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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 03-23-2010, 09:52 AM   #1
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L99 Custom Tuning Results - Tune Only

We had not yet posted results of a tune only L99 and finally got around to getting the dyno charts up. Peak gains were 16rwhp and 23rwtq.

The most important numbers throughout the curve show gains of 25rwhp and 26rwtq. These power increases combined with our transmission tuning totally transform the car and make it much more enjoyable to drive. I also feel that if given some more dyno time we could increase the peak numbers to gains of 20+rwhp and some more torque up top.

With all of our custom tunes, each customer is entitled to FREE TUNES FOR LIFE. When we revise our tunes each customer is notified of these updates and sent out the new tune at no additional costs.


Notice the massive increases in torque and HP right from below 2000rpm. This is power you will feel and really make a difference. These gains are typical with our mail order tuning.
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Old 03-23-2010, 10:03 AM   #2
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Old 03-23-2010, 10:18 AM   #3
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What kind of results are you getting out of the LS3?
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Old 03-23-2010, 10:26 AM   #4
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Quote:
Originally Posted by victoryred1ss View Post
What kind of results are you getting out of the LS3?


We have a new improved tune, I will try and get the results up shortly. Peak gains are 10rwhp but more under the curve. We also offer improved fuel economy and throttle response.
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Old 03-23-2010, 12:16 PM   #5
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what adjustments were made tune-wise? Were cam phaser advance/retard adjustments made? Or just fuel/spark?
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Old 03-23-2010, 12:22 PM   #6
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For the L99, it looks like stock 300 HP/ 300 torque, and tuned 320 HP/ 320 torque.
The L99 should be at 325 HP stock/ 325 torque.
you need to do a fuse pull!!!
mine went from 305/300 to 327/342 with tune, then did fuse pull, probably at 350/360
now, soon to be back to dyno with vararam CAI to retest, hoping for 375/ 390.
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Old 03-23-2010, 05:18 PM   #7
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That has got to be one of the worst L99 dyno HP ratings i've seen. Even tuned it's below most untuned L99s.
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Old 03-24-2010, 12:25 AM   #8
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Originally Posted by 1camaro70 View Post
For the L99, it looks like stock 300 HP/ 300 torque, and tuned 320 HP/ 320 torque.
The L99 should be at 325 HP stock/ 325 torque.
you need to do a fuse pull!!!
mine went from 305/300 to 327/342 with tune, then did fuse pull, probably at 350/360
now, soon to be back to dyno with vararam CAI to retest, hoping for 375/ 390.
I also gained about 20 peak hp and about 30 hp in midrange after a dyno tune. Dynos read differently, you just want to look at the gains. Also, I hope you're not expecting to make another 20 hp doing a fuse pull after a dyno tune. Not going to happen. I bet 340 to 345 with the VR unit, sae.

Last edited by NHSS; 03-24-2010 at 12:41 AM.
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Old 03-24-2010, 07:07 AM   #9
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All dyno's read differently. We have an EDDY CURRENT loaded dyno unlike an inertia only dynojet which most use thus it reads MUCH lower. The gains are what counts

In our tune we adjust fueling, spark, VVT, transmission and other parameters. We mostly remap the entire ECU
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Old 03-24-2010, 07:44 AM   #10
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the seat of the pants dyno felt MORE change after the fuse pull, so if stock L99 is 325/325 on high octane table and mine was 305/300 on low octane table I noticed a HUGE difference in power gain, you must take my word on it, no one can run to the dyno after every change, I am just trying to be informative, On my local dyno I saw 22HP and 42 torque on the low octane table, and was about to SELL it because it still felt SLOW, but do the fuse pull and It's a keeper, would not sell now.
If you read all the threads on dyno tests you know that each dyno seams to read differently, so if Meister does another modification on same car and same dyno, we get a good reading of the effect of the modification, MY POINT was IN MY CASE the fuse pull made a WORLD of difference, and Meister should check that car, do the pull and re-dyno, just to confirm if it needed to get on high octane table, then we all know that his dyno just reads low compared to averages of L99's on this site that are 325/325 verses his dyno at 300/300.
And I LIKE lifetime offer for tune updates.

