i just got an 04 gto and want to no if there is any precautions when cleaning the engine?

also had a hard time deciding over what exhaust corsa/magnaflow/slp/flowmaster/borla? is there any1 that is best?

thanks.

 

magnaflow...for sure.

 

Knock sensors, at least older model LS1s, can suffer
corrosion problems if you hose down the top of the
motor, fill the sensor pockets and let it sit and chew.
I gather some later motors mount the knock sensors
elsewhere (like down on the block?). It's best to wipe
with rags, around the intake, not hose it blindly.

 

thanks for the info