shamelessly copied and pasted from the jperformance thread:
I fitted the 4-2-1 today with minimum of fuss infact tbh I was amazed how easy it was to do.
The only thing is that the right hand stud on cylinder 2 (left to right) does allow one of the supplied washered nuts to be put over it as the manifold pipes are physically bigger. I just got another nut and used that. As an observation the clearance for the lambda sensor cable in front of the fan is minimal so take care with this after fitting.
It sounds -a-fuckin-mazing- however...WARNING..is VERY loud with a de-cat and cat back.
There is a noticeable improvement in mid - high range pull and it seems to make the power delivery a bit smoother too.
I didn't fit the short shifter as I'm going to adjust my clutch / figure if its fucked first as it's slipping pretty bad...that and I was running a wee bit short for time in the garage I used.
I fitted the 4-2-1 today with minimum of fuss infact tbh I was amazed how easy it was to do.
The only thing is that the right hand stud on cylinder 2 (left to right) does allow one of the supplied washered nuts to be put over it as the manifold pipes are physically bigger. I just got another nut and used that. As an observation the clearance for the lambda sensor cable in front of the fan is minimal so take care with this after fitting.
It sounds -a-fuckin-mazing- however...WARNING..is VERY loud with a de-cat and cat back.
There is a noticeable improvement in mid - high range pull and it seems to make the power delivery a bit smoother too.
I didn't fit the short shifter as I'm going to adjust my clutch / figure if its fucked first as it's slipping pretty bad...that and I was running a wee bit short for time in the garage I used.