need help with installing fabspeed bypass pipes - 986 Forum - The Community for Porsche Boxster & Cayman Owners

george g · 12-30-2008, 11:58 AM

Chris you definitely need the clamps and you should sand and smooth where the pipes fit into eachother. Lubing helps also but will smoke until it burns off. I live in RDCY if you want to see my install.
George

ChrisZang · 12-30-2008, 01:00 PM

Hi George,

thanks for the offer, I might take you up on it.
I have a friend of mine cut down the right pipe by 3/4 of an inch and will then see on the weekend how it works out

Thanks

releese78 · 12-31-2008, 08:38 AM

Well, I decided to get rid of my cats (98, so it only has one pair). Best money I ever spent! It's actually not much louder, if not quieter at idle. Mine were really old, plugged up and rattling.

Rather than go with the Fabspeed pipes, I had an exhaust shop custom bend and weld some they custom made. They even welded O2 sensor bungs on them for me so I don't have to eliminate the 2 rear sensors. So far no CEL.

As for power and torque, there's not a whole lot of difference, but it's definitely smoother and the throttle is more responsive. When driving, it's not too loud at all, screams a little at RPM's above 4500. Inside the cabin, it's still very peaceful.

It cost me $240 for the mod and took 2 hours. The hardest part was finding a shop that would do this for me. I cohersed them by saying I'd pay cash and not ask for a receipt so that liability is off of them.

jmatta · 01-01-2009, 07:03 AM

There are no O2 sensors on the secondary cats on later cars...can't speak to the early ones?

releese78 · 01-04-2009, 10:53 AM

Well, I spoke too soon. The CEL came on the first time I gave it some throttle. I read somewhere that you can get the PCM programmed to bypass rear O2 sensor monitoring. Is this true? Does the dealer have to do it or can I buy something to do it myself?

ChrisZang · 01-08-2009, 10:02 PM

back to my original post, for those interested:

After I took 3/4 of an inch from the passenger side pipe it now fits like a charm.
No adjustments needed on the driver's side. The pipes are original fabspeed pipes, the seller is Suncoast Motorsports in Florida. They had the pipes sitting on the shelf for a year as a return from a customer and they wanted to get rid of it, so I got lucky.
Apparently the clamps got lost in the shuffle in the year the pipes were in storage, but two exhaust clamps from the Pep Boys did the trick

And, yes the new sound: I love it

crios · 01-08-2009, 10:18 PM

Chris, I was bidding on the same set on Ebay, you beat me by $2!! LOL

I noticed one of you Mods in your sig. was "gutted exhaust". can you explain?