As some of you saw in Izzone's recent thread we scheduled the install and dyno for his Akrapovic Cup system.
Car is a 2010 GT3 RS bone stock other than the Akrapovic system. No tune, no filter.
Here you will find some pictures and videos from the install and tomorrow morning the dyno sheets, as we are coming from a 22hs long day. So we deserve some rest.
We also weighed the stock system and the akrapovic. A interested fact is that the Stock GT3 RS titanium center muffler is lighter than the Akrapovic, but the quality is ... well I'll let you decide

Gains were obtained in the mid range, with no loss on power. We saw a 3-4whp difference up top (high rpm), but the car need more miles so the ECU could adapt to the different exhaust flow and back pressure change.
The sound on the Akrapovic cup system, is amazing, a deeper tone, at idle and a nice sound on the high RPM's, no drone at any RPM, we did highway test at different RPM's with different loads, and is just perfect.


Up on the lift for the removal


Dyno for baseline



The new system, roughly 30lbs lighter.


installed an ready to go


close up


Baseline dyno video


Akrapovic Cup system video




Erik


FLA997


John's Gurney lip and fire extinguisher install


Izzone - The handy man


Party crashers


Trakcar's Beater

 

The Akrapovic exhaust build quality is amazing and the Sports Cup GT3 exhaust is a joy to listen to with the windows rolled down.

The low end torque suffers a little but after 4k RPMs.... it is a blast!!!!!!

Had it for about a year now and am still enjoying it from day one.

The exhaust tips will turn a pretty rainbow color inside the tips and will turn a nice burnt titanium color all around after a few heat cycles!!!!

 

Great exhaust!

 

Didn't realize that Randy had reinstalled the whole stock system. Or was that just for a baseline?

 

talk about an amazing event, Sounds like a fun time

I like the little heat sheild akropovik sells with the final muffler and side j pipe arrangement

How many miles does it typicaly take to see dme adjustment?

Is there no way to make the computor adjust right away? Unplugging the battery ?

Will the dyno results be different after the computor adjusts?

 

Usually 20-30 miles should be enough. By unplugging the battery you reset all the adaptations and 'learned' parameters.
Not that I know of ... you can keep the car on the dyno for longer periods, making pulls or simply running.
Not by much, but most likely will.

 

so, what are the numbers....?

 

I want to say 435whp and 308 tq, but not 100% sure. I'll post the dyno files tomorrow.

 

randy, dumb question, do you still have a sport mode??

 

No sport mode, side mufflers deleted.

 

Wow. Sounds like you guys had a great time. Thanks for posting.

 

Just post the dyno sheets for gods sake!!! You guys have been dragging this for too long. Everyone is waiting for the results I actually don't even want to hear the results because it's so unnecessary to spend so much money on an exhaust system instead of hiring a pro coach (for me).

So the car didn't loose any power or torque down low? Was the ECU stock?

 

If im not mestaken you put a screw in the vac tube to cap off when disconnecting & removing the sport flaps/side mufflers


here is another version dynod (europipe track setup) @ 3000rpm this thing gets busy and its no looking back
and see the price of this europipe race exhaust too??/ damn

http://www.6speedonline.com/forums/g...-review-2.html

 

amazing IZZONE - cant wait to hear more about this one.

 

Please dont forget to post the air fuel ratio graph too.