I am havign a bit of a decision on which would be better and have heard many neg things about accel on the fourm. and then I have also heard about the msd a6 box. but there is also a coil by msd PN 8662, a direct replacement for the orginal OEM coil on a 2.8 engine. What have your experiences been? I want to hear the good bad and the ugly..

The MSD coil is a better coil and it's cheaper too. Many people have had problems with the Accel coils including me.

Get the MSD.

------------------

what was the problem with the accel? and which one(MSD)do you have? also one thing that the MSD site is missing is tech notes on what the voltage outputs are. wonder if you can assist with a few numbers?

it just your choice. Personally I used the direct replacement from Accel with no problems in 4 years/100K. I hear good and bad about both. It dont break down even at 7000 RPM for me.

i have the accel one bolted to my firewall, its not the direct replacement one... its the one with the grey plastic body and heat sink fins. haven't had any problems with it in 5 years but can't really say that its better than stock :S

I just installed an MSD coil in my 88 GT. I have noticed quicker throttle response. It also pulls much cleaner in the upper rpm range compared to the stock coil.

I don't think you really need a MSD 6A box on a stock engine. They do work great on motors with radical cams. I have had no problems with any of my MSD products.

Rick 88

Put an msd coil in and my car started to occassionaly just stop running. Thought it had been a long time since ignition module and pick-up coil were replaced. I replaced the module with an accel unit and the car would'nt start? Heardthat ac/delco replacements were the most dependable so put them in and the cars improvement in throttle response was astonishing. My module apparently had been weak for a while and adding a strong new coil overloaded it? Ac/delco and msd are very strong together in my 87gt 3.4 hope this helps

Here's a little tip - a hot coil gives you no advantage over a stock one unless you're using a capacitive discharge ignition system. If you're using a CDI, then the coil can make or brake the system. Even though the Accel and MSD coils may advertise 45,000+ volts, you won't get that kind of spark with a stock ignition system.

Both the Accel 300+ coil and the MSD Blaster are good coils. I've used both and not had any trouble from either of them. If you have to upgrade your coil, the MSD is easier becasue you can get a model with the GM correct plugs on it - you just unplug the old coil, and plug in the new one.

If you're not going to install a CD ignition system (MSD, Accel 300+ or Laser Shot, or Crane Hi-8) you don't really need a hot coil. A new OE unit will work just as well.

AH, good call. ok here is what I did today. I replaced the pickup coil and the modual ac delco. Decided to go with the MSD gm coil. I hope that this helps with gas milage. I was anticipating that the modual was old so why not change it. I guess I should see what happens next. I am keeping track of my milage also noticed that the exhaust smells better. weird.

I put the MSD GM Blaster coil on my 84 in Feb. First one was mounted in a position I though was cooler but the coil failed after a month.

A second MSD was mounted in the stock location and has been there since March.

I felt a difference in pick up once the car hits 3,000 rpm's.

I've never used the Accel coil, however have a friend who has had one fail on the 2.5. I bought the GM replacement MSD coil and the 6A box a few years back and installed on my 84. I then moved them both to a separate car, and are now paired together again in my 86GT. I haven't had a single problem with either one, I'm going to state that I've noticed a significant gain with them either.

Note, I did break of that little 'locking tab' on the coil, and the darn wire kept coming off, that was easily remedied with a zip tie. So maybe I did have 1 problem

There were lots of problems with the Accel direct replacement GM style eCoils and as many failures. Few lasted but most failed.
I had an Accel on my 87GT for about 1 summer and it failed. Replaced it with the MSD eCoil and it's still going strong after two years and a new engine later. I am not confortable with the quality of Accel coils or ignition modules.

------------------
87GT 3.4 Turbo Best 0-60 5.2 seconds
http://turbofiero.fierojoe.com/turbo.htm

Wow, I was driving around and I have noticed a nice difference. There is a nice little gain in the upper rpms and some of the farting noises that Fiero's usually make after reving have gone. I may think it is giving a better spark to burn the fuel. I have also replaced my plugs with ac del's today. I t seems to have made things a bit smoother in the engine. I am still chasing down a noise in the radio though. Have to visit local yard for 86 gt I have seen there. mostly parted out but I think the antenna is still there. most everything else was gone Thanks for all the help. keep posting the differences you have had with accel or MSD.