So with my past h22/h23 builds I've always gone with a 3" exhaust and try y header with the 2.5" collector. If anyone has experience or advice with which size e-cut out I should use it would be much appreciated. Looking to make 250whp skunk pro1 h23a with a ported head and intake manifold, tri y header, your typical stock block build. i should have the car running soon anyone with positive knowledge please chime in.😃

 

Definitely 3"

 

Yes going 3" on the cutout for sure. It's strange how many view a topic yet give no feedback with so many builds and experience from other members. We need to share our knowledge.

 

It is weird. This forum used to be a lot more active. Seems everyone is on to facebook groups now. Facebook sucks though!

 

The 3" exhaust topic has been beat to DEATH.

That's why nobody responds, it's not really up for debate. You asked a black or white question, and it was answered correctly in the first post, with a back or white answer. It really doesn't get any clearer than that.

Also, I agree with the facebook comment. Those groups are ******* cancer... so much misinformation and idiots chiming in with no knowledge... but it's cool, because that post will be gone in 8 hours and we'll be onto a new one.