MSD 6425 Digital 6AL Ignition Control w/Rev Control - Red

I mean these have been around for a long time and have been proven to be worthy.

Works as it should

As described

I received DOA MSD control boxes from Amazon, however the third box I received finally did the trick! At first, I believe it was the installation or how my car was pre-wired, however after calling MSD and troubleshooting with them, I was convinced it was the MSD box. I have a smoother ride, more power/torque felt in the low/mid range, starts easier and faster (it already started great, but you can feel/hear the difference with the digital 6AL). Gas mileage, surprisingly, increased. Well worth the investment. My car is a 1973, Datsun 240Z with triple weber carbs, headers, and pertronix 1 elec. ignition. Please note I changed my Pertronix Coil to an MSD coil during troubleshooting before realizing the Box was the culprit, so not sure, but I doubt if the Pertronix coil is compatible with the 6AL.

Quality Duraspark ignition upgrade for my 1988 Jeep YJ Wrangler 4.2L. Lots of YJ owners go with an HEI distributor but I preferred to keep my original Duraspark distributor and use the Digital 6AL MSD Ignition because it is much better quality with more features and benefits. Some of those include, multiple spark, built in adjustable rev limiter, powerful spark at higher RPMs, lower voltage needed for cranking and extras like the capability of later adding the Adjustable Timing module if you find the need to retard/advance on the fly. If you’re really serious about your Jeep and want a top notch ignition, look no further the MSD 6425 is the perfect box for your ride.

I've installed these in a few of my Porsche 911s to replace the old capacitive discharge systems of the 60's and 70's. This is a great product, I've never had one fail even on my race cars. The improvement is noticeable; easier starts in all weather, smoother idle, slightly snappier throttle response. The kit comes with little odds and ends to make installation a breeze.

I have to say, This is a very good product.Install is easy. My car starts easier and runs noticeably better at idle and through entire rpm range. My only prob is that I can't change my rpm limit without a ecu reflash. This rpm limiter will work on older cars. I haven't tested it out to see if it will cut at a lower limit than my stock one for s***s n giggles to make sure it actually works. Besides that there are no issues.

I installed this in my 98 ram 1500 318 before install i had a slight timing issue my tdc (top dead center) was close to 0 almost every time and the idle jumped from 585 to 686 i did plugs wired cap rotor and still nothing....i changed my coil with an accl coil it greatly helped but not perfect, then i saw this bad boy bought it and the adaptor for the mopar coil.. wired it up in about 2 hours or so set the rev limiter (very important you get the ones with a rev limiter or u may damage your engine) and fired it up instantly noticed a stronger start and an increase in acceleration and torque probably the best mod i have ever dont tho this truck excellent part

Muy buen producto recupera entre 10 y 15 caballos, las conexiones simples y de muy buena calidad vale la pena la inversión para actualizar el encendido de un clasico

MSD still going strong - replaced my old MSD ignition with the new - and it works awesome.

Works well msd best product

solo funciono un poco mas de un mes y fallo

no funciona el encendido electronico y no se donde hacer la devolucion Me pueden orientar por favor?