[Murphdog660]

im getting my super 40 installed next week. its a 3" in dual 2.5 out. im doing straight pipes and i have 3" tips. should i get 2.25 inch pipe or go with 2.5. what about back pressure loss with larger tail pipes

 

[lethalyoyo]

Dump Them

 

[Z71offroader]

2.5" is the least i would go.

 

[91_bowtie]

It's not back pressure that you'll lose, its velocity. As long as it's after the muffler, you'll be fine with the 2.5". The single 3" is perfect for these trucks. :imo

 

[Hit Man X]

It's not back pressure that you'll lose, its velocity. As long as it's after the muffler, you'll be fine with the 2.5". The single 3" is perfect for these trucks. :imo

EXACTLY. Velocity is the key. :imo

 

[Murphdog660]

sounds good to me. so 2.25 pipe is to small. also with the bigger pipe will it be louder.???

 

[91_bowtie]

The 2.25 or 2.5" will be fine, as long as its AFTER the muffler. The bigger pipe will be a little deeper.

I ran a single 3" all the way back on my truck, while putting about twice the hp to the rear wheels, and it ran just fine.