MSD 5520 Street Fire Ignition Control Box , Black

Great product and a great price 👍.

i put this thang on my JD 3020 tractor. Instant improvement. Runs much better, more power and starts WAY easier.

Update 12/9/2021 (Back to 4 stars)The unit is still working today 3 years later.25,000 hard miles on the classic.Causes of the dead ignition1. Don't put it near EMF generating devices2. MSD has a retarding effect. When running the unit the timing would be reduced by 3 degrees or so due to latency of the trigger signal. Simple fix advance it ever so slighlty to compensate for the signal delay.3. Mask the wires you clip make sure they cannot ever touch.I had the unit inspected and all was good except for the above.Update: 9/14/19 (2stars)The unit failed one year later out of warranty in the middle of an intersection. But the unit already showed signs of failure months before. After 3 months of use, the unit would cause all sorts of problems, namely misfires across the rev range and heavily misfired at higher rpms. I was sure the "trusty" msd wasnt the issue. However, when it failed today I rewired my old ingition and all of a sudden the car ran perfectly. So basically the unit had already failed after 3months. It failed right as the warranty ran out, smart msd...but not smart.So far, after a few hundred miles on highways and around town. It was installed on a 1973 240z with some 40DCOE carbs. Cold starting is a lot better with the MSD. However, I cannot have the car idle very low with all the accessories on, there is too much of a voltage drop and the MSD has trouble. Also the wires for the box are very short and not accustomed to anything other than an american V8, so for my engine I needed to extend the wires to reach the coils and dizzy. Besides all that the ignition box wiring instructions need to be followed word for word other wise the system won't work. Also works great with my Autometer tach.But so far so good! the car runs great, less fumes, better gas mileage, and low end response is great too.

I put this MSD ignition box on my 1993 f-150 short wheel base cingle cab truck with a 1988 5.0 H.O. Mustang GT motor , gasket matched port and polished stock e7 heads and the truck intake, 'wich is almost twice the size of the gt' , 2 1/2 inch duel exhaust with flowmasters, no H pipe yet ,stock gt shorty headers and the part of the the smog pump that flows fresh air into the heads hooked up , have the MSD Super Conductor wires , rotor cap and the MSD Blaster coil . Right now im running Bosch Super Copper plugs and have opened the gap to .o65in adjusted the timing a little and im getting a consistant 3 to 4 miles a gallon ,'on the hiway' better than before without the ignition box and it smoothed out the rough cold starts in the mornings too. This is a great product for my weak stock ford ignition really tied it all together . It really made the gas peddle stiffen up and much more responsive and now i have to relearn how much peddle to give it when the light turns green , i try to baby the tires , but now i keep wanting to goose it a little to feel that power i was missing . People who cant tell a difference need to make sure they have the right plug wires and a properly functioning coil , good spark plugs and the correct setting on your timing, if not the the spark cant get to the plugs ,it grounds out somewhere along the line , you can see this by turning out all the lights around you and waiting for your eyes to adjust and if your plug wires are old or the wrong ones then you will see a fire works show. This is my first after market ignition box, never needed one before the newer cars and trucks have much better stock ignitions now than in 1993. Hope this was helpfull.

as per a call directly to MSD, no 2 step will work with the ign box

Great product never had a issue

Easy to install and mount. Remove the condenser on points system it is not needed and had a negative impact on performance in my application. I have 6AL and 6 digital box on HP cars. I purchased the Street Fire to put on a 1972 dump truck used on the farm improved performance and fuel consumption.

Liked

good price, works well and arrived quickly

I bought this to replace an old Mallory unit that failed. It's not idiot-proof to install, but not too tricky. It has very similar wiring to my old Mallory- the wires have the same functions but use different colours.I had to adjust my timing (approx. 7 degrees different initial to the Mallory!) then it worked great. The multi-spark at low rpms is amazing, my car has a tuned 360 Chrysler with a very lumpy cam and it's much easier to drive now. It starts instantly, warm-up and idle are much smoother. It pulls away more cleanly- It often would stumble but now not at all. Mid-high running is no better, but the Mallory was great at that so I wasn't expecting any improvement.

This item worked exactly as needed

Le nom est synonyme de qualité

I had gone through 3 factories icm and they kept burning out and getting us stuck places I installed the street fire no more problem, also if I want to change my v6 to a v8 just need to change a pin on the side and it’s done, great product