Throttle response on 6.2...

[WendysOrBust]

In truth no one here can say for fact that GM can see flashes, or flash counters. We've heard they can, and we know there are different methods to do this, but no one here knows exactly how and what. Diablosport claims they employ GM software engineers to prove their custom tunes cannot be seen after return to stock tune.

Really?

 

http://www.corvetteforum.com/forums/c7-tech-performance/3397328-can-gm-detect-aftermarket-tunes.html#post1585795869

 

http://www.grrrr8.net/showthread.php?t=13784&p=195665&viewfull=1#post195665

 

There is a service bulletin that GM put which requires a technician to send a clear, digital photograph of the vehicles calibration ID in order to fulfill a warranty claim on an engine or transmission. Any aftermarket tune will not match the OE calibration ID.

[Sooperdave]

Funny, I was actually completely opposite when I test drove the 3.5L EB. I had my mind set on buying an F-150 FX2 EB CC til I drove it. Completely disappointed with the throttle. Unless it was in the boost, it was a non-responsive basic V6. I hated it. Put your foot down and it was nice though! I decided to go with the 6.2L after some reviews on this board. At the time they were very scarce. I couldn't even find one to drive. I took the chance and ordered my truck exactly as I wanted. I'm so thankful with my decision! After waiting 7 weeks it arrived and I got my first test drive. I was blown away! I find it's very responsive although part throttle at low speeds is a little goofy or spongy but it's a complete blast to drive! And to hear a deep V8 sound at crank, is sweet music!

[SoonerDPT]

"Mike@DiabloSport

Supporting Vendor

My Corvette Photos

Member Since: Oct 2009

Location: SoFla

"Not all flash processes will affect the CVN. Flashing with one of our tools leaves no trace in the CVN counter. We've sold 1000s of tuners to customers with CVN equipped e38, e67 and e78 PCMs and never, ever, had a reported issue, since there is nothing for anyone to see.

I agree on the 'too many blanket statements' comment "

 

Do they provide any kind of guarantee with this??

[Isriam]

Really?

 

http://www.corvetteforum.com/forums/c7-tech-performance/3397328-can-gm-detect-aftermarket-tunes.html#post1585795869

 

http://www.grrrr8.net/showthread.php?t=13784&p=195665&viewfull=1#post195665

 

There is a service bulletin that GM put which requires a technician to send a clear, digital photograph of the vehicles calibration ID in order to fulfill a warranty claim on an engine or transmission. Any aftermarket tune will not match the OE calibration ID.

 

I read those threads, and again there is no proof that GM can see the CVN changed, or a flash counter, or denied warranty based on a claim after a ECM mod. We've all seen the bulletin about pulling a CVN counter before engine replacement, but again no proof of what they are actually looking for or can see.

 

Threads like this are all hearsay and its my word against yours until someone like GM posts actual proof or a screen shot that they see flash counters, CVN changes, or other methods to deny warranty claims.

 

Diablosport stands behind their claim that GM cannot see your tune. I believe they reset or do not change the CVN counter. If that is all GM cares about, then no they cannot see your tune unless you do not remove it before service/warranty. If GM looks at flash counters, they could check your service history and compare the amount of flashes to see your ECM has been flashed more than service required.

 

Again, we know these things are methods that can be used, but we do not know the exact method and therefore it has not been proven how GM can void your warranty if you remove your tune prior to warranty work.

[Isriam]

 

"Mike@DiabloSport

Supporting Vendor

 

My Corvette Photos

Member Since: Oct 2009

Location: SoFla

"Not all flash processes will affect the CVN. Flashing with one of our tools leaves no trace in the CVN counter. We've sold 1000s of tuners to customers with CVN equipped e38, e67 and e78 PCMs and never, ever, had a reported issue, since there is nothing for anyone to see.

 

I agree on the 'too many blanket statements' comment "

 

Do they provide any kind of guarantee with this??

 

 

Tuner companies cannot provide warrantys because anytime a manufacturer denys a claim, they would be on the hook to cover it. I wouldn't warranty a vehicle if I sold tuners.

[redwngr]

If Diablosport (or whoever) is correct then all they need to do is supply a written warranty that says they will provide replacement warranty if GM denies powertrain warranty.

