estevanflatlander
Active member
just installed a timbersled clean air intake on the 08 d7 rmk, only other mod on the sled is the "thing" can. instructions says shouldnt need fuel remapped but to check to make sure. what color should my plugs be? on the new set of plugs i tossed in they came out a greyish color after a wide open pull, threw in a dirty old set of plugs and they came out alot cleaner than when they went in. they all have a greyish,light charcoal color to them. also the pto side cyclinder when i removed the plug was smoking out the plug hole. any ideas? this sled is really getting the best of me lately.