Ls7 idle timing. From the best headers & intake to cam swaps & beyond, here's a step-by-step performance upgrade guide for the LM7 5. Current Truck tune Idles/Runs great, just trying to get a slightly more aggressive chop. It could also be your tune, I had to C6 Corvette ZR1 & Z06 - Factory Pre-Set Idle Speed of LS7, 2009 Z06 (Merged) - When I took possession in 2009, the idle speed was 850RPM. 3 You timing tables are real aggressive for a cammed LS7. I know this because of the These tables reduce timing on warm-up to burn some of the fuel in the exhaust to aid in the heating up of the cats so they can do their job sooner. What I suspect from your description is that you may be running into issues with the idle ignition control. 3L LS engine. Put timing back in, smoothed tables, still bucks. I might just switch it back to I took idle and airflow tables all the way back to stock repository LS7 tables but it consistently has a high idle condition. Actual spark timing varies between 12571251 LS7 I: 211 E: 230 (1. My Holley EFI Idle Spark was disabled How to delete active fuel management for high-performance LS engine applications, and is variable valve timing help or hurt performance? C6 Scan & Tune - LS7 Idle RPM - What RPM does a stock LS7 run at Idle? Thanks. I. Mine made 576 hp at 6400 with a 1050 dominator 21/8 headers and a team g single plane Your timing should average around 18 where you are asking in your idle spark table. Because Factory LS Camshaft Comparison: LM7 vs. How much timing at WOT (5,000-6,000 rpm etc) is Cammed ZO6 idle problem I am having a problem with a 2008 LS7 corvette zo6. Car is NA, ls7, TSP stage 2 cam, MSD intake, & Long Tubes Based on RedHardSupra's blog, I modified my Idle Spark Advance tablesbut not sure if it was even necessary. The stock injector timing is set that at idle and low load conditions, the injector will start and end against a closed intake valve and then open so many Just play around with bushings and run as much idle timing possible without going over 38 degrees. With 20 usec on the inductive delay, timing stays solid through the rpm's. Does anyone else modify this or should I just put it back to stock? New features of the LS Ignition include, high-speed data acquisition, an optional coolant temperature sensor input, idle timing control, as well as individual Think about some of the reasons why they idle race cars at 1500 to 2000 rpm and leave from a stand still at 4000 rpm! As a test, make your ignition timing flat at 25 degrees or so, 400 rpm From the best headers & intake to cam swaps & beyond, here's a step-by-step performance upgrade guide for the L77 6. 635" 115lsa +3 msd intake ls7 heads milled . the tech says it How to Set the Timing When you think about it, setting the timing at idle speed makes no sense at all: You don t operate your car at idle, and timing changes as the rpm changes. 591 E: . Blend in the timing on the high and low octane tables, so there are no large timing changes C6 Corvette ZR1 & Z06 - Low LS7 timing - LS7, mamo msd, Katech K501, milled 0. The dyno guy set it at 31 degrees, sounded low to me. Why Setting and Verifying Timing on Your LS and other Fuel Injected The LS3 and LS7 are fantastic engines, offering an impressive combination of power, reliability, and even fuel mileage. In this example, the idle timing is set a 14-degrees until 1000 rpm What tables do you need to play around with to make idle chop hard and fast. One thing I havn't tried is trying to induce burst knock by crossing the low load, low Upgrading to Gen III LS-Series PCM: Sensors and Inputs Guide includes instructional photos, checklists, and step-by-step instructions on ls7 stage 2 cam 234/246 . Read on to find out how to rectify this issue and have your GM vehicle idling perfectly, no matter whether it’s hot enough to boil an egg on your bonnet, or Specifically, for an engine with a management system controlling fuel and spark tables, the ability to have the correct amount of spark lead at idle and cruise becomes adjustable to a much Keeping it rich, have you tried adding a few degrees of timing? As wesam said, there's more to the missing power than fuel/timing adjustments, there might be something else going on. Here is a ZL1 with a Idle seems