 

Until they are willing to do this it is just so much "I heard it on the internet it must be true BS". Being forked by them to sell their product. The way it is today it is not skin off their %#& if you are denied powertrain warranty.

[CoachRiddla]

I thought i was somewhat crazy (ok i am) but I do noticed that it takes some pedal to get the truck moving when taking off a light or stop. I thought it was just (some time to get used to it) since its a new truck. Mine is a 5.3

[WendysOrBust]

Unfortunately this is one of those things to where there is allot of conflicting information. When I chose to tune my truck I went into the mindset that something MIGHT happen, and it wouldn't be covered under warranty. If something does happen I'm gonna re-flash to the OE tune and cross my fingers. But I can't get a tune and expect everything will be fine an dandy with my warranty. Things don't work like that.

[ChrisNJ]

hmmmmmmm, I am surprised at complaints on the new 6.2 throttle response. I've owned almost every truck V8 GM has made since the 90's, and while I very much disliked the throttle response in the '07-'13 6.2's, this '14 6.2-6sp version is great. I can easily compare it to my old '02 and '05 8.1-4sp-4.10 trucks. The throttle throw is longer for sure, but just push a little more and she rocks like I expect 400+HP too. She even downshifts better than my last 3 trucks, easily, when you expect it too. She even holds gears way longer than any previous version, and every gear will hold it as long and sometimes longer than I expect. maybe I got a good one? I love it just the way it is, and that's saying something from this picky-ass engineer.

[CounterMeasure]

I think part of the problem with expectations of 420hp is the fact the only option for gearing is 3.23. With that, it doesn't feel as torque-y as one would think. If I could have had a 3.42, I would have put that in the order. If you don't care about every last MPG, no sense having such low gear ratio if you are speed limited to 99mph anyway.

[KARNUT]

I think most dealers put 87 gas in their 6.2s, which would explain slower response. I had it in my 5.3, I only run E85 or mid grade gas when I can't get E 85. As for a tune I only tune the tranny and eliminate the V4 with my Hypertech tune.

 

 

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[SoonerDPT]

hmmmmmmm, I am surprised at complaints on the new 6.2 throttle response. I've owned almost every truck V8 GM has made since the 90's, and while I very much disliked the throttle response in the '07-'13 6.2's, this '14 6.2-6sp version is great. I can easily compare it to my old '02 and '05 8.1-4sp-4.10 trucks. The throttle throw is longer for sure, but just push a little more and she rocks like I expect 400+HP too. She even downshifts better than my last 3 trucks, easily, when you expect it too. She even holds gears way longer than any previous version, and every gear will hold it as long and sometimes longer than I expect. maybe I got a good one? I love it just the way it is, and that's saying something from this picky-ass engineer.

It may be as someone mentioned, the 3.23. I was just surprised, because I was driving my '03 Avalanche with the 5.3 and 3.73 gears. I went and drove a new 3.5 Ecoboost and it felt like a torque monster. Then went and drove the 6.3 Denali. It was just the initial throttle response that seemed very weak, even compared to my Avalanche, and much less than the Ecoboost.

[BlackZ71Silverado]

A 6.3L Denali? Was unaware of that powerpland, you sure it wasn't a 6.2L???

 

 

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[Stoddard]

If you only want improved throttle response and not warry about warranty, pick up a sprint booster. They have settings so you can adjust the sensitivity. It does not by any means give more power, but its a reliable way to adjust responsiveness by tricking the ECM your pushing the throttle harder. Its also easy amd fast to install, and is undetectable. Its not for everyone as for twice the price you get the response and tune with more power. But it doesn't void the warranty.

 

I too disliked the throttle response of my 6.2 8spd but have gotten used to it. I think gm tuned it like this to help us get better mpg by not throtling so hard. (old mechanics used to push people seats forward one inch after a tune up so the throttle felt more responsive haha)

[Stoddard]

It may be as someone mentioned, the 3.23. I was just surprised, because I was driving my '03 Avalanche with the 5.3 and 3.73 gears. I went and drove a new 3.5 Ecoboost and it felt like a torque monster. Then went and drove the 6.3 Denali. It was just the initial throttle response that seemed very weak, even compared to my Avalanche, and much less than the Ecoboost.

You have to remember the ecoboost is turboed. When diesels hit boost their torque monsters too. I really like how much raw n/a torque my 6.2 has off the line especially compared gen 3/4 5.3's