i am going to turbo charge my b18a(ls) i am looking to get around 250-300 whp. i was wondering what size throttle body would be good with this setup. is bigger always better!? or is there a downside to say getting a 70mm throttlebody

 

I was told by my tuner that smaller is better for turbo.it makes more power.He told me to get a 50 mm throttle body.There only one way to find out and thats on the dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboGUY &raquo;</TD></TR><TR><TD CLASS="quote">I was told by my tuner that smaller is better for turbo.it makes more power.He told me to get a 50 mm throttle body.There only one way to find out and thats on the dyno.</TD></TR></TABLE> hmm yea thats seems right NO!!!!!!

thats why when they put a 100mm throttle body on a 1000whp supra it gained 76 wheel horsepower, don't belive me pick up the latetest Turbo Magazine and check out the 3 supras they have.

smaller = more restriction. the whole idea is to improve how your engine breaths not make it worse... ie volumetric efficency