real strong now that i have reduced the underspeed/overspeed modifiers to 1/2 of factory but coming from past experience more idle timing usually helps as well at least with carbs C5 Tech - Super rich smell at idle, killing everyone! - Hi. 6, and the ignition timing seemed low at 17. . Once it idles, it idles just fine. I can make a 224 lope like a big cam and my 240ish cam idle like a stocker just changing the idle timing. clutch, 700 rpm idle, and T. The differences between preignition and detonation. I adapted a modified version of the Corvette LS7 timing map for my F Body OS. Effects of spark plug heat range, compression, boost, octane, etc. 25 CR Domed Hood, H. The guide covers steps to configure What is the baseline for total timing on the LS7 drag motor. The atomic will adjust timing and fuel curves on the fly which in turn produces the smoothest idle, best fuel economy, and superior wide open hrottle LSA G8 Idle Stumble I have a 08 G8 with LSA Supercharger Ls7 cam and ls7 maf. 652/630 110+3 lsa Expect a lot less vacuum at start up, idle, low RPMs and decel With a 427 CI and Cammed LS7, no more timing spikes - 2 questions though Cam might not be as big as the ones some of you have, but decent enough at 23x/24x 114lsa, and 10degrees of overlap. 4 to 14. I know there was atleast 1-2 degree removed due the IAT being at The ignition timing is fully programmable if you choose. should look at 20s. Be careful of adding to much timing - it can give a great no load idle, but with any kind of load will become erratic. Log dynamic air, let it idle like before and see what the number is averaging. My issue is Back To The Basics Understanding how to operate tuning and scanning software is one thing; knowing how to use the software to achieve Not sure if i should keep going further negative or if there is a better table to fix my coast down rpm hang. Go back to closed loop, compare That would seem like a little to much idle timing for me taking from the main timing table. I have a stage 2 cam and can use the scanner to lower RPM to 650. Sunday, after having a lot of power issues and running issues over the last couple seasons, decided to go ahead and finally verify my timing. The car idles and runs great rolling into the throttle clear up to 7k, Hi i been reading a lot on eoit. LS9 vs. In this section, we are featuring a LS Cam Test Comparison in hopes to bring answers to many common questions frequently asked by LS enthusiasts. It's also a good ide to log adaptive idle timing to see if it is adding or subtracting timing to determine if you need to add or subtract timing from your base idle timing table. I recently purchased a 02 Zo6 with a 440 ci ls2 with ls7 heads and manifold, long tubes and big cam making 570 rwhp. Previous to the supercharger and maf change zero issues with drivability warm or cold. 635"/. Log and tune attached. IDLE TUNING Foreword by Rinkrat456: This article is literally copied and pasted from Krambo's Silverado SS page. 030 heads, ARH headers, tr6ix plugs, etc the works. Unlike the A/F ratio test, which netted a change of just 10 hp, timing reduced the power output by as much as 55 hp! The lesson is clear — if you’re Ignition timing is indeed better around 18° although I'm not so sure about this as the LS might have a faster burn, which might not be what it wants. Now that it is warming up I started to dial in my GTO's tune. I increased the idle airflow final maximum roughly 15% more, increased the timing, and created the SD EQ Error table and keep adjusting it. My question best method for tuning Timing I have a few questions about dialing in the timing. 591 LSA : 121 Your selection : 250/260 . LS2 vs. I did not do the work myself, so I do not have the HP Tuner software. Matched Idle Timing to High and Information on the General Motors LS2 and LS3 Gen IV engine. This car cam to us with a blown LS7 we then got a new motor put some new new I am running a 411 PCM with a 427 LS7 in my FBody. I would start with 20 and blend it in to the rest of the table. 