[JSH]

Originally Posted by djctoto

Letting the results and data supplied to me speak for them self.

After spending approximately $15K with Patriot Motorsports USA to have them perform a numbers of modifications including tuning on my 2019 ZL1-1LE I witnessed a dyno run and was provided with the following screen shot as the only data. This was done with an Ethanol mix at E30.

No Actual Graph was provided and the peak torque value at 2865 rpm is suspect.
https://drive.google.com/file/d/1pMo...usp=drive_link

After the addition / installation of 2" ARH headers their 3" x-pipe / long system, the removal of cats. And adding a MAMO blueprinted throttle body I then had the car re-tuned, no other changes were made and received the following data:
https://drive.google.com/file/d/1cIH...usp=drive_link

Comparing the e30 results:
Patriot Motorsports Max HP 661 @ 4862 rpm Max Trg 753 @ 2865 rpm
New Dyno Results Max HP 654 @ 6227 rpm Max Trq 663 @ 3598 rpm
Delta Max HP -7 HP Max Trq -90

Again the data shows that the actual results from Patriot Motorsports that I received. Even with the differences from Dyno to Dyno how is it possible that my engine produced -90 ftlbs of torque to the wheels after the addition of ARH 2" Headers along with the removal of CATs and the addition of a 3" x-pipe and long system into the same stock suitcase muffler.

My only guess the screen shot provided by Patriot Motorsports is flawed somehow? Buyers beware is all I can offer.

Something's not right.

Looking at my past dynos, max torque was at 4080, 5400, 4522, 4400, and 4210,

I'm pretty sure everyone here would have expected all your numbers to improve somewhat.