I just posted this in another thread but I suppose it's relevant here also:
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Hey guys. I know I don't post on here too often, but I just fitted a k-tec stealth MkII to my 172 cup and thought I'd get my tuppence in:
Firstly: Service from k-tec was spot on - I phoned them on Thursday afternoon (rather desperate as my oem exhaust had already fallen off) and they kindly dispatched it to me by USP (cost me extra of course) which arrived the next day.
First impression: Build quality was excellent – nothing dodgy looking at all about the welds etc.
Fitting to the car: Piece of cake - everything lined up exactly as I hoped it would, with easy adjustments to get it sitting just right. I pasted all the joints and there’s not a single leak anywhere.
Acoustics: Perhaps a bit louder that I really wanted (I’m more of a ‘standard’ kinda person), but it’s not too loud. Put it this way – when the car is idling you know it’s there. When cruising (up to about 70) it’s not too bad either – above 70 it gets quite loud. Giving it the beans: You certainly know it’s there – so does everyone else within half a mile. Don’t get me wrong though, it gives off a pretty decent sounding rip.
Performance: Very subjective I know, but I reckon there’s an improvement – feels a lot less restrictive in the higher rev range.
Overall I’d prefer something a little less boomy (i.e. the standard sound), but I can’t say I’m unhappy with what I got – considering Reno wanted the same dosh for a replacement oem system.
BTW: my oem exhaust lasted 50,000 miles and fell off the day after I heard it blow – just a warning to those with a blown exhaust.
Cheers all.