MSD 6421 6AL-2 Ignition Control

I love this box! I purchased this for my 1994 Toyota MR2 2.0 NA, along with the 8910EIS tach adapter and SS Blaster Coil. After installing these, my car had an instantly different feel - she (my car), started immediately, ticked over nicely and improved driveability in all rev ranges. In the low rev range she has more pull and a more responsive feel, and when I'm booting it (wide open throttle) she gets to where she wants to be quicker... I've also noticed an improvement in fuel consumption, even under extremely spirited driving conditions.I mounted the boxes behind the passenger seat (left hand side of the car in the UK) and fed the wires through the large rubber grommet in the firewall with the vehicle harness. I've heard others talk about the box being noisy but my honest opinion of those observations is that it's really just a small ticking noise that is sychronised with the tachometer... it really is minimal and is certainly nothing to complain about.After a couple of thousand miles and some none stop thrashing, I can say that the box has performed and has made me feel that it's worth it. I was disappointed I couldn't purchase the programmable box (same model with programmable feature) from Amazon.com to the UK as that would have enabled me to fine tune my ignition via my laptop. Nonetheless, with some adjustment and minor advancing of my mechanical timing and the 99 octane fuel that's available from the local supermarket, I've 'upped' the performance noticely and enjoyably so :)The rev limiter function works well and has saved me pushing my car too far into the red... and the two step function has almost created a mini launch control feature which I also like a lot...MSD customer service could do with some fine tuning to be a little more friendly but going with MSD for a performance ignition set up has been far from a bad experience.

MSD has been the leader in distribution technology for so long for one simple reason, they are the best. This system is completely tunable, shows real time data, and is compatible with many of the data logging clusters. The multiple spark technology has become even more advanced, and you will get the full use of your engine after the install. MSD's tech support is great, they get back to you quickly with any questions you may have for your application.This stand alone management unit has many awesome features-LED code system lets you know when your charging system is going out before it becomes an issue, informs you of an over charge, and shows when the system is functioning correctly- Ground Fault protection prevents any damage to the unit from faulty wiring or incorrect installs.- in combination with the MSD Blaster coil you can produce up to 40,000v of spark! It's perfect to compliment your high performance fuel set up.You can feel the power increase across the full power band width. My 1993 burns fuel better than my 2006 coil system in my other vehicle. I am absolutely astounded.If you are serious about your performance build, this little sucker is a must.

Been months now, so much better noticeable spark performance, i replaced spark plugs at the same time, and wow. Plus the rev limiter works on que every time, my car shoots flames now 😂 i reccomend any msd product, but this 6al-2 is pretty cool, with its functionality, i will definitely be buying another for my other vehicle, instructions were detailed, and show wiring diagrams for many different setups. Happy with this product. Works every turn of the key (knock knock) if you want a rev limiter and stronger spark, get this box!

Great product and very easy instalation with basic tools just as described

I ordered an MSD 6AL-2 and was expecting a new one in the MSD packaging and what I got was an open box product that had previously been used on a vehicle, the harness was altered, had butt connectors on the wires, the length of the wires was also altered.The electrical c9nnections someone made were extremely poor as well so I am concerned the unit may be defective, I will be doing the initial start up of the vehicle on 3-19-25 and will post an updated review on it.I can say for sure I will not be ordering anything from this supplier again.

Wish it had usb or hdmi.. the data port is a bit of a pain

Great product but I didn't get a chance to use it. Sold car before product arrived.

received two, installed both, both defective. returned both waiting on full refund.