SES light and High flow cat's

[Deuce Bigs]

oh yeah and to anyone who hasn't seen. with that setup i pulled 180rwhp with 2degrees of spark advance, 14.1 degrees of knock retard. that's more then most V6's with ICB and no knock, full timing.


ICB = intake and cat-back

[Night Rider]

<blockquote>quote:</font><hr>Originally posted by MidLifeSpeed:
I've had a 3" hi-flow cat on my ride since Feb 01 and have never thrown an SES ! Running with original O2's ... not simms. I know of no reason for the hi-flow cat to throw SES unless maybe the cat doesn't have enough catalyst volume for the flow ...<hr></blockquote>

I can see what you mean.

When i removed my stock cat for 3" magnaflow, i never threw any codes for like 6 mths. Then i switched to a 2.5" catco when i got my b&b cause i wanted 2.5" all the way through for more torque down low. 2 mths. later my ses light came on & has come & gone since. Duece scanned it & said it was the 02 senors in bank 1 (behind cat or driver side exhuast manifold).

I'm gona replace the 02 sensors first. if that doesn't work then i'll see if i can buy a used stock cat & cut the reducer like duece suggested. I'll post after i replace the 02's.

[veesix]

I have had a 3" cat for allmost 2 yrs now and never had a problem with the ses light untill last week. So I guess it was just luck of the draw. [img]smile.gif[/img]

[camaro_zach]

my 2 cents

i have a complete 3" exahust system and a high flow cat, my car was doin the ses light on and off periodicly, but it hasnt come on in over a month. Seems like the comp just had to adjust...

[shortdog273]

It makes me think twice about getting a high flow cat if there is no solution for SES light. I can't be driving around with women in the car with that light on man!! LOL What are the 02sims and where can I buy em??

[jamie]

i have a 3" hi flow cat, and i don't have any SES light. original 02's, too. i guess it is just hte luck of the draw on that one. good luck with whatever anyone decides to choose.