Cat Removal - Previa 2.4gl

[P11GT]

Just wondering, if theres any downside to removing the cat, i believe there are 2 lambda sensors on the system, one before and one after the cat, will it throw up an error code??

[GT4 BOOSTER]

some de cat pipes come with pipes for the sensors to sit into , so you dont lose em took mine off me celica , didnt gain that much more power and car seems to run rich now.

[jaysback]

as far as i am aware, if it is the new shape then i believe they have a 3 cat system in them.

right nightmare.....

did think about removing them on mine but having to have a manifold made up, or at least a pair of new down pipes aswell as the main cat bypass pipe i gave it up as a bad idea.

[PAB]

Why would you want to remove the catalyst?

More power? modern catalysts do not "cost" much in power <3-5%

They have a small effect on response, but in a heavy vehicle very difficult to feel

More likely to lose mid-range torque due to tuned pulsation effects in the exhaust system.

And they do actually keep you from filling the atmosphere with nasty gases :D

[British_Bargains]

Took mine of my 1991 previ, it ran like S***t, ive put it back