Ok i tired searchin for a answer put found none. i was checking my spark plugs the other day and the bottom, ends of my spark plugs were white. I just read a c-speedracing.com how to about compression testing and it says if my plugs are white it means im runnin lean. I have a 94 ls, i took my air box cover off and i have a catback exhaust with 2.25 piping. I didn notice a lost in power but i just want to know what can i do to fix this problem thanks

 

get a fuel pressure regulator and gauge and jack up the pressure a psi or 2

 

sorry for not repply quickly no internet in dorm lol my plugs are real old i dont know how old they are came with the car when i got it

 

First thing I would do is change the plugs and check back in a lil while and see how the new ones look.
Mike

 

i like the dyno ideal but im up in tally now. what the difference between the cheap plugs and the expensive spark plugs