I have a 2.2 astra convertible mk4. I'm looking at fitting a full stainless steel exhaust and making some mods to the induction. I'm after some advice from the experts:
1) Which would be the best s/s cat back exhaust which would sound nice without being too chav loud, miltek, scorpion etc?
2) Should I do the exhaust manifold mod and remove the inner gauze?
3) What about the s/s de-cat pipes available, any good, will the 2.2 pass an MOT on emissions without the cat?
4) Induction kit wise, whats best viper, k&n or original airbox with performance filter? The 2.2 air inlet pipe is at the front so a cold air feed pipe would have to go back on itself if that makes sense.
What have other 2.2 owners done to increase performance? Cheers, Mark.