update on exhaust issues... can anyone help?

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Originally Posted by mn box s

Ok enough already! I'm not a quitter nor am I a stand by and watch my mechanic kind of guy. I'm on this forum to get advise/ help with the 3.2L Boxster as I've only owned one so far and haven't even had to take the motor out yet. There are however many on this site that have. YES it WOULD be easier to put the cats back on YES it would be CHEAPER too. I don't give a poop about that. I am interested in making more power out of what little room we all have to play with. If I have to be the pioneer that figures things out so be it. Where the hell would you be with out people like me anyway? If you don't want to help a fellow Box owner figure out a different way, fine, but don't post the obvious just to get in your .02. To the rest of you that are actually helping thank you very much!

Then you will need o2 sensors in place and working or your ECU won't know what to do. Without o2 sensors your car will go into limp mode and run lousy. Throw away the cheaters and ask edevelin how he resolved this issue. I think it took several months of trial and error but he did get it resolved. Good luck.

No reason to get hostile here. Everyone has a right to have an opinion even if it is different than yours. Others will surely read this thread and find interest in both views. Maybe we can all learn something about these cars.

[edevlin]

"Throw away the cheaters and ask edevelin how he resolved this issue. I think it took several months of trial and error but he did get it resolved. Good luck."

Try six months or so. I started out with a stock 2.7L Boxster and first put in a cold air intake and an Autothority chip and and the car was running great, no cel's. I decided to add headers and 100-cell cats and 4 new factory oxygen sensors to the car, and that is when the CEL's started up.

We played with extending the cables to the rear oxygen sensors, moved the sensors deeper into and out of the exhasut stream, moved sensor bungs along the exhaust stream, and more.

Ended up replacing 3 of the new oxygen sensors, both cats and as a final measure slightly reprogramming the threshold for triggering the oxygen sensor CEL in the ECU. The whole time the car was running great, it just kept giving CEL's. Even after all the hassle and expense, I still marvel at these engines, my little 2.7L just humms and last week it put out 210 hp to the wheels with 100-octane fuel, great fun

Ed

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