is there any dissadvantage of not running with sims in the rear 02s

right now i have no cats b/c of teh long tubes, i do not have any simulators

i have had a problem where i am either not getting enough spark or im getting too much fuel causing a missfire and plugs being fouled,

could no sims in teh rear cause my computer to act funny and do this?

thanks
bobby

 

No, but the fact that the SES light is on continuously may be masking other problems that might set an SES.

 

i realize that , i had the codes checked and i get random misfire code p0300 or whatever teh code, is it seems to only happen on teh left bank but i will get more info as soon as possible im just wondering if in someway i damaged teh opti


are the headers causing my car to run rich? do u really need a tune after headers?

 

The first thing I would do is check your plug wires.

P0300 is a random misfire code, If you have access to a Tech 2 you can go and lookup previous misfires and it will tell you how many misfires each cylinder has( one of the cylinders would have hundreds and the rest would probably read 0).

Unfortunately it doesn't say which cylinder it is in the code like ford. For ex. on a ford PO301 would be cylinder 1 misfire.

 

Bobby,

My first guesses would be leaky Header Gaskets and/or a burned plug wire(s). That would be my starting point.