Originally Posted by
zetaboostboy522bhp
There would be gains to be had but they wouldn't add a vast amount of bhp because of the boost etc your running , a well designed manifold will give slight gains low boost but really come into its own at high boost pressures. The jenvey plenum which was originally design for the evo engine made 76 bhp just by adding it to the engine with a map to make sure the fuelling was correct no added boost etc. In the test in one of the ford mags they did a test on zetec turbo inlets running low boost 8 psi I think and the jenvey and area six inlet did very well. If you think £750 + for 20/30 bhp is value for money then go for it but try getting that much bhp anywhere else on a engine for less than a grand.
Plus it's not all about bhp like I said earlier I would much rather have my engine running 20 psi make 500 bhp than 30 psi make 500 bhp and it can also give you a lot better throttle response throughout the Rev range.
Gus i take it your just using the mounting plenum chamber and not the roller barrels mated with throttle bodies?
Cheers Paul
TBH, my Clio prior to me buying it came with a £200 remap. If it were me I would not have paid for it. But it dos vastly improve the experience ; it's no longer flat below 5krpm like the rest, it feels bigger than its size. I can see where you are coming from.
I'm debating going to EFI but am deciding what hardware to go with ; I already have a spare MFI manifold.