Fabspeed bypass pipes - worth it?? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

mts · 09-04-2009, 05:58 AM

Quote:

Originally Posted by bmwm750

I have the TurboWerx headers and a RoW reflash, and it's great. While the secondary cats aren't great, flow wise, and are heavy, the worst part of your exhaust are the headers, which are atrocious.

Interesting, there have been a few before/after's done on the Boxster headers indicating the aftermarket ones did very little and that the OEM headers, with the exception of being a bit ugly, worked pretty well and weren't the worst part of the Boxster exhaust system.

Do you have some before/after dynos on your TurboWerx ones? I'm not trying to be contrary, just looking for additional data. Thanks

jwade · 09-04-2009, 07:09 AM

See link...

http://turbowerx.com/Porsche_Products/Headers/986_Headers_Dyno/986_Headers_Dyno.html

silver arrow · 09-04-2009, 01:52 PM

Is it possible to just gut the second cats?

jwade · 09-04-2009, 07:50 PM

Quote:

Originally Posted by silver arrow

Is it possible to just gut the second cats?

I think that would be a waste of time....

2K3_Boxster_S · 09-06-2009, 09:39 PM

If you do a full setup from front to back meaning better flowing headers be it because of fewer CELLS or No Cells, Delete the 2 rear Cats and put on a non-baffled muffler. It will sound like a completely different machine. at least for me it did. I dont' think just the By pass pipes is enough maybe you could do some before and after Vids i would be interested. Also I don't think 8 hp would be that noticeable not like 20-25 hp. good luck

23109VC · 09-07-2009, 07:55 AM

as I live in CA, there is NO Way I can go to a totally catless system.

I'd have to have a system with at least the high flow cats built into the front headers. then I could do the cat delete midpipes and change my muffler. on a system like the NHP, that setup is about $2000, which is more than I care to spend on exhaust...

and I have doubts I'd really get 25hp on my 2.7L from that setup.

i'm in the process of picking up a tequipiment PSE muffler to replace my "pedro" muffler...which as far as I know, is no more free flowing than stock, it just sounds better.

edevlin · 09-07-2009, 08:07 AM

"and I have doubts I'd really get 25hp on my 2.7L from that setup."

Me too, I was able to pick up about 25hp on my 2.7L, but that was with new intake, complete cat-back exhaust and custom ECU chip. That makes for a very expensive 25hp......

Ed