Back Pop on Rev Down? Tuner Men Advice Needed.

[DangerZL1]

Even if you knew which tables to make changes in, I'd just have an experienced tuner make the change. If you are going to loose your warranty with a tune, then you could have the tuner make some other changes at the same time to improve the performance of the car. You can purchase a hand held tuner and a tune from some of the forum vendors.

[Higgs Boson]

I agree, just have a tuner do a complete tune on your car and ask him to also deal with that sound. It isn't really part of a "normal" tune since it doesn't affect anything except that sound so you will have to ask specifically.

You can get a laptop program/cable but it's not worth it if you are only going to tune one (or two) cars.

[2012ZL1]

personally I don't like it either, but everyone, and I mean absolutely everyone else who has heard my car loves it (the burble). I don't know why.

[Devilfish]

Originally Posted by 2012ZL1

I respectfully disagree. It has to be proven that what you did caused the problem.

Actually once you've changed anything in the computer tune, you've taken it out of the OEM "safe" tune therefore the engine and any linked components are operating out of "safe" conditions. GM tunes for reliability and once you alter the computer you have removed reliability. As someone else said, even if by some outside chance you won in court, you would have spent 20x what the repair would have cost. Most of the time the tune won't be seen unless you need major engine or transmission work but it's your chance to take. Cliche, but you have to pay to play.

[Mr.R]

1. does it happen over 3000 rpm? that's where the flaps open...so drive below 3000rpm.
2. Do not lift your foot off the accelerator as quickly - it happens mostly when you take it off

I personally want to get more of the pops if I could but it's just a personal preference... I intentionally go at constant speed and then lift off quickly - especially when I need to "impress" someone. I managed to "impress" an old man yesterday: he shouted at me

[hognutz]

Originally Posted by SlingShot

Not all your statements are true. The ECM tune can and will void your drive train warranty. They don't have to prove anything other than the ECM has been reprogrammed. You warranty is a service contract between you and the manufacture, and if YOU break any terms of that contract the warranty can and will be void. The act everyone talks about, is there to protect consumers from manufacturers changing the terms of the contract after purchase. Also the use of aftermarket parts only applies to OEM spec parts use for repair replacements.

People always say this but I have had my cars repaired with tune on the car. I think it really depends on the dealership or people are making too many assumptions without having gone throught the actual process. my 08 corvette had second gear syncro go with a diablo tune installed dealer replaced the tranny.

I aways say just be honest with your service department. ask before you do anything. some dealerships sell accessories for profit and they are always more friendly to modified cars.

I mean on our ram I had a front coupling u-joint go out we are on 37's with edge Juice and the delearship fixed it under waranty.

If my rear diff went out because I had my car tuned to minimize popping on decel I would expect the dealer to repair that. To completely unrealated systems.

[SlingShot]

Originally Posted by hognutz

People always say this but I have had my cars repaired with tune on the car. I think it really depends on the dealership or people are making too many assumptions without having gone throught the actual process. my 08 corvette had second gear syncro go with a diablo tune installed dealer replaced the tranny.

I aways say just be honest with your service department. ask before you do anything. some dealerships sell accessories for profit and they are always more friendly to modified cars.

I mean on our ram I had a front coupling u-joint go out we are on 37's with edge Juice and the delearship fixed it under waranty.

If my rear diff went out because I had my car tuned to minimize popping on decel I would expect the dealer to repair that. To completely unrealated systems.

Things have changes a lot in the past few years. The ECM has a flash log that can be read. With all major repairs, the dealer has to get an authorization from GM for warranty work. They aren't concerned so much with little things like trim pieces, weather seals, sensors stuff like that. But I promise that anything major in the drive train like valves, rods, trans, rear end and the big stuff, the first thing they are going to do is look at the flash log. If there are any unauthorized flash updates, your going to be SOL ... Times have changed and it will be on the consumer's nutt to make the repairs. Hell look at the Dodge, you can't even tune them because the ECM is locked tight.

[CAM....ZL1]

Originally Posted by SlingShot

Things have changes a lot in the past few years. The ECM has a flash log that can be read. With all major repairs, the dealer has to get an authorization from GM for warranty work. They aren't concerned so much with little things like trim pieces, weather seals, sensors stuff like that. But I promise that anything major in the drive train like valves, rods, trans, rear end and the big stuff, the first thing they are going to do is look at the flash log. If there are any unauthorized flash updates, your going to be SOL ... Times have changed and it will be on the consumer's nutt to make the repairs. Hell look at the Dodge, you can't even tune them because the ECM is locked tight.

I have a good friend that has a 2010 SRT8 Challenger with a CAI and a Tune, no problem accessing the ECM.

[Nvincent4708]

DFCO in the tune.

but.. If you want your warranty..don't touch it.

[SlingShot]

Originally Posted by CAM....ZL1

I have a good friend that has a 2010 SRT8 Challenger with a CAI and a Tune, no problem accessing the ECM.

The newer ones are the locked ones, the MY10 isn't the problem. The locked ECM's came with the 392's ...

[PistonsFan]

Lots of mis-information here.

It is fuel cut-off and overrun conditions (any condition that goes significantly lean). Gasoline engines generaly run rich at higher loads. The excess fuel gets stored on the catalyst. When you hit fuel cut-off or hit overrun (engine braking), the fuel (hydrocarbon) in the catalysts ignite rapidly due to high temperatures and excess oxygen.

If you don't like it, disable fuel cut-off as much as you can and avoid heavy engine braking. If you run stoich, there won't be oxygen to react in the exhaust.

[Mattzl1]

Another way to have the best of both worlds is to purchace a seperate PCM and have it tuned. Then if you need any warranty work reinstall the original PCM and all they can see is a battery disconnect. Thats what I did with my truck.

[KKreme15]

Originally Posted by Mattzl1

Another way to have the best of both worlds is to purchace a seperate PCM and have it tuned. Then if you need any warranty work reinstall the original PCM and all they can see is a battery disconnect. Thats what I did with my truck.

Details on this?

[Russell James]

Originally Posted by Mattzl1

Another way to have the best of both worlds is to purchace a seperate PCM and have it tuned. Then if you need any warranty work reinstall the original PCM and all they can see is a battery disconnect. Thats what I did with my truck.

Won't work that easy on the Camaro. The ECM on the Camaro stores the mileage. If you run without it in, it won't count up the new miles. Then when you put it back in, the miles in the ECM won't jive with the IP cluster.

Not that it can't be done, just not as easy as it use to be.