Has anyone else used these and what are the impressions, for engine smoothness, noise, power-curve? I have these fitted and think there is excessive noise increase, bottom end loss and good top-end gain only...

what is wild cat? is that a model or company? is it the pacemaker the same as wild cat?

From my experience wild cat are shite, I had them fitted to my old TP a while back, cost $300 installed, made no difference what so ever :evil: . I think I gained about 1 entire kw out of them, so lets see now, $300 divided by 1....so on a money to kw gain ratio, I payed $300 per Kw :shock: :evil: :shock: :evil: :shock: :evil: . So yeah, don't go with wild cat extractors no matter what you do, when I got mine I asked what brand they were gonna be and the fella said "probably" lukey....hhmmmm.

My suggestion altera, and some may disagree, but cut ur losses and get a good set of either pacemaker extractors or RPW extractors, wild cat is definitely not the way to go, not from my experience. :cry:

How much did they cost you by the way????

Umm... I heard someone bought some and then went to another modifier complaining that the Wildcats he bought had caused a massive whole in the rev range. Word has it that the primary pipes are way to big for what they should be. If that's the case, they're not going to be any good unless the engine lives about 7000rpm.

Now, that's what I've heard, no idea if it's fact. So, I'd be careful. There's a reason why people coined the phrase 'you get what you pay for'. Do the research before committing.

white devil, the wildcats are NOT the same as pacemakers. I booked the car in to have pacemakers fitted, the shop called back and said they had been sent the wildcats instead and they were as good if not better, cost more but I could have em at the same price, about 500-600$ fitted
I said as long as they were tuned length and mandrel bent go ahead. I found no gain at all except from 4'500-6'000 without any other mods, full induction work made bottom end problems worse, piggyback ECU has fixed all the problems except from immediately off standstill, its still unable to get wheelspin which it could when dead stock. Also a bad loss of ground clearance with these.

from looking at them now they dont look mandrel bent or tuned length so I rang Wildcat in QLD and confirmed they are not. Am now taking it up with the exhaust shop, but since theyve been on 6 months and the assurance they were mandrel and tuned was not written down, we will see what happens next week.

Anyway sounds like from other peoples experience its not just me bein paranoid, and I can tell this to the shop.

Nasty. Well, I think you've got a point there. Tuned length, mandrel bends are the way to go. Even without that, aftermarket headers should still give a reasonable gain. Sounds like the primary pipes are too big which is why you're seeing a gain high in the rev range. Also heard Wildcat were supposed to be cheap rip offs of Pacemakers. Don't know if that is true for Magna headers but was the case for some Commodore headers.