does removing the catalytic converter add HP? Options

[nate95]

Hey i was just wondering if i were to remove the catalytic converter if it would add any horse power? or what about getting a "Y" pipe before the cat. so i can still have the cat. but have it go straight out when i want to race?

[malpaso]

And what about oxygen sensors (lambda probes). I think that exhaust valve timing is modified by lambdas...

[Bitter]

And what about oxygen sensors (lambda probes). I think that exhaust valve timing is modified by lambdas...

theres no valve timing going on with your motor. (assuming its the stock 7afe)

valve timing is controlled by rpm, oil pressure, and on some engines the ecu is what opens or closes the solenoids that that move the oil which moves the cam(s).

as for what critera move the cams when its an ecu descision its probably RPM and Throttle position, i doubt that oxygen sensors have any input in that.

This post has been edited by Bitter: Mar 30, 2006 - 1:46 AM

[malpaso]

And what about oxygen sensors (lambda probes). I think that exhaust valve timing is modified by lambdas...

theres no valve timing going on with your motor. (assuming its the stock 7afe)

valve timing is controlled by rpm, oil pressure, and on some engines the ecu is what opens or closes the solenoids that that move the oil which moves the cam(s).

as for what critera move the cams when its an ecu descision its probably RPM and Throttle position, i doubt that oxygen sensors have any input in that.

I thought that oxygen sensors controls overrich mixture so combustion process also and finaly (somehow ) timing...

thanks for explanation

This post has been edited by malpaso: Mar 30, 2006 - 2:25 AM