Lost power fitting a decat to a cobra catback

[bryan1993]

Iv read some other threads on this but i cant find anything concrete. I fitted my decat pipe the other day and i immediately noticed the lack of power my 182 FF had. It seemed to really struggle with even going downhill and my fuel gauge hardly moved, so im wondering if it was running lean. After 2 days, i changed it back to the cat, and again, it felt so powerful compared to the decat. There were no blows at all, the only thing i didn't do was put in the second lambda sensor, i completely unplugged it as i couldn't get it out of the cat.

 

[msremmert]

the only thing i didn't do was put in the second lambda sensor, i completely unplugged it as i couldn't get it out of the cat.

You may have answered your own question there...

 

[bryan1993]

could it really be that ? i thought the second lambda was just to check the cat is working.

 

[Goodj]

It really could be that

 

[Ex-User (19928)]

could it really be that ? i thought the second lambda was just to check the cat is working.

And if it's unplugged does that check just go un-noticed, or does it run 'on the safe side'.

 

[Budgie]

and my fuel gauge hardly moved, so im wondering if it was running lean..

Best thing i've ever read on CS, right there.

 

[rctempire]

Iv read some other threads on this but i cant find anything concrete. I fitted my decat pipe the other day and i immediately noticed the lack of power my 182 FF had. It seemed to really struggle with even going downhill and my fuel gauge hardly moved, so im wondering if it was running lean. After 2 days, i changed it back to the cat, and again, it felt so powerful compared to the decat. There were no blows at all, the only thing i didn't do was put in the second lambda sensor, i completely unplugged it as i couldn't get it out of the cat.

Does the new decat contain a hole for the lambda sensor at all?

 

[bryan1993]

Yeh its got a hole for it but iv just cabled tied it out the way so the engine check light doesent come on.

 

[Chrisgti6]

Yeh its got a hole for it but iv just cabled tied it out the way so the engine check light doesent come on.

So the decat had a hole in it? Surely that didn't help either. Do it properly or not at all.

 

[bryan1993]

No obviously not, it had the bolt plugged into it.