. 6 seconds that it usually takes for boost to come up. Specifically in regards to ignition timing, Boost levels, head gaskets, Head stud torque settings and cylinder pressures etc. 2011 White Pearl CTS-V Bone Stock 11. The amount of timing retard rate is programed relative the the boost increase rate. So which is best? Why the differences? Apr 9, 2011 · This makes spool up and launch area pretty simple. 6 load. plugs Jimmy, Stock injectors, no AFPR, no boost gauge (stock truck except for the things mentioned in the top post). Aug 27, 2011 · I am in desperate need of some expert advice from any tuner who is experienced with high boost Sohc d16z6 vtec engine. Sep 29, 2011 · i asked Jim Sr. Sep 3, 2014 · Then I can ramp the timing back in quicker then 0. 20psi is not a lot of boost and you should be able to get timing in the high teens depending on what turbo it is and a few other things. On my car, I can only run 14 (timing at -2 on the sliders) to 16 (0 adjustment) on pumpgas @21psi. my total timing on the SBC was 36ish. 3/6L80e, not as slow but still heavy. TJ at Baker Engineering Inc. 10 LEAN SPOOL ON Now let's Apr 23, 2012 · Tune it for 12. Oct 26, 2024 · When running elevated boost on pump gas, you may have to cut requested timing at peak load to prevent timing retard (dwkrz). As far as timing goes, I have found it depends on your head/piston combo. Like the rest of these timing tests, the change in timing occurred during the initial tuning of the motor. Rich Fuel: 91, 93, E85, Race Fuel MIVEC: Intake & Exhaust Timing Boost Solenoid Settings: Duty Cycle % Ignition Timing: Increase vs. Cylinder pressure is the primary deciding factor when considering how much less timing is needed under boost compared to the same engine under atmospheric conditions. 0 a/f (. If your knocking and you have the ideal a/f ratio, then a) retard timing or b) turn down the boost. taking -1* of timing at ~35psi of boost on 93 octane fuel for 600rwhp. Before you reach boost (0-14. Beaner, The injector duty cycle jumped out at me, too. 5* timing pulled from 30* (base) - 12. Jul 8, 2015 · The boost was also much higher on the supercharged combination (19 psi vs less than 6 psi on the turbo). Aug 26, 2010 · A/F and timing will depend on boost and the rest of your combo. How can I see if the IC pump is working? The PO put a hotwire kit and Shurflo (??) in. The idea of a tune is to re-write or modify engine parameters in the cars computer (ECU, ECM, DME) such as ignition timing, boost, fuel delivery, etc. I then go to the high octane fuel table and and adjust the row for desired timing at 2psi . 45 Bar of Boost, 245kPa): As a rough guide, most engines will idle at around 10-20* of May 28, 2015 · Actually, it was very lean - but yes plenty of timing. 5:1 or less and 8 psi boost you want the timing to retard to about 27deg (26 to 30deg) when its under the full boost (8 psi) . Some cars make more power with high boost like 35+ and moderate timing than they do with lower boost like 30psi and a lot of timing. So for example, if you MBT out at 35 degrees at 3k rpm, then for maximum e Feb 6, 2017 · For the original poster. Dome pressure control mode, Holley added a maximum boost table in addition to the normal target dome pressure table mode above it. from JDM that question and he said with our motors he likes more boost and less timeing due to denation. Moreover, I don't think you have to choose one or another, you can both raise boost and then fine tune timing on a dyno to get the best tune. Apr 10, 2011 · Premise - How to setup a spark table to begin tuning Ignition timing makes torque, and torque makes power! At very low loads at barely part throttle most engines typically need 15 degrees of timing more than MBT at WOT for that given rpm. Better to start with rich fueling, LOW AFR, and work your way up. 5 = 12. 12:44: Also is known as minimum timing for best torque. HB 2300 blower and full exhaust. Or 18* of timing with 12 psi of boost. co/vipy128🦵Kickstart your EFI Tuning knowledge. Hello, I?m logging g/cyl vs rpm and using that data compared with boost to determine timing at a given boost level. Steve, please correct me if I'm wrong. If you are running studs then the risk is nominal. Good luck. Mustang 2. I would rather see 18lbs with 18 degrees vs more boost and less timing. Boost and Turbo can be used independently, or together for maximum effect. Retard timing causes the spark plug to fire later in the compression stroke. Apart from that I didn't use pcmtec to do the tune so I reckon some of what I did before will be different when I retune it with pcmtec. Then start the boost at 15 - 20psi and watch the TQ climb. Boost timing takes effect at a predefined RPM range that you program on the ESC. Subaru ECU's (via Cobb) use a calculated load (g/rev) vs. My motor at 15 psi was fuel limited and ethanol helped make more power at the same pressure. Nov 4, 2012 · its always better to make the power with boost and not timing. With the Boost vs. Lower load to initiate Open Loop Gearing: Short vs Long Gears 2008 vs 2010 ECU: 08 LEAN SPOOL OFF vs. 19@183 Aug 27, 2011 · I am in desperate need of some expert advice from any tuner who is experienced with high boost Sohc d16z6 vtec engine. In my opinion, the leaner mixture is actually better, because a higher timing advance is more prone to detonation then the lean mixture with low advance. Some racers only use Boost, and some only use Turbo, so it is all down to personal preference. 