msd ignition for gen III for FI
you have 8 high output coils. EIGHT.
the coil wires are 1/4 the length of conventional wires.
theres no distributor gap to suckup power.
there are guys running insanely deep into the single digits on over 2bars of pressure on 100% stock ignition parts.
MSD would LOVE to have a chunk of the growing LSx market, but unfortunately for them, our ignition systems already kickass better power-wise then anything they make for conventional ignitions..
your money is better spent elsewhere.... thats why noone ever replys to the MSD threads except to talk crap about what a waste of money they are.
i havent seen any proof to back these claims, but then again, 98% of the guys here are not close to maxing out the stock coils... so its not like there's a bunch of people who could see the diff..
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Now I have a Delteq setup on my LT1. It uses the Northstar ICM and 4 coils in a waste-spark setup. I have a farily agressive cam in my 383 LT1, and it tends to cause quite a bit of unburned fuel to go straight out the exhaust at idle due to overlap, which you can easily tell by the smell of the exhaust.
Now, I added a MSD DIS-4 Plus ignition system, primarily because I am supercharged, along with a set of the coil pack adapters and a set of MSD coils. Quite expensive overall, but I felt that having the 'extra' voltage can only help matters under boost.
One of the biggest things I noticed was due to the multiple sparks produced under 3000rpm the car idled MUCH better and had a greatly reduced idle 'smell', in that more of the mixture is actually getting burned and less 'unburned' is going out of the exhaust. I believe the major factor in that is not so much the 'hotter spark' but the increased spark dwell-time created by a mutiple sparks. I believe it fires for a full 20 degrees of crank rotation.
Just adding a data-point here for reference.
Also, don't the MSD coils have multiple-spark built into the coil themselves, thus the justification as to why the coils themselves are soo expensive?
If that is the case, then I don't see a reason for an ignition box, unless you want the timing control there over the pcm, and just see that a set of the coils are really what is advantageous for both a hotter spark and multi-spark capabilities... Or, did I miss something?
Last edited by 98turbls1; Dec 20, 2005 at 09:23 PM. Reason: gramatical error
I have the coils and they are multi-spark.
Smoother running engine
A little more torque
Lots more throttle respons
Less fuel smell at idle (especialy when cold)
I have a bolt on car and I am very happy I installed them. Once you have them, you will never want to take them off.
Thanks JA
on a
That's what I'm trying to get through to the other people on here...I'm not saying that they are our saving grace but I would not discredit them due to the lack of testing...If they are kept to the same standards as the rest of MSD equipment they will be well worth their money...I'm up to try the ignition box just out of curiousity to see if it does have an effect that is noticable...I have to wait until I get out of the little sand box...Aka hell on earth..






