Could MSD Coil packs cause this?

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08-19-2013, 05:38 PM

#11

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

Quote:

Originally Posted by slickman

I just changed out my OEM coil packs to MSD. I noticed at WOT it runs very lean now, anyone ever seen this? I think my tune may need to be redone with the MSD coil packs installed. Going to switch back to the OEM's tonight and test my theory out.

Only if 1 or more aren't firing, but you'd notice I'd think.

08-20-2013, 03:42 PM

#12

Derf00

Gentleman's Relish

Join Date: Feb 2005

Location: AZ

Posts: 13,090

Quote:

Originally Posted by slickman

First time I heard anyone say OEM was better then an MSD. I have used MSD for years and I wanted a better coil pack. My thought is, seeing the MSD is a hotter more prolonged spark, this could in my mind cause a leaner burn? Just a thought.

MSD is great for old school (Cap and rotor) designs but for COP (Coil on plug) systems they seem to flake out (as do all other aftermarket coil setups).

This is also true of the OEM TB vs aftermarket TB's If you want to upgrade your TB go with a GT500 TB or Port/polish yours.

08-24-2013, 11:40 PM

#13

slickman

5th Gear Member

Thread Starter

Join Date: Dec 2005

Location: SC

Posts: 2,634

I sent the MSD COPs back, I did like the way they the performed.. I still my go with the MSD setup cause my lean condition was not the problem anyway.

Last edited by slickman; 08-24-2013 at 11:45 PM.

08-25-2013, 06:54 AM

#14

jpplaw

3rd Gear Member

Join Date: Jun 2010

Location: RI

Posts: 690

The MSD's do work great...until they quit. I just wouldn't want anything deciding to quit on me all of a sudden during a WOT pass under full boost. Might not be pretty.

08-25-2013, 07:47 AM