1. You don't change the handling of the car by changing Driver Demand tables. I am glad you read the Owner's manual but it is not a tuning manual and assumptions should not be made about what recalibrating does and how it relates to other systems in the car.

2. No one is deleting anything from a tune. Terrible analogy and lends an example of your logic....outdated.

3. I didn't see anything about disconnecting on your referred pages.

4. What did you connect them to? I asked what cars have you personally calibrated, keys words "and tuned." Are you prepared to have an in depth discussion on the topic without referring to third party sources? Can you post your tune files and the changes you made and tell us why you made them?

5. Yes, you claim to quote only companies that sell parts packages, categorized by HP levels. None of these companies have posted anything about having no gains, in fact, the only public information (ie. not your claims) shows dyno proven gains. By the way, your PMs state that Katech and Lingenfelter told you there is precisely ZERO to be gained from a tune, now you say it's "a little." I mean, can we at least attempt accuracy?

6. Yes, that is precise.

 

Even in Track mode or in eco mode -- If the TC button is ON the TQ is always being limited- Turning the TC button OFF will allow Max TQ all the time----However this only happens at or near 100% throttle position---So your car may make max HP and TQ but only at 100% throttle position---To make your car "quicker" and ramp up faster thru the entire RPM range a tune will change those parameters so your eng can make Max power before it is simply at WOT !!--
This is No illusion if you've ever looked at an E92 tuning file of a DI engine--There are extreme throttle position delays and TQ delays in the mid-range---If you can make your car quicker thru the mid range--you will have a faster ET----Now if you are simply looking for MAX HP at 6400 RPM's on a dyno that is something else--But if you are looking to make your car "quicker" a tune can make a great increase in ET

 

I believe you wanted me to answer your questions, which I did, now you want to grade them so be it. You keep saying of all your tuning expertise, can you elaborate on that and all the tunes you have done and for whom. I’ve been on this forum for close to 15 years and never heard of you in the sections I visit. Your bio says nothing and what other Corvettes have you owned. I see you have a 2014 so you don’t have an A8 and probably don’t have the manual section I told you to read. Apparently you know far more that GM Engineering so maybe I should let you glory in moment. As far as accuracy I just figured you could equate 5hp on a 460hp source as zero impact. One other minor thing is that tire temp is also figured into the algorithm for active handling.

Curious on who publishes the tuning manual that you referenced I’m assuming it was you, care to share. Also are you the one on another thread saying the Z51 option is a waste?

 

no, you didn't answer my questions.....

I would never buy an automatic corvette but that doesn't mean I haven't tuned plenty of them....

I don't solicit business on this website so you will never "hear of me." I am a member here as an individual not as a vendor. I just like vettes, but that's not my only car either. I have tuned a few hundred cars since 2007/2008 and I never once said gm did anything wrong or profess to "know more than gm engineers."

however, I do know their hands are tied in many respects and mine are not, nor are yours if you know what to do.

my only problem with you is your lack of information, also known as ignorance, cloaked in "responsibility of preserving the gm engineer's lowest common denominator warranty and emissions guidelines" when all you really need to say is, "I don't really know what you guys are doing when recalibrating ECMs and TCMs but I am happy enough with my car as is" and just go about your business.

and no, I do not find value in a Z51 package at all but that doesn't mean there isn't value in it for someone else. do you want to argue about that too?

you go be you. no one else is.

edit: btw, my profile doesn't list my past cars because they are past cars....there are probably 70 of them, you want me to list them? no way, I can't even remember them in one sitting. I don't own them now so they don't go in a list of cars I own....neither do non corvettes on a corvette forum.

 

If you put the car in track mode, then race configuration (all nannies off) the slight lag in throttle response goes away.

 

To my understanding A tune could help the hesitation at lower RPM's.
Would you know if it's true or not?

 

true

 

I am not not sure if Sprint Booster makes a version for the C7 but it's a pretty amazing mod that takes away all throttle lag. It does not actually add any HP but the throttle response is controlled by a 3 button LED switch with three different modes. Off, Fast and Faster. I love it on my Benz and would buy one for my C7. On the Mercedes Forum they offered a "group buy". Highly recommend it. Takes about 20 minutes to install. Hope this helps.

