Multiple spark coils..... any good?

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Jul 2, 2007 | 06:36 PM

hattitude

Thread Starter

Drifting

Joined: Oct 2006

Posts: 1,773

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From: San Diego CA

Multiple spark coils..... any good?

I was reaqding about multiple spark coils. I noticed that MSD makes a set for the LSx engines.

Do they offer any performance improvements?

I ask this because I know in the diesel engine world, electronics led to the advent of multiple fuel injections per power stroke. This led to a host of good things for diesel performance, etc.

So I was wondering if there are any similar gains to multiple sparks in the gas engine world..........

Jul 2, 2007 | 07:04 PM

FRCTony

Drifting

Joined: Mar 2005

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From: Northern VA

No.

Jul 2, 2007 | 07:08 PM

dougbfresh

Le Mans Master

Joined: Nov 2005

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Quote:

Originally Posted by FRCTony

No.

Agreed-the stock ignition for most cases is MORE than adequate.

Jul 2, 2007 | 07:51 PM

thetaxman

Race Director

Joined: Jan 2007

Posts: 16,513

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From: Official Dirty Dozen Member

for high RPM's it's great
for the street, it's negligible

Jul 2, 2007 | 10:43 PM

tblu92

Le Mans Master

Joined: Aug 2005

Posts: 5,375

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From: CA.

St. Jude Donor '13-'14-'15

I put a set of the MSD coils on my '98 heavily modded C5 and didn't see any performance gain at all--I replaced the coils because on my last dyno run the Tq & HP curves were very bumpy between 5000 & 6200 -The dyno shop said it looked like a high RPM ignition miss-The coils did eliminate the wavy curves---but so could have new stock coils too----Basically they are there just for the "bling" factor--they look really cool !!!!

Jul 2, 2007 | 11:28 PM

1965imp

Racer

Joined: Jan 2006

Posts: 347

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From: Chicago Heights ILLINOIS

I put them on my 80,000 mile car and noticed the car ran much smoother at idle I didn't notice any HP"seat of the pants" increase If you have an "extra" 600 bucks laying around go for it.

Jul 2, 2007 | 11:44 PM

edcmat-l1

Melting Slicks

Joined: Jul 2006

Posts: 3,356

Likes: 1

From: Chesapeake Va

The multi strike feature can make a difference in idle, but in a coil-near-plug/coil-on-plug application they are definitely not needed.
Ford has a multi strke ignition system on there mod motors. At least the 4.6 is. They did it because of idle issues, supposedly due to inefficient combustion chamber design.