C7/Z06 Man

YES! If you use HP tuner, etc.

NO! If you use DiabloSport , see my above post along with that other guy's posts mention in my headline.

Dcasole

I agree .. if I use a Diablo I can say with a 100 % certainty that it cannot be detected

Let's just say ... I have a friend .......

Dave

Foosh

I am very skeptical.

Avanti

All in all, just wait until out of warranty and do ANYthing you want!

Foosh

That certainly works, as does willingly surrendering your powertrain warranty. The problem is a lot of folks have done this cluelessly over the years.

Dcasole

You are entitled to your opinion but I can tell you that with 100% certainty that diablo does not alter the CVN file which is the file that is used to determine the number of times a ECM have been updated. This topic comes up at least once a year ...

Guys they just dont just sell these things for Corvettes , it's all GM , Ford and Mopar and you dont think that with as many of these things that they sell if the tune was detectable once restored to OEM tune and a warranty claim was denied , you would not read about it all over the internet.... Do a search , see how many you find ..... . I think I have found one where the customer actually told the dealer that he tunes it ...

Dave

Foosh

Diablo used to claim it was undetectable, but after perusing their website over the last half-hour, they no longer make such claims. You don't read about many warranty denials because you don't read about many engine failures these days either. Those who are really serious about adding big HP do tunes and also do a lot of other mods, with the full understanding they've given up their powertrain warranties. They don't even try to take their cars back after melting an engine down.

Nothing wrong with that, other than violating federal emissions regulations, as long as you fully understand the implications of what you've done. Diablo does clearly state, their tuning products are "not for street use."

It's not about telling your dealer, they generally don't care, but when an engine fails, they are required by GM to do certain forensics before GM will approve a warranty claim, and GM will on occasion want the PCM/ECU for analysis, especially in the case of engine failure. Tunes may not be detected at the dealer level, but they can always be found by the manufacturer.

Dcasole

Foosh , I am not out to debate but would like to know where do you get the data to back the statement that there are not that many engine related failures...... just look at how many lifter failures , broken. Valve springs , rod failures and other engine failures right here on our forums ...let alone the Camaro forums etc .... there is no doubt in my mind that the DI motors are not as robust as the LS motors.. I personaly know at least 5 people who have had stock motors experienced catastrophic failure ....

GM does require the CVN file ...but if you tell the dealer its tuned... they may or may not even consider sending the CVN to GM for approval..

Dave

C7/Z06 Man

I was too at first after all it seems to good to be true.

But now I have no doubts in DiabloSports claims.

DWillys

If Diablo specifically states in writing that their tune is undetectable by GM and that if detected Diablo will pay all denied by GM costs you're golden. Otherwise .... buyer beware

Foosh

Diablo doesn't claim it's undetectable on their website.

Dcasole

https://www.corvetteforum.com/forums...nty-block.html

Recent Thread ......Mike from Diablo weighs in ...

Dave

Oh4GTO

Foosh is an expert on ZPs and apparently now on tuning.

C7/Z06 Man

That may be true (I don't know, I have not been there for a long time) so let me change my statement in regards to DS: I know of a case or two where the dealer sent GM what they required to investigate the PCM for tunes, etc. and GM found everything was fine. You make the 'choice' to believe or not. Like I said I found it hard to believe too, but no more.

2K14C7

I guess I’ll weigh in on this debate. My issue is the owners that want to modify their cars via a tune to increase HP and or remove or modify safeguards that have been programmed to help protect the drivetrain. But they don’t want GM to find out about it in case there is a warranty claim.

Obviously its it’s a money thing. Why pay for a repair if GM will. To me it seems dishonest, deceitful and just wrong. If you tune your car that’s fine but I don’t get having GM foot the bill.

Dcasole

So I agree with you 100% but I have seen cases where there was a catastrophic failure that had absolutely nothing to do with a tune such as a lifter failure or valve spring break which there are may of these reports and GM refused to honor the claim . One was a guy who bought the vette from a dealer as a certified preowned.... Now that is just not right

Put a blower on the car or a cam .. you are on your own but tell me how a ported manifold or a CAI intake could cause a mechanical failure or cause a valve spring to break ... that is just not right ...

Dave

Jack Be Quick Racing

What this is the bizzilinth time for this round and round on Diablo and tune tracking? Prove that there has been one detected or turned down for warranty specifically because of a Diablo tune being removed. Many (many) have proven that the tune has been on and off without detection. Where is the proof that one has been an issue - corvette, camaro, mustang.... over the last 10+ years or within the last 3 months?? Not chest thumping "I know" or I know a guy who knows a guy who used to be a tech... but actual proof.

HP Tune / others - different story. We all know it's detectable and you should know that going into it.

Mike@DiabloSport

Why does this always carry so much debate?
if you don't believe it works as I have repeatedly said, then don't use it
If you want to be able to tune without the worry of losing your warranty for no other reason than the fact that you programmed the pcm, the i3 or T2 is for you.

7thgeneration

The only tune I would be interested in is the one that gets rid of the V-4 mode permanently.

GLOCK22357

Is Chevrolet really that tight about mods? Ford doesn't care, as long as a mod didn't obviously cause the failure, and you're not trying to rip the company off.