Has anyone seen idle improvements with MSD ignition and after market Cams.

I got a Lingenfelter 74219 cam and am wondering if a MSD ignition would smooth out the idle a little more.

 

I've used them many times. If you current ignition is in good working order you'll probably never notice the difference. If your current ignition is screwed up/worn out you'll get an "oh, wow!" kind of improvement.

Idle gets smoother but by such a small amount you'll wonder if you're imagining it. You'll pick up some mileage for sure. A full MPG isn't uncommon. WOT performance won't feel any different to the seat of you pants unless, like I said, your stock ignition wasn't up to par.

 

I've got an MSD 6A and this post is right on the money The engine idles better or HMMM am I imagining it? Gas mileage is definitely better. If you look at the spark with a test plug you will see a marked difference in spark intensity like X 10 better, but it did not make the difference you may be looking for. It did increase the wow factor among some who see it sitting on the firewall, but that doesn't make the car any faster.

 

Two years ago, my MSD 6AL took a crap, and while it was off the car, I ran my quickest time without it...Go figure!

 

The msd box seems to smooth out a rough idle on all the cars I have installed it on. The al box w/rev limiter gives some piece of mind. No proven et gains on my stuff though. MSD will ensure you keep fresh ignition parts on your car. It will find a weak part and kill it quickly.