I see we have some educated people joining the discussion here aswell.
Fake? Exactly WHAT part of that exhaust is fake?
LOOSING HP? It lost a bit of low range, but felt a lot more alive from about 3000rpm's and upwards. And I've just changed back to the stock system due to a test I need to go through with the car (which includes measuring exhaust dB's). And now, with the stock system back on, it's back to having a bit more low end, but feeling much more lazy up in the high range. But I guess that's why people buy bigger high flowing exhausts -- to loose hp. Clever.
easy killer, if you dont like getting flamed dont post. Anyway, the term fake is because it is not a true dual exhaust. One manifold/header, one pipe, one catylic, one muffler as opposed to two headers, pipes and mufflers. The loss of power is because of backpressure, and putting dual on an I4 is too much relief of backpressure. Its a fine line when it comes to backpressure, and the duals will generally cross that line. Anyway, it still looks nice and i bet it sounds nice, and it looks like a quality custom. just not my bag of beans.
In that case, a LOT of cars with stock dual exhausts are "fake". Anyways, that really doesn't matter. And I've got nothing against opinions about the system. And other people shouldn't have something against getting comments back either
Backpressure is an issue. And this exhaust has been made by a shop who only deals in exhausts, and makes custom exhaust systems. They've got xx years of experience in making them, and I trust them. The system I have on my car now is made from after the cathalytic converter, and only has a quarter of an inch or half an inch (think we settled on a quarter of an inch) bigger pipes than stock. And we didn't go any bigger than that due to the (small) size of the engine. You may also notice the 2 "cans" (middle of the car, and by the rear axle) that also provide pressure.
I had a system a while back on a 2.0L 16v 140hp engine, that replaced the cat and everything, and expanded the size of the pipes with 1 and a quarter of an inch. That system made the car loose power 'cause there was not enough pressure.
The system on my celica is good. It might look big from the pictures, but it's not some over-the-top home-made shit made by some dumb ass (me?) in his garage