mrmercedes

Performance guys. I'm a dealer and sell a lot of Corvettes. I have sold a ton of Z06's. Its a very fast Corvette however you must have the rpm's over 4,500 to get it to really get up a go. After 4,500 rpm's it turns into a animal. I just sold a good customer of mine a 2013 Corvette 427 Convertible and he said he wants to look into a Tune. Whats the cheapest and fastest way to get this 427 to rev faster? Will you really notice a diffrance in a tune without bolt on parts. Sometimes its hard to feel a difference in a extra 10-hp when the car has 505hp. Any advice? They say the car does the 1/4 in 11.8 to 12.00. Will a tune make this car a 11.5 with the same driver that does the 11.8 with the right tune without bolt on parts? Please note this 2013 427 Corvette Convertible is a 3,000 car and 100% stock.

RamAir972003

With a good tune he will gain 25 hp to wheels but since you work for the dealer would you void how warranty on vehicle because of tune. Make sure you inform him on the consequences some dealers frown on that....

Dano523

As stated, the tune will void the warranty.

As for the gains with a tune, it not so much in the HP gain, but instead, the de-hobbling of the TM (torque management is holding power back from reaching the ground to save the drive line from careless drivers instead).

With the engine now free to put all its power down to the ground, its a night and day difference.

Unreal

Yes it is very noticeable with a good tune. Depending on where you are, I would either take it to a local shop or look at mail order options. Hard to recommend without knowing where you are.

mrmercedes

It almost fells if you don't go all out with the z06 and get it over 4,500 rpm's its feels like a GS. Once over 4,500 it pulls real hard. 1,500-4,500 rpm's seems slow in the rev.

mrmercedes

Well i had the Diablo Tune installed. The car is a animal, a total BEAST. The 427 revs so much faster and pulls a lot harder. Very impressive. It took about 6 minutes, it was almost to easy like a 2 year old can install this tune. Honesty If anyone does not want to spend big money getting into the motor or do other bolt ons this is the way to get instant results without spending big money. As for warranty there is really no reason for a dealer to look into this and if they did who says all Corvettes are set the same from factory, this is why some stock Corvettes run stronger then other like in the case with mine. Anything can happen however its not likely they will find this out without having a real good reason to look. With the Diablo Tune i was told u can put it back to the way it was in less time then it took to install the tune. Mike at Diablo is the man. Highly recommended !!!!!!!!!!!!!!

Dano523

ECM is going to show a change date to it, and if those change dates (you flashing in the tune, then flashing it back to stock with the stock file to take it back for warranty work) does not have a GM ticket to back up GM flashing the ECM, they are going to void the warranty.

Trust me, the first thing GM is going to do on warranty work is plug into the obdII port to trouble shoot the system, which gives them full access to the ECM to check flash dates/changes that where made to the base line programing.