Thread: ses light on after WOT

i installed my new downpipe. i have 105k miles. everything was good for a few hours unitl this dumbass sentra decided it could hang. so i beat it so i could merge and get ahead. and then SES light came on. any ideas? did unscrewing the o2 sensor and putting it in a new dp make it go bad or something? i didnt scan it yet. but i will soon. still runs great. just figured id run it by u guys to see what you think.

its not worth it at all. i did it because i wanted to make him look dumb since he was trying to show off to whom i'm assuming is his wife. plus if i can i try to prevent being behind ppl so i can go at whatever speed i want. it was a merge lane after all. and for the record i didnt floor it lol

anyway, idk the code because i didnt scan it. i'm asssuming it deals with the rear o2 sensor.

mods, known worth mentioning.

will for sure. jw if anyone right off the bat had this experience.

plus i'm pretty drunk after a wedding and figured id start something to have ppl talk about.

drove the thing without a resonator. no probs. then put a glasspack on. good to go.........

until i WOT against that sentra. then the light came on. i guess we will see

No its definately on. And tight. I know for sure the light didn't come on till after a WOT run

P0420-catalyst efficiency low-bank 1

Cheapo scan tool from autozone. All I can use for now

Faulty cat. Had the same code.
Cat has to be replaced.

http://www.grandprixforums.net/3-inc...tml#post798501

this downpipe is in really good condition. could it really be that? cmon now