04-27-2020, 04:12 AM
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#1
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Will there be cake?
Join Date: Mar 2017
Location: East Coast
Posts: 623
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circuit werks or Blackhorse cat backs?
in a squeeze for time to buy, so quick...like to hear some opinions on this:
I am preparing for a clutch job and after getting my exhaust off, I'm leaning towards slapping on a catback system from ebay.
1. should I go with the blackhorse-racing or the circuit werks?
Circuit werks is about 50 bucks more, but from the pictures, the blackhorse just
looks nicer.
Also, I see systems that are combo straight headers and cat back (using the secondary cat) by reusing the center pipe.
2. Does this introduce tuning and CEL problems but eliminating the front cat?
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04-27-2020, 05:52 AM
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#2
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Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
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You will most likely get a cel if you switch to headers. The secondary cats will require a long O2 sensor lead to reach the downstream bung. My Circuitwerks high flow cats threw a cel for insufficiency. You would then need a tune to eliminate that. You might watch some of my videos which deal with these things.
The Porsche as seen by NewArt
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
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04-27-2020, 08:45 AM
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#3
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Registered User
Join Date: Sep 2019
Posts: 64
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For what it is worth, I have the circuit werks 2nd cat delete on my 02 S, no code issues and have seen a few muffler cat back kits and they seem to be quality. My 2nd cat deletes and U pipes to muffler fit great and welds were very nice. Also, they are out of TX/ USA!
I would recommend them and there are some bosch o2 sensor extensions that you can make if needed as well.
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04-27-2020, 11:38 AM
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#4
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Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
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Quote:
Originally Posted by aparke4
For what it is worth, I have the circuit werks 2nd cat delete on my 02 S, no code issues and have seen a few muffler cat back kits and they seem to be quality. My 2nd cat deletes and U pipes to muffler fit great and welds were very nice. Also, they are out of TX/ USA!
I would recommend them and there are some bosch o2 sensor extensions that you can make if needed as well.
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Yes, a secondary cat delete won’t throw a code if you’re running stock headers which have the primary cats integrated in North America.
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
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04-27-2020, 12:03 PM
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#5
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Quote:
Originally Posted by NewArt
You will most likely get a cel if you switch to headers. The secondary cats will require a long O2 sensor lead to reach the downstream bung. My Circuitwerks high flow cats threw a cel for insufficiency. You would then need a tune to eliminate that. You might watch some of my videos which deal with these things.
The Porsche as seen by NewArt
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James,
You answered it here apologies. So do you think some other make would not throw a code ie if they flowed less?
__________________
986 00S
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04-27-2020, 04:54 PM
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#6
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Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
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Honestly, I’m not sure if the Circuitwerks wouldn’t have been okay had I not done all the other stuff before having the tune. What I mean is, I may have burnt out the cats by running a too lean or too rich condition due to my other mods before I got the proper tune. I wish I could be more helpful but I tend to have great 20-20 hindsight!
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
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04-28-2020, 04:07 AM
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#7
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Registered User
Join Date: Sep 2012
Location: S. New Jersey
Posts: 1,239
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I used Circuit werks and they fit without issue. I loved the extra Note they gave plus a pit of weight removed. Hardest part was removing the 3 bolts/nuts at the collector. I thought they were priced right
__________________
2002 S - old school third pedal
Seal Grey
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05-01-2020, 05:43 PM
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#8
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Will there be cake?
Join Date: Mar 2017
Location: East Coast
Posts: 623
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think I am going with the fabspeed setup, second cat delete and streamlined mufflers. 1400 bucks, but Im already at 800 with the cheap stuff off ebay if I do the same thing, so...thoughts?
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05-02-2020, 09:57 AM
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#9
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Quote:
Originally Posted by NewArt
Honestly, I’m not sure if the Circuitwerks wouldn’t have been okay had I not done all the other stuff before having the tune. What I mean is, I may have burnt out the cats by running a too lean or too rich condition due to my other mods before I got the proper tune. I wish I could be more helpful but I tend to have great 20-20 hindsight!
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Thanks, for the comments. Everybody's experience is valuable especially people like yourself who have gone and done these things
__________________
986 00S
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05-02-2020, 10:07 AM
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#10
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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Quote:
Originally Posted by NewArt
Honestly, I’m not sure if the Circuitwerks wouldn’t have been okay had I not done all the other stuff before having the tune. What I mean is, I may have burnt out the cats by running a too lean or too rich condition due to my other mods before I got the proper tune. I wish I could be more helpful but I tend to have great 20-20 hindsight!
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Thanks, for the comments. Everybody's experience is valuable especially people like yourself who have gone and done these things
__________________
986 00S
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05-05-2020, 04:42 PM
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#11
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Will there be cake?
Join Date: Mar 2017
Location: East Coast
Posts: 623
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OK, I pulled the trigger, took the plunge and purchased the fabspeed Supercup Exhaust System...pricey but should be loud and pretty. 40lb weight savings too.
Anyone know how quick they ship? cuz I havent gotten any shipping notifications or anything
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05-09-2020, 03:24 PM
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#12
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Registered User
Join Date: Mar 2020
Location: Toronto
Posts: 38
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Quote:
Originally Posted by tonythetiger
think I am going with the fabspeed setup, second cat delete and streamlined mufflers. 1400 bucks, but Im already at 800 with the cheap stuff off ebay if I do the same thing, so...thoughts?
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I went with the Fabspeed maxflow for my 2001 Boxster S. Love the sound above 3500 rpm, not digging the drone around 2000 rpm that makes highway driving a bit of a drag. The engine has more high end zing and ripping to the redline is addictive. Does it feel any faster? Marginally but it might just be because of the sound. You're not going to notice an extra claimed 7 hp and 10 lb-ft in the top end.
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05-10-2020, 04:50 AM
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#13
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550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
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I've run the cheap manifolds with 100 cell cats for about 3 years then with 200 cell cats for 3 years with no remap. Goes well but is always a bit close for emissions.
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05-10-2020, 08:28 AM
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#14
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Will there be cake?
Join Date: Mar 2017
Location: East Coast
Posts: 623
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Quote:
Originally Posted by PeterBleakney
I went with the Fabspeed maxflow for my 2001 Boxster S. Love the sound above 3500 rpm, not digging the drone around 2000 rpm that makes highway driving a bit of a drag. The engine has more high end zing and ripping to the redline is addictive. Does it feel any faster? Marginally but it might just be because of the sound. You're not going to notice an extra claimed 7 hp and 10 lb-ft in the top end.
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Right, don't expect performance upgrade, but reduced weight and complexity. Louder is cool and I generally don't do highway in the car anyway, but I could live with the drone also. I spent my childhood flying everywhere in little planes and that is a constant drone on trips...I liked it.
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