I have just agreed the purchase of a GSI exhaust manifold on these boards for my 20xe and wonder if it would also fit my 1.8 16v Astra? Anyone know?
The 1.8 uses the same middle exhaust section as the gsi and the rear section is I think the same except the gsi has 2 pipes out and the 1.8 just 1 oval.
As to the cat section, I'm unsure but would decat it anyway as my local garage has accepted that if I produce the log book for the 20xe they will test it as a pre cat.
I would be interested to find out in the mean time while i'm assembling the 20xe if fitting the gsi manifold and decatting makes much if any difference to the 1.8 performance?
Yep I know I could be in for a bo**ocking if I get roadside tested but what the hell.