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Joined: Sep 2000
Posts: 383
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Joined: Sep 2000
Posts: 383 |
Anyone else with a SHOShop Y pipe had their CE light come on post-install? My error code is PO420 -- "low cat efficiency." Grr! Maybe I'll re-boot the EEC and try again.
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Joined: Nov 2000
Posts: 216
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Mines been on before and after, sorry I can't help
00 Audi S4
Silver and Black
(Bone stock)
98 Toreador Red SVT
#742/6535 (Totalled)
KKM induction,Sho-Shop Y pipe, removed resonator, Superchip,
B&M Short Shifter, Fog Light Fix
885 Fogs, Xenon Super Whites
Clear Corners w/clear bulbs
Removed Door Dings, TH Fix, ADR Phase II white 17s and Kumho rubber
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Joined: Jun 2000
Posts: 1,218
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Sorry never had mine on, try calling Sho-SHop and ask them for advice...........
Chow
1998 SVT #2263 of 6535
chowsvt@msn.com
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Joined: Aug 2001
Posts: 33
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Installed the stainless SHO y-pipe w/ cat along w/ a Borla cat back. Never saw the check engine light come on in my E0.
However, the instruction CLEARLY state to disconnect the battery during install to clear the EEC-V module.
Maybe the CEL light gets tripped on SHO pipes WITHOUT a cat due to insufficient back pressure? Toyotas are known for doing this.
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Joined: Sep 2000
Posts: 383
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my pipe does have a cat.
I'll reset the EEC and try again.
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Joined: Jul 2000
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I believe the O2 sensors can only determine pre-cat efficiency. Hopefully the reset will help out, but it may be worth checking the (lower) O2 sensor connectors. Maybe something got unhooked or a wire cut during the y-pipe install.
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Joined: Sep 2000
Posts: 7,329
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You were careful with the second bank O2 sensor you had to R&R correct? (Like not letting it hang from it's wiring, smack the sensing end, clean it with anything, etc)
That would be my guess for why you got the CEL. A big leak right at the flange might do it??? Theoretically...
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Joined: Feb 2001
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i had a cat breakup inside, sent it back to SHOSHOP and just got a refund ($120) for the old one (they have a 5 year warranty) just ask for Vadim.
CURRENT RIDE: 95 GL FORMER RIDE: 99 SVT ( www.mysvt.com) "You only live once, but if you lived my life, once would be enough." -Frank Sinatra
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Joined: Sep 2000
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Hmm...thanks for the tips.
I reset the EEC - same thing happened.
I know there's no leaks because the guy that welded it in was anally careful.
Maybe the cat is bad? I side with the O2 sensor guess - it probably got damaged during the Y pipe installation. But isn't the O2 sensor upstream of the cat, so how could it determine if the cat was operating "efficiently" or not?
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Joined: Jun 2000
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The only cat readings are done off of the pre-cats in the manifolds. Barring any leaks, i'd guess at O2 sensor replacement time.
Brad Noon '99 SE MTX 3 point oh my God H.O. 179HP/178TQ BNMotorsports Floormats, powder coating, TB optimizing, Gutted cats, etc BNMotorsports is now the preferred distributor of Contour/SVT/Mystique Indiglo style gauges!!!bnmotorsports@msn.com
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