Installing a tune
Thread Starter
Instructor
Joined: Sep 2013
Posts: 212
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Installing a tune
I have a diablo trinity tuner. Does anyone know if installing this tune on my C7 will interfere with my factory warranty or an aftermarket warranty once my factory warranty is expired? Obviously if the car had a tune on it I would return it to stock before going to the dealer. My question is would the dealer he able to tell that the car previously had a tune on it? I know the dealer cannot automatically void your warranty just because of a tune. By law they have to prove to the customer that the tune caused the problem which brought you to the dealer. However, that sounds like a huge legal headache that I would prefer not to deal with. Any input would be much appreciated. Thank you
Drifting
Joined: Jan 2005
Posts: 1,827
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From: Tucson Arizona
St. Jude Donor '08
Go to this site and do a "search" there for "Diablo", and you will have numerous different answers to your question. They will apply to your C7.
https://www.corvetteforum.com/forums...-and-tune-124/
https://www.corvetteforum.com/forums...-and-tune-124/
Last edited by jim2092; Oct 17, 2017 at 11:13 AM.
Team Owner
Joined: Jan 2007
Posts: 29,063
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From: cookeville tennessee
ttt
I had one on my c7 had to take it in for war work I put the stock tune back into the car. They never said nothing at all. Got it done under warr got back home put the tuner back onto the car.
Just put the stock tune back into the car before taking it in. Plus by what they say & I was told this one is the only tuner if putting it back to stock GM computer cant tell it. Robert
Just put the stock tune back into the car before taking it in. Plus by what they say & I was told this one is the only tuner if putting it back to stock GM computer cant tell it.
Robert
Safety Car
Joined: Apr 2010
Posts: 4,231
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From: Maryland
I had one on my c7 had to take it in for war work I put the stock tune back into the car. They never said nothing at all. Got it done under warr got back home put the tuner back onto the car.
Just put the stock tune back into the car before taking it in. Plus by what they say & I was told this one is the only tuner if putting it back to stock GM computer cant tell it. Robert
Just put the stock tune back into the car before taking it in. Plus by what they say & I was told this one is the only tuner if putting it back to stock GM computer cant tell it.
RobertAny time you take the car to the dealer for any type of service "always" return the tune to stock before you take it in.
Bill
Last edited by C7/Z06 Man; Oct 19, 2017 at 06:03 PM.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
No need to even send it to GM, you (well, the tech or dealer) can tell from looking at the screen whether the last dozen or so tunes were authorized GM or not.
I've never heard of GM actually trying to figure out -what- was changed in a tune, though they no doubt could if they wanted to... in a current tune.
I changed my tire size parameters when I installed drag radials. Poof! Warranty gone.. whoops!
I've never heard of GM actually trying to figure out -what- was changed in a tune, though they no doubt could if they wanted to... in a current tune.
I changed my tire size parameters when I installed drag radials. Poof! Warranty gone.. whoops!
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Safety Car
Joined: Apr 2010
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From: Maryland
From what little I "know" we will have to agree to disagree. 
PS: Did you use HP Tuners, etc.? vvvvv
PS: Did you use HP Tuners, etc.? vvvvv
No need to even send it to GM, you (well, the tech or dealer) can tell from looking at the screen whether the last dozen or so tunes were authorized GM or not.
I've never heard of GM actually trying to figure out -what- was changed in a tune, though they no doubt could if they wanted to... in a current tune.
I changed my tire size parameters when I installed drag radials. Poof! Warranty gone.. whoops!
I've never heard of GM actually trying to figure out -what- was changed in a tune, though they no doubt could if they wanted to... in a current tune.
I changed my tire size parameters when I installed drag radials. Poof! Warranty gone.. whoops!
Last edited by C7/Z06 Man; Oct 17, 2017 at 10:13 PM.
Thread Starter
Instructor
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Burning Brakes
Joined: May 2015
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From: Port Charlotte FL
The problem will be when something breaks. If you blow your engine or something else drive train related you will need to put stock tune back on. Tech can tell ECM was reset. He can tell how many miles driven since ECM reset. He can see readiness codes in ECM are still present since car is broken and you can’t drive car to remove readiness codes. At that point you are screwed.
