You can get a less restrictive exhaust, the whole thing replacing manifold + cat as well would be good but cost as much as car is worth. Only viable option is whats called CAT back sports exhaust. Prices vary from £160 to almost £400
Also notice our 8v cars only have 1 box in system so I would imagine exhaust is already less restrictive than a 16v cars exhaust. I'm after one cos I have a 2003 car needs new exhaust tail and mid, car should last another 5 years or more so stainless may be worth it if only another £100. Back box changed by previous owner not that long ago but does not seem to have lasted at all.
Supersprint are apparently excelent. Y
ou need:
814412 straight pipe mid
814405 back box
If I could find this for £250 fitted I would buy,
I cant get god prices though so will probably follow other link and buy MIJ as other link sugests.
Whatever outcome I dont expect a lot more power,
I may be wrong Id like to know what others say about *v standard engine + sport exhaust or sport exhaust + induction kit.
Best simple thing for power IMO is a new air filter every 6000 miles whateve manufaturers say. 5 min change yourself. About £5 fron a proper motor factors.
Oil + oil filter on most cars probably every 9000 miles too.
Never ever let garage change oil without changing filter.
Some people dont change for 20,000 miles or more, like they forget about it.
if air filter is black thilthy you loose economy + power.
Could be even be down 10bhp on standard if never changed oil, plugs + filter although plugs can last a long time these days.