not been on for a while a few personal problems stopped things but now all is sorted things are back on track and the car is near the top. i want to de cat my manifold and was wondering if a constant management light would be on. and what diffrences there is to a s/s manifold or a de catted one thanks.

I've de catted my standard manifold (but left the main one in the exhuast in) and i've never had any engine lights.

Stav

Standard manifold with de-cat or S/S one, you should not get the e/m/light on

Am I correct in thinking one of the O2 sensors needs extending a little with the Pro-Lex Manifold I have on mine ?
I love mine to bits, but never had the S/C on without the S/S Manifold. It should I believe go slightly quicker mate.

Will de-catting the standard manifold actually make that much difference though on a standard IS?

Yes, but very little really