I'm getting the Percision 750hp cooler to support 600whp
What size pipes do I get 2.5" or 2.75" ???
Do Inline Pro use the percision cooler?

 

2.5

 

There can be allot to consider when choosing pipe size. What exact setup are you running as far as manifold and piping desig goes. If you are really trying to get 600HP you will benefit decently from 2.75 or 3" cold side piping for sure. It just all depends on what you wanna do with the car really.

 

im not so sure 3" would gain you anything if at all, 2.5" should be easily enough.

 

http://www.honda-tech.com/zerothread/2409417

This should end all questions.

 

2.5 on the hot side 3 inch on the hot side, this will give the air more velocity and speed when entering the manifold

 

out put of turbo will be a factor, and the stock TB necks down to 2.5 at the butterfly. so going with a lager pipe would not make any difference. plus larger the pipe more volume you have to pressurize i would imagine taking more time to get to max boost.

 

Thanks for the info
I have a GT35/40R 0.82A/R
As much as I figured it can flow about 60lbs/min X 14.27=856CFM
That means that if I use a 2.5" pipe that brings me close to the edge

2.5" piping
4.90625 sq in = 2.453125 x 2
300 cfm = 100 mph = 0.13 mach
400 cfm = 133 mph = 0.17 mach
500 cfm = 166 mph = 0.21 mach
600 cfm = 200 mph = 0.26 mach
700 cfm = 233 mph = 0.30 mach
800 cfm = 266 mph = 0.34 mach
900 cfm = 300 mph = 0.39 mach
913 cfm max = 304 mph = 0.40 mach

 

No Prob. Its a very helpful table!

 

I am sure