As I work best intercooler piping, 3 inches or 2.5 inches???? At this time the turbine to the intercooler in 2.5 inches and 3 inches intercooler to trottle. The nozzles of the intercooler are 2.5 inches and 62mm trottle. 31X12X3 intercooler, presicion turbo 6262sp

 

2.5 is usually ideal

 

depends on power goals. anything over 450.. I would go with 3 inch intercooler to tb like u said

 

My software can do the math for this, but like they said depends on the power goal... but also depends on the boost level


http://www.superchargerperformance.c...alculator-v2-3

The higher the boost level, the more compressed the air, the less id piping you need... flowing 500hp @ 0psi will require a larger pipe vs flowing 500hp @ 25psi

So what boost level / power level are we talking here ?

 

I go for 400-500hp at 24-30 lb of boost

 

someone uses piping 2,75?

 

2.5" becuase a smaller pipe will force the same volume of air than a larger pipe but faster. Since it is not exhuast piping no need to worry about backpressure. Although to small a pipe will bottleneck large cfm. If the kit was designed to go 2.5 to intercooler and 3.0 from intercooler to throttle there was probably a specific reason, but you should avoid reducing the pipe size to the throttle. If you run 25+ psi like you want to, it would be better to increase turbo out to intercooler in.

 

The trade-off here is that 2.5" piping will fill faster (build boost quicker) and force the air to move at a higher velocity into the engine; however, at a point, 2.5" piping will add a lot more resistance to the air charge which does lower the power per psi that the turbo produces. If you look in the Forced Induction FAQ, there is a thread which outlines where and when you'll see friction losses due to overly small piping.

 

Thanks bro

 

Thanks bro

 

3''...more air flow