8-12. With e85 you could easily add 4-5 degrees of timing with your current boost as long as you have the fuel system to support it. The first step in calibrating the MBT Timing table is to use the table below to fill in your timing values. Generally with the drag engines I tune I'll be a little conservative on timing and use a little more boost to get the power where I want it. In my data log I see 2psi at . say afr is a little fat and safe and in the 1/8 the IAT is = to outside air Mar 19, 2013 · PCM Diagnostics & Tuning - HP tuners - 5. Min vs Turbo Airflow is the minimum Desired TIP can be, and effectively is what the TIP would be if you had 0% WGDC (spring pressure). 3 timing table vs LS1 timing table - Hey all. Jul 22, 2016 · ** please consider the risks of running high timing, Typically stock tuning allows for up to ~26* at 3k rpm. These values will get you in a safe area to start the tuning Mar 1, 2021 · Advancing the ignition timing helps raise the high-end power while reducing the low end. Jan 30, 2009 · if you have a stock bottom end or even a rod and piston 6. Retard Timing Closed/Open Loop Tables: Higher vs. Sep 16, 2014 · Hey guys, I'm new to the whole ls/turbo thing but I've noticed something. The three you have there are effectively 3 limits. For every PSI above 10psi pull 0. 2. 5* @35psi. difference being its straight into the 11. All respond to ignition timing a little bit differently. 3 EcoBoost tunes essentially increase turbo boost pressure (PSI). A safe place to start would be @ 4. Post by gearhead290 » Mon Jun 12, 2006 6:58 am. 11psi full boost pump fuel. Jul 11, 2015 · For pump gas and a low compression ratio engine (8. 0 LS with 317 heads lets say on the T brake you have 9lbs of boost and 27 degs of timing at the release and at lets say 25lbs of boost the timing has tapered to 16 degs and stays there the remaining of the run. we change timing by 25 degrees, from 36-1 Jun 12, 2006 · boost timing, knock, and tuning. from what he told me and what i gathered our motors wont tolerate high timeing vs a 4v motor. 36@219, 4. How much does Ignition Timing Affect Horsepower - SBE LS Turbo - Holley EFI - Terminator XTurbo Foxbody Mustang on the dyno, we test multiple different timi - The Desired TIP stuff is a little off. Except with large turbos that are capable of much more air flow than pump gas can handle, then there is often a boost-timing cycle that iterates until you reach the maximum boost with low enough EGTs. Nov 29, 2014 · Finding Top Dead Center and Setting up Timing Curves All engines have personalities – some are aggressive, some are demure. If anyone has experience or could push me towards someone who does please chime in or PM Thanks for Jul 7, 2014 · Re: Timing advance and boost - DM vs. 13-16 degrees of timing is pretty good on a turbo LS when you want to keep it in the safe zone. 5L V6 – for good reason. Apr 3, 2014 · That's on the edge imo. If you can add timing to your 93 octane tune and lose power timing won't change much. Now, real world results. For instance, some will run 14* timing with 15psi of boost. To account for the increase in air-flow a tune also modifies ignition timing, AFR’s, fuel delivery, etc. So this is the effect that we see when we're tuning the ignition timing. A low power engine will be much more tolerant of light knock than a very high power engine so you need to keep that in mind. Take max boost the engine will see, such as 35psi, deduct the 10psi boost that we will not pull timing and this gives us 25psi net boost. Subaru ECU Timing Control Methods Fine Learning Knock Correction (FLKC) Feedback Knock Correction (FBKC) Ignition Advance Multiplier (IAM) Timing Advance (Maximum) Tables Base Timing Tables Other timing compensations (ECT, IAT, per cylinder, etc. May 12, 2023 · Previously, there was a boost safety that that would shut things down completely when boost hit a user-programmed number. The size and complexity of the race track should help you decide what to use. 6 A/F and keep the timing 25-28 max. The effects of retarding ignition timing include reducing engine detonation, which is combustion inside Mar 23, 2017 · (3)I won't be juggling two tables because I'll have only 93 in the cell while I do the initial tuning so the timing offset for E85 won't come into play until I add E85 to the fuel cell, You also have to keep in mind that pulling timing as boost rises and adding timing in relation to ethanol percentages are two completely different events. the last time out it was happy with alot more timing than I thought it would like. Plugs are NGK UR6 and gap is between . it takes the commanded high octane values at WOT no issues and would likely take more in the low RPM area. Dec 23, 2015 · Hi All, I have a question concerning the ignition timing on a very high boost engine. The tuner said he had it going from 18-21* timing towards the top of the RPM band when I had it tuned in March, so when I look at the spark tables he was commanding 19* @ 6000, with another 3* of PE-based timing, in addition to leaving the IAT-based and ECT-based timing Sep 27, 2018 · I had a modified borderline knock map to suit my slightly larger turbo and boost pressure on 98 octane that I added some timing to from 1 to 1. Oct 11, 2004 · Start with the boost that you want to run and then adjust timing from there. See full list on enginebuildermag. Just started playing with HP tuners on my brother's 5. Nov 23, 2007 · In general tuning goes fuel-->boost-->timing in that order. degrees of timing retard per pound of boost. It's a basic stock 5. odflw krkt jnime pxub rymkdn ksmdoxs oauewo dbxau foq tovcq