MSD vs OEM
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Your '92 doesn't have a Duraspark ignition if it's all original, but even of it does the short answer is no the MSD alone won't make any difference to efficiency.... assuming the current system is working correctly.
Cross-Country
Joined: Jul 2021
Posts: 54
Likes: 15
From: Phoenix
MSD TFI distributors are garbage. Do NOT replace an OEM with one. I will fail in short order if it ever even works. They are not manufactured to tight enough tolerances for the ford ecm to like them in most cases.
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Trailering
Joined: Dec 2015
Posts: 18
Likes: 0
From: Fort Collins, CO
MSD Vs OEM
Thanks for the reply. I'm chasing a intermittent miss. and thinking a hotter spark will fix the issue. Just thinking but realize just find the prob. is the real test. I wish it was as easy as changing a tire. Again I know enough to be stupid. Poss PIP issue. Fuel pressure is very good. ,1500 rpm right when I'm in 4th and steady load notice the most interruptions. Eng temp normal. BY PASS EGR, MINIMAL INTERRUPTION. There this dreaded discussion. Bigger hammer but enjoy this ride to much.
Cross-Country
Joined: Jul 2021
Posts: 54
Likes: 15
From: Phoenix
Thanks for the reply. I'm chasing a intermittent miss. and thinking a hotter spark will fix the issue. Just thinking but realize just find the prob. is the real test. I wish it was as easy as changing a tire. Again I know enough to be stupid. Poss PIP issue. Fuel pressure is very good. ,1500 rpm right when I'm in 4th and steady load notice the most interruptions. Eng temp normal. BY PASS EGR, MINIMAL INTERRUPTION. There this dreaded discussion. Bigger hammer but enjoy this ride to much.
Lead Driver
Joined: Sep 2002
Posts: 9,500
Likes: 2,021
From: North Texas
I had a 6AL on my 88 F150 for years and maybe 25k. Box kicked it, it would only run the truck upon cold starts...like a failing TFI. Removed it, no issues since and no power differences I could tell. I did keep their hotter coil.
Even Duraspark II is solid, just use a Motorcraft box if it does fail and drive on down the road.
Even Duraspark II is solid, just use a Motorcraft box if it does fail and drive on down the road.
Last edited by Hit Man X; Nov 1, 2021 at 02:18 PM. Reason: Added year since I have many F150s...
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Logistics Pro
Joined: Aug 2014
Posts: 3,556
Likes: 850
Thanks for the reply. I'm chasing a intermittent miss. and thinking a hotter spark will fix the issue. Just thinking but realize just find the prob. is the real test. I wish it was as easy as changing a tire. Again I know enough to be stupid. Poss PIP issue. Fuel pressure is very good. ,1500 rpm right when I'm in 4th and steady load notice the most interruptions. Eng temp normal. BY PASS EGR, MINIMAL INTERRUPTION. There this dreaded discussion. Bigger hammer but enjoy this ride to much.
Plugs, cap/rotor, coil, maybe even new spark plug wires. Make sure they are routed correctly to prevent cross-fire.
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M S D
Cargo Master
Joined: Nov 2009
Posts: 2,190
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Funny. Aside from being ground sensitive, I've had *zero* issues with any MSD product I've put on anything. And the grounding issues were usually because I was in a hurry and got lazy. That being said, I highly doubt that you're going to see any benefit from going to an aftermarket ignition system on an engine that is otherwise stock. The Ford TFI Ignition is fairly robust, and works pretty well, as long as you use quality parts.
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