Anyone care to take a look at these and tell me if there is anything to be worried about. They came of my 93 w/ 60K miles on it, this is the first time I've changed them and I have no idea when the previous owner last did them. Left to right they are L1, T1, L2, T2. TIA.

 

Brown is ok, Black it's rich

 

er im confused. you say black is rich, but im running intake, dp, and catback with the stock ecu and mine are always black with a little brown, I got a pettit ecu in the mail... also the car likes to do small backfires between shifts and bigger ones if i let off the throttle over 5k rpm. im still running the stock clogged *** cat until I get my ecu.

 

do a google search for spark plugs and you'll get the info

 

Looks like two of them have a little whitish color around them Good thing you got that Pettit ECU. I was running the same setup before I got my G-Force unlimited ECU and my plugs had whitish on it just like yours. Now they are black and brown.

 

Thanks for the help guys.