How much BHP will a downpipe add to GT4 Options

[alf15]

I'm thinking of getting a downpipe or de cat for my GT4, im just wondering how much extra HP will it add to my gt4.

I was looking on ebay and they have a good few, what are the downpipes for $60 like? Or what is safe price range for a good down pipe that wont crack etc

What do you think if these to downpipes.

Downpipe 1

Downpipe 2

Thanks

[Aus]

Not sure about exact gain, but you'll get much better throttle response (I found on mine that boost comes much quicker than with standard and on full boost much sooner. Saying that I fitted the dp when I did a load of other stuff on the car, so im not sure exactally what effect the dp had). You've got to keep an eye on the boost though, and get a boost controller if you aint got one.

I bought a cheapie one off ebay (XS power), some people say the have had problems with poor welds etc, but mine is fine...so far anyway.

This post has been edited by Aus: Dec 4, 2006 - 7:12 PM