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MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter

MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter

MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter
$ 331.17

Score By Feature

Based on 81 ratings
Value for money
5.24
Mileage
4.64

OveReview Final Score

How Our Score Is Calculated

Product Description

The housing, digital circuitry, and performance are all completely new
2-step rev control built into the unit - via rotary dial
With up to 135 m and 535 volts, the output is higher
The trigger can be triggered by a Hall-effect or a point or by a mag pickup
A digital control system manages the process efficiently

Questions & Answers

If I connect this harness to harness 8876, will this work on my 93 S10 Blazer?

Hi there, I think

Is it possible to install the MSD 6AL- A msd 8239 coil is installed in my 1998 Dodge neon. Does it have a coil for my car?

They were meant to work with a distributor, so I would say no

Selected User Reviews For MSD 6421 6AL-2 Ignition Control with 2-Step Rev Limiter

This product is good! We put a 94 Ford GT in it
5/5

Compared to a couple months ago, I've noticed such a difference in spark performance, and also replaced the spark plugs at the same time. Moreover, the rev limiter works on this every time, my car now shoots flames, and I highly recommend any MSD product, but this 6AL-EX is still the best. I would definitely buy another of these for my other vehicle as the instructions are thorough and show wiring diagrams for many different setups. Works every time you turn.

Marlee Coleman
Marlee Coleman
| Jul 29, 2020
This is a MSD 6AL-rated product In a nutshell, It's hard to believe but I got the MSD 6al2 box for a super low price compared to where everyone else gets it
5/5

Although the first one I ordered did not work correctly, another one was quick to be shipped There's nothing bad about this device! Problem is, only one thing is wrong. One of the features it has in common with MSD is that it runs about 200 RPMs slower than it's You can set the rev limiter to stop at 800 RPMs if you choose 1000 RPMs. I gave that example as a purely hypothetical As of now, the car is doing well. It gives off fire when i rev it to 4000 RPMs on the 2step. The chances of this happening if your car is bone stock are exceedingly low. There are no catalytic converters on my exhaust system, just a straight pipe.

Memphis PRITCHARD
Memphis PRITCHARD
| Nov 12, 2020
One owner of a 1994 Toyota MR2 enjoys the car
5/5

My favorite part of this box is the label! To go with my 1994 Toyota MR2, I bought this item. In addition to the 8910EIS tach adapter and SS Blaster Coil, this set includes 0 NA. I felt a noticeable difference in the handling of my car when I installed these I found that she (my car) started immediately, ticked over nicely, and improved When I wide open the throttle (low rev range) she has more pull and a more responsive feel, and she gets to where it wants to be more quickly. In addition, I've observed that even under troublesome driving conditions, my fuel consumption has improved. The boxes were mounted behind the passenger seat (left hand side on UK cars) and the wires were fed through the firewall through the large rubber grommet The box has been described as being noisy by others, but my honest opinion of those observations is that it's really just a small ticking noise synchronized There is nothing wrong with it and there is never any reason to complain. Having driven the box for a couple of thousand miles and thrashing it to finish it, I can say that the box has performed and has proven its value. My disappointment was that I could not purchase the programmable box through Amazon (same model with programmable feature). By moving to the UK, I would have been able to adjust my ignition via my laptop leaving it in the US would have been impossible. In spite of that, with a little adjustment and advance to my mechanical timing and by using 99 octane fuel from my local supermarket, I've 'upped' the performance noticeably and quite enjoyable )

I have saved myself from overdriving by using the rev limiter. Almost a mini launch control feature is created with the two step function as well, which I also like very much. MSD could do with some fine tuning to make their customer service more friendly, but it has been nothing but a great experience dealing with them for an ignition coil set up.

Lucille Burch
Lucille Burch
| Jun 20, 2021
A defective product
3/5

I received two, installed them both, and they were all defective. I returned them both, and am waiting for a.

Maliyah POWER
Maliyah POWER
| Mar 31, 2021
You can now control your ignition for instant power boosts and increase your system's efficiency, with a simple installation! Quite simply, Microsoft has led the way when it comes to distribution technology for so long, thanks in part to the fact that it has become the best
5/5

Their distribution technology is fully adjustable, displays real time data, and is compatible with most As a result of the addition of multiple sparks to the technology, you will have access to your entire engine after installation. You can request technical support from MSD, and you can expect them to reply quickly if you need help with The managed stand alone unit provides you with lots of awesome features
- A type of LED code system that lets you know if your charging system needs to be replaced before it becomes a problem, when it has been over charged, and when it is working properly
- By using ground fault protection, you can prevent any damage to the unit resulting from faulty wiring or an incorrect installation. Please note
Combining the MSD Blaster coil and the MSD Blaster can set the 30,000v spark to up to 40,000v! You can use it to complement your high performance fuel setup. Across the full power band width, you can feel a power increase. In my other vehicle, I use a 2006 coil system that burns fuel better than my 1993 coil system. This is absolutely amazing to me. If you're serious about your performance build, you can't go wrong with this little sucker.

Maia Pearson
Maia Pearson
| May 18, 2021
The msd box for another new device has died
3/5

I received the MSD box and hooked it up. The car ran 5 times for about two hours while tuning the car, and then the box died. I have installed these many times, some work, some don't, so I was given another junk one.

Angelina Little
Angelina Little
| Jun 15, 2021
It can be programmed to run at any time
4/5

The only thing that would make it better is USB or HDMI. It's a bit of a pain to use the data port.

Caleb Joseph
Caleb Joseph
| Jul 09, 2021
We give this review five stars
5/5

I'm very happy with how well it works and how easy it is You are now prepared for the race.

Amari Pearce
Amari Pearce
| Nov 17, 2020

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