Last edited by 1camaro70; 05-05-2010 at 09:30 AM.
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Old 03-24-2010, 02:48 PM   #11
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Quote:
Originally Posted by 1camaro70 View Post
I will retest on same dyno once the Vararam is installed and the computer resets itself (100miles) temps outside will be different, humidity will be different, even though I gained 22 HP and 42 torque with tune, the seat of the pants dyno felt MORE change after the fuse pull, so if stock L99 is 325/325 on high octane table and mine was 305/300 on low octane table and at 327/342 after tune I noticed a HUGE difference in power gain, you must take my word on it, no one can run to the dyno after every change, I am just trying to be informative, On my local dyno I saw 22HP and 42 torque on the low octane table, and was about to SELL it because it still felt SLOW, but do the fuse pull and It's a keeper, would not sell now.
If you read all the threads on dyno tests you know that each dyno seams to read differently, so if Meister does another modification on same car and same dyno, we get a good reading of the effect of the modification, MY POINT was IN MY CASE the fuse pull made a WORLD of difference, and Meister should check that car, do the pull and re-dyno, just to confirm if it needed to get on high octane table, then we all know that his dyno just reads low compared to averages of L99's on this site that are 325/325 verses his dyno at 300/300.
And I LIKE lifetime offer for tune updates.
We already know our dyno reads low. Our shop care made 470 on our machine and 497 on a dynojet. I have been using a Mustang Dyno for 7 years so this is not something new to me.

The fuse pull simply clears the keep alive memory. The car has run premium fuel its entire life and we did a before/after from how the car rolled into the shop. If it has run like this its whole life and brought into the shop then this is real world testing of actual gain. Are you going to go driving the car on the street in stock trim and start pulling fuses?
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Old 03-24-2010, 03:20 PM   #12
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Are you going to go driving the car on the street in stock trim and start pulling fuses?

YES, if it went to the low octane table, it will not go back to high octane table by itself,
check out the sticky with 50+ pages of discussion.

The only low octane in mine was from dealer fillup when new, but no one knew about the low/ high octane problem back then, and after 3500 miles of driving it did not reset.

If you can only get 220HP with your tune, camaro5 members should stay away.

Amazing how you comment about a LOW HP WITH TUNE, and bring up a possible cause, well known in camaro5, as it started here, and people attack you.

Last edited by 1camaro70; 05-05-2010 at 09:29 AM.
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Old 03-24-2010, 04:08 PM   #13
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If a customer comes in for a supercharger install and has 87 octane in the tank are you wanting us to drain it, put in 93 octane and pull the fuse to reset the cam and dyno it because the supercharger setup will be tuned with 93 octane?

I have done like 4 L99's all stock and they all make within 10hp of each other. I will put our tunes up against any tune any day of the week.

There is a knock learn factor so overtime the PCM will learn the new values and end up being close to the high octane table. It will not be stuck on the low octane table forever. The Camaro is a premium fuel car and should not come with 87 from the dealer anyway. The ECM will end up using the high octane table or 99% of it overtime.

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Old 03-24-2010, 06:40 PM   #14
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THE COMPUTER WILL NOT RESET ITSELF, form low octane table to high octane table.

Thousands of camaro5 members have read about it, Scott found out from GM engineers.

unless new updates to the computer have been made, which there is no evidence of, the V8, L99 computer will REMAIN on low octane table FOREVER without fuse pull.

How do work on L99 tunes without knowing that?

the guy who comes in wanting a supercharger and is using 87 octane, might as well have gotten the V6.
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Old 03-24-2010, 07:02 PM   #15
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Originally Posted by 1camaro70 View Post
THE COMPUTER WILL NOT RESET ITSELF, form low octane table to high octane table.

Thousands of camaro5 members have read about it, Scott found out from GM engineers.

unless new updates to the computer have been made, which there is no evidence of, the V8, L99 computer will REMAIN on low octane table FOREVER without fuse pull.

