Dyno day

3.8RS Side muffler delete oem center
3.8RS Side muffler delete M&M center --> added side mufflers and sharky center
3.8RS headers, no cats M&M side muffler delete
4.0RS OEM--> M&M side muffler delete

 

Here we go:

Last year, so different conditions, same dyno it made 420HP

3.8RS Side muffler delete oem center

 

3.8RS with side muffler delete made 435HP

 

4.0 made 474HP with side muffler delete

 

Sorry cant upload pictures and Dyno charts, just click on my signature below.
All the way at the botom for the 4.0 and the 3.8's charts are next to the canadian flag;-) Sold the car to Canada!

 

I'll help you here:

Trakcar 4.0 comparison between stock exhaust and M&M exhaust


GT3 RS 3.8 comparison between stock with a center bypass and M&M exhaust


Here is my car with M&M headers and exhaust - GT3RS 3.8


The gains are massive in any configuration, all pulls were made same day, with just a few minutes of each other so the temps are pretty even.

A few pics ....

 

I'm editing the videos, and will post as soon as it's done.

 

Porsche 997 GT3RS and GT3RS 4.0 Dyno Testing on Vimeo