with the mods you've listed i would ave thought ur gonna get more back box pressure and not much performance gains as the exhaust gases will flow free'er and quicker from the manifold and de-cat pipe but get caughht up in the standard vauxhall system.
i might be wrong mate but i would have thought you'd be better off getting a full system first THEN get the de-cat and manifold.

Isn't the rear box the weak link on Corsas ?
Think I read that some years ago in revs so it may be wrong. Did'nt notice a big diff from mine replaced middle and back but got it faster from the other bits, s'only 1.2 16v though. That manifold is more bang for your buck. The inlet he mentioned for sale.

if ur after power fancy buying a lexmaul inlet??? Iv only had it a month and am very happy with it. However I may completely renew my inlet system with a velos plenum. or even go throtle boddies.

cost £430 would prob take £300 for it.

And to be honest if ur doine zaust manifold uv really should do the rest of the system.

[Edited on 30-11-2003 by aritchie]

i unclipped a little section on the bottom
took off hot air pipe and put a cold feed there
then i took off the hot air flap from inside the box

have u only drilled urs or chopped off half of it?

good innit itll help when summer comes round hor air n all
more torq with the air box

just swapped my bfo cone for my drilled air box and piperx panel filter and the difference in the way it drives is mad!

it hasnt got one anymore :) panel filter and i modded the airbox

dont u find ur car doesnt drive well with a cone filter on?

im looking at the pics of the zorst in ure garage and trying to imagine it on mine :(

bout 5 bhp

Uprated exhaust manifold and De cat pipe withe the standard corsa midsection and backbox.
this is on a 1.4 16v
cheers