Is it just the Macs, or is it all brands? Thats my next mod and I don't want this problem. Is it true that 00+ stock exhaust manifolds flow better than the 99- ones?

 

I never had oil issues with my Mac header, my Whisper headers, or my QTP headers.

Yes, '00+ manifolds flow better.

 

Colonel,
Just curious how you had your PCV connected when you ran your macs with no oil issues. Just wondering if most of the oil consumption doesn't come from PCV being pulled into the intake manifold neck because of it necking down to 72mm creating a strong vacuum signal at full throttle.
Were you running a stock type intake
with PCV hooked up in stock fashion?
thank you
Dan