valver manifold or willy one? beaten cat or de-cat?

[midge]

wiht my cams going in this week i will be getting hte car mapped soonish so my question is do i stick with the willy manifold or do i go to a valver setup?

When i picked my engine up fron nick at hillpower he told me he had tested both manifolds back to back on an engine dyno and the valver one was best all the way through, he also said he had a renault race car at the rr day and that to was using a valver manifold his words "so Renault also know its better"

theres plenty of people that say a williams one is better, i just want everyones thoughts..

Also if i goto the valver setup i would have to beat the internals out of a cat since i dont have a de-cat, is there any disadvantage doing this over a de-cat?

[AndyFielder]

go valver setup buddy, get a decat off the net £35 tops.. i think luner is making them up.

Valver or supersprint i say!

(got the boot home... bootlids comming soon!)

[Mr.AdamB]

valver manifold is w**k as far as im concerned cant get the gas otu faste enough on my hybrid up high rpm! its meant for the 1.8 16v so ti should stay on that! 8) so willy, supersprint or meggy

[AndyFielder]

supersprint is what you want.... the valver runs at higher RPM.. the manifold is designed for iger RPM and from what i have seen the ID of the tubing is smaller on the williams manifold!

[FlamingMonkey]

Williams manifold

[Lunner]

Supersprint