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FED 387 · 08-27-2008, 09:30 AM

make sure you run a ground wire from the head to the block ----a ground wire from the engine to the chassis ----a ground wire from the MSD DIRECTLY to the battery and also the chassis ---Check all your grounds make sure they are CLEAN--no rust, paint crud etc. These things get real finnicky at rpm can have you chasing your tail for months See if this helps--also try another RPM chip see if it has not failed they do go bad every now and then-Swap out YOUR MSD box with another box you might have a bad one-

Comp 387-

08-27-2008, 09:30 AM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,355 Likes: 339 Liked 282 Times in 152 Posts	Re: High Speed Miss? make sure you run a ground wire from the head to the block ----a ground wire from the engine to the chassis ----a ground wire from the MSD DIRECTLY to the battery and also the chassis ---Check all your grounds make sure they are CLEAN--no rust, paint crud etc. These things get real finnicky at rpm can have you chasing your tail for months See if this helps--also try another RPM chip see if it has not failed they do go bad every now and then-Swap out YOUR MSD box with another box you might have a bad one- Comp 387-