 

Here's the website:
https://www.sprintboosterusa.com/p-3...rvette-c7.aspx

 

A new direction on the subject I think?
I notice audibly blipping the throttle from low to mid RPM that it has a clear hiccup before getting going. I noticed this personably time and time again and have said nothing about it. It reminds me specifically of the 4 barrel carbs of the 60's and 70's that pause and bog 1/2 a second before kicking in.

 

click here and go to page 24

what is the point in blipping the throttle at any point other than decelerating into a corner on the brakes and switching to a lower gear just before letting the clutch out?

friends don't let friends blip in park/neutral

 

Anyone here lose their factory warranty after tuning their engine to run properly? Surely, tuning an engine to run properly and having this void your factory warranty is not acceptable to me or anyone who has owned other sports cars that don't have built-in throttle lag.

Since my C7 has severe lag from a standing start and bogs down at low RPM's, could the dealer service department tune the engine to eliminate the lag? Like many other owners of competing sports cars that switched to C7's, I believed GM and the various magazine reviews "hype" prior to purchase, and this inherent defect was swept under the rug.

Does anyone know if tbe "tune" could be wiped from the memory in the ECU if the motor blows? In fact, if GM voids the warranty after a tune, aren't they admitting that the engine has weaknesses that would permit it to blow if the engine was tuned for highest performance? Please note that I'm not seeking more HP, it has plenty but is simply unresponsive. I drive a M7 and know how to drive, so that's not the issue since I've had no prior throttle lag issues with Porsches or even a 350Z I owned years ago. My first Vette, a 1964 with 327 c.i. motor running solid lifters and a Holley 850 CFM carb had "zero lag - Chevy knew how to build great engines. Evidently, smog rules are the problem, along with fuel economy.


Don't get me wrong, my goal is not drag racing as I do not enjoy tearing up engines at the strip. I just like driving responsive cars like my last Cayman S. I appreciate the C7's appearance and high HP, along with the guttural roar of the V-8 motor that my new C7 offers, but this throttle lag is seriously damping my enjoyment of driving.

Is there a tuner in the Orange County or Los Angeles area that knows how to correct this problem? Thanks in advance for your assistance.

 

have you been to the dealer to see if there is a problem with your car or are you expecting diagnosis and repair online? my car doesn't have "severe lag" nor does it "bog down" unless I punch it in 7th gear at 1200 rpms.....

or maybe you're just doing it wrong. how can we know? because you say "I know what I'm doing?"

 

Service manager said there is a slight spread in performance in all cars, not just Corvettes. After driving mine around the block, he admitted he had driven more responsive C7's but also lesser ones. He told me to enjoy the car and don't mess with it. He waffled a bit when queried about tuning it, said they had not done this on a C7 but didn't know if it would void the warranty as long as GM did the tune.

Then I found a thread about an aftermarket tuner called Trifecta who claim they can reprogram the ECU but then erase the mods if the car has to be repaired later. Obviously,this seems to be the ideal situation for the "borderline performance" that I'm experiencing. Has anone dealt with Trifecta? They claim their system will eliminate the throttle lag and will be invisible to GM code readers.

 

trifecta and Diablo both claim to remain undetectable and are both legitimate solutions. I haven't seen anyone post anywhere that a dealer detected one of their tunes.

 

If a little throttle lag is what is bothering you, investigate the sprintbooster suggestion I posted earlier. It's under 300 bucks, an easy install and does exactly what your looking for.
Good Luck and Enjoy!

 

I forgot to add...is an actual module that plugs directly into your electronics line off your gas pedal. Very easy to remove should you sell the car or need warranty service.

Here are some pictures of my Mercedes Install. Works great...

 

In the 14's there were a number of complaints with throttle response. The "blip" is an excellent way to experience the disconnect between the throttle pedal and the ECU. I had the problem (VIN 5933, manual trans) but it was greatly improved when I took the car in for other updates and one of them included an update for throttle response.

It is all about emissions. Any extra effort anyone has used to argue with a fellow forum member would be better spent directed at reining in an out of control EPA.

Those with the A8 need to study up on their transmission and it's learning curve. Once that is understood, then address the throttle if they still have a problem.

 

Doing this did not stop the delay in my M7.
Installed a Sprint Booster and no more delay.
Autocrossed yesterday & response was instant.

 

I have a SprintBooster and it totally illuminates all throttle lag. Cheap mod. Great results. Easy install.