Will deleting my cat converter cause my CEL to come on?Massive loss of low end?

ohio mossy oak · Apr 8, 2012

I am planning to replace my cat converter with straight pipe..Right now I have duals split after the cat all the way back(2.5in each maybe 2.25)NO muffler..Will deleting my cat cause a loss of low end?How much?Will deleting my cat converter cause my CEL to come on?

05singlecabHEMI · Apr 8, 2012

Yes you will lose low end, and yes it will cause the CEL to come on. I wouldnt do it. Not worth the loss of power. But there are simulators out there that can get rid of the CEL. Basically it tricks the computer into thinking you have a cat.

KGBIGCOUNTRY · Apr 8, 2012

You can do a nonfouler on the o2 for the light to bot come on. If your just gonna street it leave the cat on.

ohio mossy oak · Apr 8, 2012

KGBIGCOUNTRY said:
You can do a nonfouler on the o2 for the light to bot come on. If your just gonna street it leave the cat on.

Truck has 130k miles..And probably a leaking plenum gasket ..Would those two things contribute to a short cat life?This is my concern?.

XCRacer236 · Apr 27, 2012

If you already took care of this, sorry for the late reply. New here and going back through old threads. Getting rid of the cat does NOTHING. I have a 98 318 and I had mine cut off, gutted, then welded back in. No loss in power, no loss in MPG's, and no CEL. Been a year and a half.

$150 to gut it was a hell of a lot better than putting a new one for $350..

talon6 · Apr 27, 2012

yes you will lose some low end yes you will probably get a cell. i have heard of a couple tht didnt get a cell, but 99% do. google fastman o2 simm. thats what i have. still have to run pre o2 simm.

Mopar1973Man · Apr 27, 2012

I'm also running a gutted kitty with factory muffler and no problems here... I'm getting 16-17 MPG and good power too... No CEL lights and on O2 sensor issues...

Will deleting my cat converter cause my CEL to come on?Massive loss of low end?

ohio mossy oak

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