Opti Spark Choices
TECH Veteran
Joined: Dec 2008
Posts: 4,147
Likes: 62
From: Little Rock, AR
The adjustment screw is one of the drawbacks of the MSD, IMHO. They should have left it off. I've seen numerous threads over the years about the screw being out of whack or not working properly. The difficultly is determining just where the "zero" point is on the adjustment without a frame of reference.
Thread Starter
Teching In
Joined: Jan 2012
Posts: 6
Likes: 0
I would agree with you. Nice thing is it converts it to a vented setup. Bad thing...they aren't air tight. Leaked badly where the wires come through. We sealed it all up before putting it in though.
Shbox I'm going to assume you run the LT1 swap website. A big thank you for it. The car is actually an 87 Iroc with a 94 LT1/4L60E so we used the site a lot. Put the ecu in the stock location under the dash so it was a full on custom wiring job and your site helped a ton.
Shbox I'm going to assume you run the LT1 swap website. A big thank you for it. The car is actually an 87 Iroc with a 94 LT1/4L60E so we used the site a lot. Put the ecu in the stock location under the dash so it was a full on custom wiring job and your site helped a ton.