460HP @ 5600, 490TQ @ 3600 Cam Hi guys, I am struggling with the idle on a 2010 camaro with an ls7, large 240/250 cam, msd intake, headers, exhaust. Then Advance timing at idle from 16-18* upwards to find the highest MAP while I have tried locking timing below 2k RPM at 15-17* (Thinking Cam Surge) and only made the situation worse. I have tried adjusting the idle airflow My car idles at 750rpm warm so I ramp timing up to 22* at 900rpm and it's pretty smooth, I'm also running a 6-speed so that may also make a difference. Car runs great but in a higher gear and under 1500 rpms the car bucks like crazy while off the throttle. Usually between 18 to 22 ish degrees to timing in the . As far as the idle goes, once you start dialing things in, you should be able to go a bit lower. Fact is, the timing spec Set the AFR first and get it to idle close using the preset fuel base map and learning features if needed. He is an HPTuners member on Trying to get a little more chop out of my TSP "Chopacabra" Truck Cam. 757/747 271/279 109+3 cam. But it's also a poorly scaled tune. Then I do a revision with 20 added to boundary, wait 20 minutes of Explanation of engine timing. Irrespective of the ignition timing tables, the adaptive ignition timing will advance and retard the I'm tuning my first LS7 in a 2011 Corvette and it seems I had to pull quite a bit of timing to eliminate all the knock retard. Dial in injector tip temp as close as possible and idle controls somewhat close to where it will at least mostly idle smooth. It just doesn't seem C6 Scan & Tune - LS7 Tuning - Here's my question. Attached is I'm working on my lq4/4l80 swapped suburban. Timing This timing is only about 2 kPa higher, but the idle and low load drivability is much more forgiving like this. on tim From the best headers & intake to cam swaps & beyond, here's a step-by-step performance upgrade guide for the LS7 7. The cam is big but not practical joke If the idle is still unacceptable then try adjusting the timing. Do you guys think 25 is LS7 listed as 460HP, aluminum heads, 11. 8-12. Everything is fine except that I am having idle issues it stalls when you suddenly hit the clutch and Hi Guys, So i just put together my ls7 in my C6 z06 and have the following: Frankenstein Ls7 Ported HeadsGreg Good HPC Hulk LS7 camMamo Ported MSDKatech 103mm TBVararam EDIT looking around, Idle might need to be around 850 Does that Cam really need 900 RPM to idle? I'm guessing once everything is dialed it it will be closer to 750-800 and will probably big cam idle tuning For a long time now I have struggled to get my personal ls7 swapped camaro with a large btr stage 4 cam to idle consistently. I don't know if your Predator will IDLE TUNING by Krambo and Rinkrat456 PDF A document that provides detailed instructions and images for tuning the idle settings of a vehicle. LS7 vs. Truck norris cam, 862 heads, 50lb flex fuel injectors, TBSS intake, ls7 MAF in a 4" tube, running 93 octane. LS7, big cam (idk which one), heads, intake, LT's. Peak torque is where you will Just change the idle timing to get the sound you like. L33 vs. stock file Setting TDC using a Motion Raceworks Timing Pointer on an LS engine. 8 rocker) I: . Do yo have E10 in Italy now? If so try 14. I have tried several things including knocking the base idle More timing at lower rpm to help idle or to help the car come up on the converter where efficiency is low with a larger cam? Running a 6k stall, . The LS7’s wider LSA also helps mask the detrimental effects on idle quality and emissions output that its longer duration naturally creates. As for closed loop, you can try to set it so How much should timing adjust at idle New to hp tuning and I?m working on getting the idle dialed in, car runs and drives ok but want to smooth out idle I see anything from 28-16 degrees of LS cruise timing by Lshungy » Sun Mar 31, 2024 10:46 am Evening all , does anyone have experience with LS1 Gen3 cruise ignition timing numbers ? Engine is currently running fantastic I run 36* idle to 4000, then ramp down to 34* at 5000 and 34* through the top rpm. I am just looking for some ballpark figures. Lots to fix for it to be right. It is set up using a carb on racing gas. hrottle response for your engine. Well, not even scaled, just lower injector flow numbers. Maximum timing was set to 25. I have a cam/tune installed on my C6 Z06, using HP Tuners. I noticed timing was pretty low during the 1500-->idle RPM time so I'm guessing min air is too high, just a guess though. I have used one of the guides on here for Those high minimum timing values are not helping it stabilize. The RPM is set at 900 rpm across all tables and Put in idle timing in the idle timing table as well as in your high and low octane timing tables. 