[Wes12]

Originally Posted by s346k

the car isn't picking up much on the back half, 21 mph. were all of the runs consistent in terms of 1/8-1/4 mph? id still consider 117-118 mph slow for an a8 car with headers and ethanol this time of year.

who tuned the car? any bone stock numbers?

No bone stock numbers. and a shop named MCR tuning in Kentucky

[Wes12]

Originally Posted by FarmerFran

Your MPH seems low to me for that ET. Are you sure you are not letting off at the end?

positive im not thats why im so confused

[Doc Oc]

Originally Posted by Wes12

i dont. it was a dyno tune says i put down 441 hp amd 461 tq

That's right where you should be but without a baseline it's tough to know for sure. You completely disabled the nannies right?

I'd invest in HP tuners, make some runs and post the logs. Sounds like it's pulling timing.

[Wes12]

Originally Posted by Doc Oc

That's right where you should be but without a baseline it's tough to know for sure. You completely disabled the nannies right?

I'd invest in HP tuners, make some runs and post the logs. Sounds like it's pulling timing.

yep disabled all of it turned off ac

[Fraxum]

Originally Posted by Wes12

so im a A8 car with headers and e85. the DA wasn't bad this day and im also on hoosier drag radials best run i could get is a 11.9 at 113 mph my 60 foot was a 1.7 I've seen a lot of people run low 11s just cant figure it out maybe its my tune?

Man that mph is really low. My M6 LT1 almost stock (Rotofab and tires) is running 116 with 12.10 ETs with a high 1.8 60'.

Are you letting up before the Traps? I've done that.....

[Wes12]

Originally Posted by Fraxum

Man that mph is really low. My M6 LT1 almost stock (Rotofab and tires) is running 116 with 12.10 ETs with a high 1.8 60'.

Are you letting up before the Traps? I've done that.....

no i make sure to stay on it past them idk whats going on but it sucks

[FarmerFran]

Originally Posted by Wes12

positive im not thats why im so confused

It is like it is just falling off up top. At 11.9 you should be a least 115. My A4 GTO would trap 115+ on an 11.9 run.

It has been years since I have been in the racing game so maybe I am wrong, I just know what I used to run and what I used to see. What gear are you in at the end of the track? Is it shifting right at the end maybe?

[Wes12]

Originally Posted by FarmerFran

It is like it is just falling off up top. At 11.9 you should be a least 115. My A4 GTO would trap 115+ on an 11.9 run.

It has been years since I have been in the racing game so maybe I am wrong, I just know what I used to run and what I used to see. What gear are you in at the end of the track? Is it shifting right at the end maybe?

yeah it shift right before 1/4 mile also running a 26 inch tire

[laynlo15]

I agree with want1ss, my 16 with just CAI and drag pack went 11.71@119. Your mph is lower then most stock SS with A8. Something is wrong with the tune. Last TNT I was at I met a couple SS Camaro guys with E85, tune, CAI and drag radials. They were both running 11.60s@121which is probably pretty close. They were running 11.80s till I gave them some tips on launching. They were both trying to leave from 1500 to 2000 and most have found out that right off idle has been best for the A8s.

[wnta1ss]

Originally Posted by Wes12

no tcm tune and im about to order hp tuners and try to figure it out myself is tuning pretty hard on these cars?

Ok, if your TCM is still locked, then low-11s could be a bit much to expect with your mods, but, mid-11s could have still been seen in my opinion with E85 tune, headers, and drag tires. I say that because I went 11.6@118 when my TCM was still locked, and I would expect your car (with headers) to be faster than mine was at that time (with an all-stock exhaust).

Tuning these Gen V computers can be difficult honestly, because it's a torque-based computer, meaning that it's not just spark timing and fuel stuff. To be able to tune the TCM, you'd first need to remove the TCM (it's underneath the passenger-side headlight, on the frame rail) and send it to HP Tuners to be unlocked. Then when it comes back, you'd need 4 credits from HPT to license it, and also 4 more credits to license your 2017 ECM, if you wanted to tune that yourself as well.

[laynlo15]

Boy HP Tuners really has control of the TCM don't they. Glad I had a 16 SS and now with my 16 C7 saved a bunch of money just in credits. Luckily I've learned to tune from Mike Sitar (toohighpsi) has really helped me understand what I'm looking at in the logs and tuning abilities are still kind of limited but from where I was 4 years ago when I first got my HP Tuners Pro and now MPvi2 its like night and day. Anyone that buys a car and plans on modding it needs to own the MPvi2 just to be able to log for whom ever is tuning your car if you can't.

[FlukeSS]

Originally Posted by Wes12

yeah guy up at the same track is running a 11.4 with same mods but he also has the a10

To my knowledge the A10's are faster than the A8's. More pull.

Seen plenty of side/side rolling races where the A10 just out pulls the A8's.

Its not huge, but it is noticeable.

[gtfoxy]

A log showing throttle angle, among other things, would be very informative. If it’s closing the throttle due to torque management you’d see it.

[KingLT1]

We're there any other Camaros at the track to compare? For example if there was a stock SS at the same track running 12.2 @ 116 or something along those lines then yes you have some tuning related issues.