Don't know right off, I'll do some checking. Hey why I got ya here, would a bad MSD 6AL cause spitting and sputtering in the higher rpm's? I have disconnected it and am using the stock coil and it runs great at low rpm's but step in it and it goes to backfiring. Kinda wierd, cause setting still . in neutral , it'll reve up fine , but under load is backfires. Do I need to install a new MSD box? Kinda hard to describe in a note. Kinda acts like the timing might be to far advanced? Posted on 11/6/2009 at 09:51:13 AM by JRuggs