Ok I'm on a debate right now.... should I keep my 2.25inch chargepipes the way it is right now or should I increase the diameter to a 2.50inch...or mybe keep it 2.25inch from the turbo compressor outlet to the FMI inlet and change the rest to a 2.50inch

My setup is as follows B18B with a t3/t4 with .57trim / 3inch Downpipe and Exhaust / excaliber manifold / AEBS intake manifold / forged internals with stocks sleeves /650cc etc...

The car will be set at 13-14psi daily driven...18psi at the track. thank you for your help, appreciated.

 

Honestly, I'd just keep the pipe size your running now. Your certainly flowing enough with the 2.25" and you really won't notice a big difference switching to the 2.50". You also don't want to go too big with the charge pipes, so I'd just keep the 2.25"

 

I agree
On the new set-up im running my pipes are only gonna be 2.25 and that's ona SOHC with T3.
If you got some extra money and you wanna test the difference between the two, go for it. Just make sure you post results

 

yeah i think the gains going to a 2.5" wouldnt be worth the work to fab new pipes... But if you start pushing any more boost you might want to upgrade... arent you already at 450hp?

 

more like 400-420whp at 18psi.....need to get tuned

 

give the tech support at bell intercoolers a call they will tell you eveything you need to know about chargpipe diamiter and air vilocity inside your charge pipes.

Beau