How do work on L99 tunes without knowing that?

the guy who comes in wanting a supercharger and is using 87 octane, might as well have gotten the V6.
Umm... I think newer ones will. They've resolved that issue.
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Old 03-24-2010, 07:58 PM   #16
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Umm... I think newer ones will. They've resolved that issue.

then why do people keep posting that they are doing fuse pull everyday? on this site?
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Old 03-25-2010, 09:17 AM   #17
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There is a knock learn function that goes from 0%-100% and overtime the car will make more power as it learns and goes towards 100% of the high octane table. The car should never have anything less than 91 in it (and if you are in Florida our premium fuel is 93 octane). If for whatever reason the car had 87 in it and the 93 was put in it would eventually run off the entire high octane table or close to it. The car in question has been run on 93 octane from day one and had over 11,000 miles of 93 octane in it.

Not all GM engineers know everything. I have talked to Ford and GM engineers, even calibrators, who have been mistaken.

Next L99 we get in here I will do it for you just to make you happy if you really want.
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Old 03-25-2010, 11:56 AM   #18
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Umm... I think newer ones will. They've resolved that issue.

then why do people keep posting that they are doing fuse pull everyday? on this site?


Mine drove like a bad out of Hell from Day 1 ( 1 month ago ) it had a little bit of a rough idle and I figured what the hell lets pull the fuses 3 hours later I put the fuses back in and WALA no more rough idle.

Perhaps some folks ( not me ) dont know if there car is slower or perfect so they are figuring they will just pull 2 fuses and go from there.
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Old 11-07-2010, 10:39 PM   #19
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I felt a little disapointed in my performance, but then spent half my life on this forum and discovered tons of threads and comments on the fuse pull. I did it at about 1500 miles and I can say without question, my car pulled much harder after the fuse mod. While on vacation I had to use 91 octane since it was all I could find. When I got home, I did the fuse pull again just to be sure. The process is so simple, it doesn't make sense not to do it. I have heard the fuse pull only works on the L99, but have no direct knowledge.
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Old 11-07-2010, 11:27 PM   #20
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Quote:
Originally Posted by Meister@Torq View Post
We had not yet posted results of a tune only L99 and finally got around to getting the dyno charts up. Peak gains were 16rwhp and 23rwtq.

The most important numbers throughout the curve show gains of 25rwhp and 26rwtq. These power increases combined with our transmission tuning totally transform the car and make it much more enjoyable to drive. I also feel that if given some more dyno time we could increase the peak numbers to gains of 20+rwhp and some more torque up top.

With all of our custom tunes, each customer is entitled to FREE TUNES FOR LIFE. When we revise our tunes each customer is notified of these updates and sent out the new tune at no additional costs.


Notice the massive increases in torque and HP right from below 2000rpm. This is power you will feel and really make a difference. These gains are typical with our mail order tuning.
Was some or all trans torque management taken out of the tune? and how much was taken out if yes?
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Old 11-09-2010, 01:09 AM   #21
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I was under the impression that any proper tune, custom or "canned", should copy the high octane fuel table over the low octane table, thereby FOREVER eliminating the need to pull fuses.

If this method of duplicating the high octane table works, why would any tuner not do that?
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Old 11-09-2010, 07:56 AM   #22
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The low #'s is the dyno they are ussing -thats it. We have the same dyno.(but it's adjusted closer to a dynojet)

Easiest way to tell if the car was in the low octain table is to log the first pull.
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Old 11-09-2010, 09:56 AM   #23
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Originally Posted by OBSSEST View Post
I was under the impression that any proper tune, custom or "canned", should copy the high octane fuel table over the low octane table, thereby FOREVER eliminating the need to pull fuses.

If this method of duplicating the high octane table works, why would any tuner not do that?
One reason is if you get some bad gas then you would not want to be running the higher spark.

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Old 02-03-2012, 12:41 PM   #24
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I know this is a rookie question but, fuse pull? Thanks for humoring me
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Old 02-03-2012, 06:00 PM   #25
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Quote:
Originally Posted by Slowhawk View Post
The low #'s is the dyno they are ussing -thats it. We have the same dyno.(but it's adjusted closer to a dynojet)

Easiest way to tell if the car was in the low octain table is to log the first pull.
Yeah,

What matters is what's considered "normal" for that particular dyno.

My car (full bolt ons) only made 352 rwhp and runs 12.1s in the 1/4 mile. While on the other hand I know guys running low 13s with 370 rwhp (L99s). Some dynos are quite generous while some others are very conservative.
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