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Has anyone used Fabspeed Cat Bypass
I'm thinking of purchasing the Fabspeed cat bypass, will I have OBDII issues?
Helio
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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Neerlandofiel
Join Date: Jan 2013
Location: Long Beach NY
Posts: 353
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My car has one. No issues. It has a bung for the o2 sensor. You will want a wong chip set up for it though.
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1990 944S2 Baltic Blue 1,960 original miles 1989 944S2 Guards Red 82,000 miles Gone: 06 Exige, 08 Cayman S Sport, 67 911R Hotrod, 09 Cab, 93 RSA, 91 964, 13 Boxster, 15 Macan S, 05 Elise, 00 M-Coupe, 71 914-6, 75 Carrera, 11 997 GTS etc.. |
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Hell Belcho
Join Date: Sep 2006
Location: Oz
Posts: 9,249
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I've installed 5 of their systems. Expect a certain amount of tweaking to get it to fit. A torch helps.
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Registered
Join Date: Nov 2010
Location: Missouri
Posts: 2,186
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Be prepared for a rather unpleasant odor when cat is no longer there, didnt realize how bad it is until I got behind a ricer who had modded his system
Is your car OBD equipped?
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I think that maybe I'm dreaming.. |
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I just bought a 97 993 , I know that the OBD II cars have sensors before and after the cat, Once the cat is no longer there, the sensor will read as being to rich. i'm pretty sure that the engine light would come on at least and maybe the DME would try to lean it's self out , not sure
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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Registered
Join Date: Jul 2013
Location: Brisbane, Australia.
Posts: 2,610
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I bought one for my 964... ran fine, no warning lights etc..
Didn't seem to increase the volume of the exhaust either... However, the smell was horrible.. I really didn't know to expect that. It always smelled like a rich running car.. when we stopped at the lights, the smell would blow in the car... After a couple of months, I have the stock cat back on... car runs clean now. |
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Registered
Join Date: May 2008
Location: Merrimac,WI
Posts: 895
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I have the cat bypass on my 98, CEL comes on some times but engine runs fine and sounds great.
94targaC2 is correct about the odor. 02 front sensors are used only, rear ones not. I will be selling my in a few weeks if you need a set. Need to install Cat for possible sale. Mark |
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Neerlandofiel
Join Date: Jan 2013
Location: Long Beach NY
Posts: 353
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Anyone try a sport cat rather then the bypass?
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1990 944S2 Baltic Blue 1,960 original miles 1989 944S2 Guards Red 82,000 miles Gone: 06 Exige, 08 Cayman S Sport, 67 911R Hotrod, 09 Cab, 93 RSA, 91 964, 13 Boxster, 15 Macan S, 05 Elise, 00 M-Coupe, 71 914-6, 75 Carrera, 11 997 GTS etc.. |
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I have their sport cat, and secondary muffler delete. Sounds great, no complaints.
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1990 964 C4 Coupe & 1991 964 C2 Coupe (current) 1989 911 Targa (sold) 1996 993 Cab. (sold) 1999 x2 Boxster (sold) 2006 Cayman S (my daily) |
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Registered User
Join Date: Jun 2011
Posts: 77
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Installed a cat bypass, with existing cup pipe. The bypass definitely make the car sound more raspy, but in a good way. Also did a sw chip and I could feel the power improvement. BUT the smell is probably going to be a deal killer, I might be overly sensitive but the smell gives me a headache.
Any feedback if a sport cat would still allow for the sound and power advantage, without any smell? Anyone also make the switch due to smell and happy with the sport cat. I know some of you guys don't smell anything, so I'm looking for feedback from folks that do notice the smell. |
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I have a 95 with fabspeed cat bypass and maxflows. I ran it with the sport cats for a few months then put the straight pipes in for a track day. I left the straights in and you can REALLY smell the difference. Those sport cats scrub the exhaust a lot more than I thought they would. I've gotta get them back on
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Registered
Join Date: Jun 2011
Location: NY
Posts: 2,433
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My wife is the primary driver of a 964 with Fabspeed cat bypass and muff delete. Yeah there is some smell but we don't mind.
I happen to have some really cool old carb 911 cars and they also smell. So I guess - odor is in the nose of the beholder. The sound, the throttle response and all the other benefits (40 + lbs lighter in the rear) are clear winners. |
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Quote:
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1995 993 C2 Last edited by EMBPilot; 05-24-2017 at 08:11 AM.. |
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Registered
Join Date: Oct 2014
Location: Massachusetts
Posts: 41
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Hey EMBPilot,
Foxman here. Good to see you positing over here. I've been running with the sport cats for a while now, but I just picked up a pair of the bypass pipes. I'd like to avoid a CEL on my '97C2S. Is there anything I need to be concerns about? I'm hoping to just get the O2 sensors out of the way and use bungs so I can quickly switch back and forth without messing with the 02 sensors. Thanks, and cheers! Jordan Price, what does the Wong chip do? |
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hey fox! the bypass pipes have the holes for the 02 sensors right? i think the spacers should still work, i would use spacers from the get go, is that what you're planning? we havent done a 993 with bypass here, we have only done the sport cats and all have been trouble free install and post install.
sorry i missed this post the email went into my spam folder
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1995 993 C2 |
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Registered
Join Date: May 2016
Location: TX Hill Country
Posts: 33
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Just added the Fabspeed cat bypass, maxflo exhaust and SW chip. Very noticeable improvement in sound and performance.
No stink noticed (at least not yet after a couple hundred miles) with windows down or top down (Cab). |
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I traded my 993 for 964 Turbo and I installed Fabspeed cat bypass, very happy with it,,
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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Vendor
Join Date: May 2014
Location: 155 Commerce Drive | Fort Washington, PA 19034
Posts: 341
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Quote:
Quote:
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Hamsa Naser Hamsa@fabspeed.com W: +1 267 742 3006 |
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Registered
Join Date: Apr 2009
Location: Arlington, VA
Posts: 137
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I love my sport cat and supercup setup! Most people have positive responses when hearing it for the first time. Caveat: primarily track use and not a daily.
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Registered
Join Date: May 2008
Location: Merrimac,WI
Posts: 895
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I had the bypass for three years, very nice sound but the smell was to much. Put cat back on and purchased the Fister Stage III exhaust....Mutch better sound and the smell was gone. Mark
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1974, 914-6 GT Tribute 2007 Cayman S 1998 993 Carrera S, speed yellow (Yellow Bird) gone but not forgotten. 2017 Golf Sportwagon 4motion Exclusive source for the 914 Umbrella and Service cover |
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