Originally Posted by 180SX

Yes, but Full Race starts at $1000
Cast starts at $200 with a flange added.

Once you drill your primary 38mm hole, drill at least a 25 mm hole through the wall you see dividing the manifold. No this is not flow benched or tested, but it got rid of a 3-4 psi spike I was seeing on all turbos using this kind of manifold setup.

BTW... they might not be Full-Race or PB manifolds, but if you have a budget and aren't trying to squeeze every last bit of HP out, this is a good alternative... and I have gotten 420 rwhp out of these fairly easily.


Martin
XAT RACING