So far Ive had no problems.

As far as power gains goes, I have'nt noticed a major difference and its hard to tell as the exauhst is louder.

A friend of mine has had his powerflow for 2 years and theres no rust on it whatsoever and we have had the car up on ramps to check.

The only thing I have noticed is were the heat has turned the steel a copperish colour just by each pipe.

Also as far as I know a new standard exhaust for an MR2 is pretty pricey anyway

(around

£200) so it makes sense if your existing exhaust needs replacing.

Im also hoping that the lifetime guarantee that powerflo give you is actually worth the paper its on! Im sure it will be.

If I get any problems with mine Ill post them up.

Cheers!
Dan