I have been searching for a replacement cat for the '03 SSEi for about three weeks now.... I have a HUGE headache right now. ALL of the muffler shops I have called in my area ONLY sell factory direct-fit cats, and want AT LEAST $300 to install I am at a loss. My eyes are not the greatest for constantly searching on the 'net for this stuff, it gives me a very bad headache.

I have found this though... is ONE of these the one that will work in the '03 and not have any problems?
Magnaflow 91000 SMALL OVAL, and 91000 SINGLE SENSOR
Vehicle: 2003 Pontiac Bonneville .. .what about one of those?


I hate this... I have even called the Magnaflow site and they said they can't help me

someone help quickly please before my head explodes

whats the pipediameter and just order a universal in that size.

Take a look here:

http://www.discoweb.org/warranty.htm

www.performancepeddler.com. I'm pretty sure I have a discount code Make sure that you get weld-in because those bolt ins suck, not to mention hi-flow... A good honest welder should charge you 40-60 bucks to weld it in

Pretty sure this is it, correct me if I'm wrong:
http://www.performancepeddler.com/de...CT_ID=MAG94036

I know that I can order a 2 1/2 inch and weld it in, but I don't know if the O2 sensor needs to be relocated or not. Right now, the one after the cat is about a foot down from the cat.... do I just leave it there and order a cat without the O2 bung?


also, I know about the 80K mile warranty on the cats, but our '03 has 125,000 miles on it :(

That one looks fine to me Petraman, but like I said above, what about the O2 sensor, where does it go :?

you can leave the sensor there, it will be fine...

or you can just get an INTENSE PCM that takes the rear sensor out..

hmmmmm, tell me more are you saying that the INTENSE PCM eliminates that and I don't have to worry about it anymore? So I can just go and get a regular universal 2 1/2 inch cat and not have any problems and other benefits???


<<<< off to check out INTENSE

yes,

Disable rear O2 sensor DTC'* (+$10.00)

I see... so hopefully, all said and done, we could get the PCM, disable that DTC, and get the new cat and install it for under $250 I hope.

what other benefits are there with the standard PCM? harder shifts? do they actually increase HP and TQ at all? not exactly deciding factors, but still curious.