Race Director
Joined: Oct 1999
Posts: 17,709
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From: Phila PA, Bonita Springs FL
NEVER seen or heard of 1 case where GM voided a warranty because the PCM had a higher flash count than what they thought it should be.
And I've been on corvetteforum for 18 yrs
And I've been on corvetteforum for 18 yrs
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
OK, but I don't know what we're disagreeing about. I used HPTuners but checked into Diablo first to see if it was any different, was told (in a roundabout way by their competitors) it was just as detectable. I have no idea what the reality is, only what I've been told, as I've never touched a Diablo.
Last edited by davepl; Oct 18, 2017 at 12:33 PM.
Safety Car
Joined: Apr 2010
Posts: 4,231
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From: Maryland
See Post #12 above.
OK, but I don't know what we're disagreeing about. I used HPTuners but checked into Diablo first to see if it was any different, was told (in a roundabout way by their competitors) it was just as detectable. I have no idea what the reality is, only what I've been told, as I've never touched a Diablo.
However, HP Tuners is a very good tuner, most likely the best on the market for tuning (my understanding) for a number of reasons. So if you are 'not' worried about keeping your warranty then HP is the way to go.
I have read a number of DS owner threads (they had no problems with warranty work and/or replacements) where an engine, a rearend and/or the transmission took a crap and most likely the "canned" or modified DS tune did not have a thing to do with bad engine lifters, etc. or an A8 trans that is not acting right or maybe the rear spider gears let go from wheel hop which does happen.
People have also used the DS tuners "just" for removing that annoying V8/V4 mode that has been known to mess up A8 C7 transmission torque converters.
Well with the HP tuner you would be "SH_T OUT OF LUCK" and the above things have happen with or without the OEM tune.
PS: DiabloSport tuners are very easy to use and hard to mess things up. Hell even non-tuners like me on these "computer controlled/programed cars" have very little trouble following their directions.
Last edited by C7/Z06 Man; Oct 19, 2017 at 02:24 AM.
Instructor
Joined: Sep 2017
Posts: 178
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From: Reno NV
https://www.corvetteforum.com/forums...just-blew.html
Post #74
Engine was taken apart today. A valve spring broke, dropping valve into piston.. they sent computer info to GM and discovered that previous owner had in fact tuned it. Was also told my powertrain warranty has been voided. I contacted chevy customer service and was told that a customer relations manager would review everything and contact me.
Gonna see what a few local shops would charge for crate motor install, may look into good set of Pistons also and a fresh tune. Or just factory crate motor with factory manifold and tune. Will see who offers what..
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
So, nothing to do with counts. The only thing I don't know is what happens if you age out a custom tune with a dozen factory tunes, but that's a pretty far edge case.
FWIW, in order for a GM dealership to replace a major engine assembly, they MUST provide GM a screenshot of the log. I've posted that policy and the paperwork previously.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Safety Car
Joined: Apr 2010
Posts: 4,231
Likes: 451
From: Maryland
No mention of DS by OP so why was this even posted.
News Flash: No mention of DS from the Original Poster in the thread below; most tuners from what I read on here use HP Tuning.
Well sir, here ya go.
https://www.corvetteforum.com/forums...just-blew.html
Post #74
Engine was taken apart today. A valve spring broke, dropping valve into piston.. they sent computer info to GM and discovered that previous owner had in fact tuned it. Was also told my powertrain warranty has been voided. I contacted chevy customer service and was told that a customer relations manager would review everything and contact me.
Gonna see what a few local shops would charge for crate motor install, may look into good set of Pistons also and a fresh tune. Or just factory crate motor with factory manifold and tune. Will see who offers what..
Well sir, here ya go.
https://www.corvetteforum.com/forums...just-blew.html
Post #74
Engine was taken apart today. A valve spring broke, dropping valve into piston.. they sent computer info to GM and discovered that previous owner had in fact tuned it. Was also told my powertrain warranty has been voided. I contacted chevy customer service and was told that a customer relations manager would review everything and contact me.
Gonna see what a few local shops would charge for crate motor install, may look into good set of Pistons also and a fresh tune. Or just factory crate motor with factory manifold and tune. Will see who offers what..
Last edited by C7/Z06 Man; Oct 19, 2017 at 05:41 PM.