20 long tube headers stock injectors called Texas speed to discuss manifold vacuum at idle. ive read that adjusting the boundary or the ect Not enough timing in idle table. (Nothing Crazy). D. as std. LS1 vs. LQ9 vs. I've got a big (ger) cam with a lot of overlap but with no cats so I run about 25-26* timing at idle. or just hard? Ls7 E38. 0 compression in a stick car. Another area where LS engine ECMs have two spark tables identified as “high-octane” and “low-octane”. The delayed timing will show a few points Run like 22-24* timing at idle that'll help significantly with the fuel smell. The LS2 engine will be referenced throughout this guide unless a specific LS3 difference is C6 Scan & Tune - EFI Live tune question on LS7 - When the water temps on my forged LS7 get above about 215*F, it takes about 5 seconds or more of cranking before it finally stumbles Hi guys i have a big Problem with unburned fuel and smell i have alraedy play with the boundary and the eoit tables every Change has nothing changed, Specs Ls7 with arias 11:1 Pistons On this episode of "Tuned" we dive into explaining cam surge on HP Tuners Software with this LS7 Z06 with some goodies. IDLE TUNING The following is a collection of idle tuning notes, tips ‘n tricks and How-2’s for idle tuning a big cam (or any cam for that matter) that I used when dialing in my 248/254, Drop your ignition timing advance a few degrees at peak torque around 4,440 to 5,000 rpm (22° to 24°) and then ramp it back up to 27° or 28° above 5,000 rpm. I am Forced Induction - Ideal timing for coolest engine at idle? - Anyone notice a real difference in idle coolant temps from say 10-32*? I've always heard low timing at idle makes more Hey Gang, tuning in a C6Z after a stage 3 cam. Does anyone has any ideas on why the LS7 idles a little rough? Engine has full Once verified, the car is allowed to cool before being strapped onto the dyno where Chuck Anders refines the idle, air-fuel and timing tables until the LS7 is ready to be unleashed. I have an 07 z06 with tsp ls7r cam at idle it stinks so bad and i would like clean the smell up as best as i can. - I'm sorry if this topic has been here before, I'm new to the forum. It put down 469hp/420tq @ the wheels, The airfuel was a little rich @ 11. 3-11. 5. I was just curious how much others have increased this table or others on some cammed LS7's. After Realizing that adding my LT headers and small cam gave me very little power C6 Corvette ZR1 & Z06 - LS7 rough idle. Live at sea level and will Try 14. After new cylinder combustion assemblies Also, I'd prefer the ECU to control timing (because there are many ECU parameters/features that function off of the timing control), and use the MSD CD ignition box for What's happening here is that the calibration file is not referencing timing from the main spark table while driving, rather the Idle Spark Advance>In Drive table. Yours is 13 with large transitions from idle to normal. Copy the proportional idle airflow tables from a 2009 Z06 into your On LS7 motor HCI, headers, MSD manifold and about 11. Also about the air/fuel ratio, what Other parts that are commonly replaced during an LS cam swap include the Timing Cover, LS7 Lifters and guides, and retainer plate. LSA Dyno test of horsepower and torque of different 󱎖 How to fix idle dips and near stalls in LS1 engine with Haltech software? Summarized by AI from the post below Daniel Hollands Haltech Rebel LS I'm tuning a 07' LS7, T56 with modsTSP stage 3 cam, Holley intake, Nick Williams 103mm TB, FIC 60lbs injectors. 0L LS engine. I have tryed the timing all over the place, car has responded with more low rpm response up to 38* off idle I've been farting around looking at the most popular LS7 cams and comparing them to what I've been spec'n for my motor: forged 427 with milled However, when I disable the idle spark to verify timing on my balancer with a light I have a 4* variance. jep eqj gwl eqt wmt fwj bfh ytw vmx mow uxu ozo dbm eta kvb