Here are my gains with the Downpipe....Closed vs Open....mods are in the sig....

 

So does CLOSED = stock cat and stock mufflers?

Because that seems like a really big difference if CLOSED = testpipe and aftermarket catback.

 

If you go with a cutout go McCord

 

Closed for me on that particular datalog was with the stock catback.....i just recently added the megan testpipe since it felt slow with the stock cat on....

 

wow nice gains, when I had to run the car with just the O2 housing and the front pipe I didnt really notice any increase in power, Can the noise and the vibrations from where the exhaust is coming out of the open pipe could mess around with the knock sensors?

 

From my logging experience, I haven't run into any phantom knock issues. I was able to tune to 0 knock when I just had the downpipe cutout on.

 

I haven't had issues at all with the knock sensor reading false knock.....

 

does QTP offer a pipe that aims downwards to avoid soot and other build up.... and possibly minimize fumes? if so thatd be pimp

 

Yes, covered back on page 1 or 2.

 

is it better to run a cutout or a full exhaust which has some backpressure?

 

Turbo cars want no back pressure. Just a about a foot of pipe is all that is needed.

 

I think I am going to get one of these..

 

QTP

I was thinking about buying your electric exhaust cutout and fiting it to a custom y-pipe off my test pipe.

Would something like this work instead of your switch

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

Maybe set it to 10psi and not have to worry about controlling anything once boost hits.

Any opinions???

 

How is the fitment with a Beatrush underpanel? I really want to get this piece but I dont want to loose my Underpanel...

 

Second that question about the under panel