JPC Over the Axle Pipes Test:

[Shaun@AED]

Ressurection #2. The pics in the original #1 post don't show up. What kind of power gains did you see Shaun???
Thanks...

7HP if memory serves

 

[bottle fed 14]

Would the kooks 3inch outperform the over the axle jpc or would gains be about the same

 

[fuelforfire87]

7HP if memory serves

Would the kooks 3inch outperform the over the axle jpc or would gains be about the same

My question was not the HP difference between the stock and JPC pipes, but at what power level would it be more beneficial to have a 3" catback system vs these pipes. While doing some more research it seems that a 2.75" system is good for at least 700 whp. American Muscle did a bolt on build up for the 13-14 GT500 and it was able to make over 700 whp with the only mods to the exhaust being and offroad x-pipe and axle back.

https://www.youtube.com/watch?v=S8AawLcv2Xk

There is also a video of lethal performance taking their 13 GT500 into the 9's with what appears to be the stock over axle pipes and mufflers.

https://www.youtube.com/watch?v=FOGEt6n6rJI

I guess that's reason enough for me to stick with the JPC pipes. I'm sure there would be gains by going with the kooks 3" system but they would not be that much until you start making some pretty serious power numbers