the coil is awesome, I had an Off-Road MSD coil and loved it. when I added the Off-Road spark box, it also ran great... only downside is the cap & rotor did not hold up well... 20k was about it, then I had pinging problems. I also found out that the stock mopar cap & rotor worked the best.

 

I have the MSD 6T and a rev limitter and it works great. I never use the rev limiter and pull a 21' boat.

 

i found a good price on a 6a ignition and then i would just buy a new ignition coil to go with it...but you run just as good as ever without the rev limiter and towing, is it your daily driver?

 

with your msd ingition what plug gap are you guys running ? im running a .050 gap with autolites ... sorry to high jack this thread .
mineis a daily driver and it really pulls between 1700-2500 rpm.. plus ill let ya know my mpg... and a wiring harness wouldnt hurt with the install. ill do a write up soon.. on this..

 

no worries about jackin...but i wouldn't mind you doin a write up about your install...what you mean about the wiring harness for the msd install?

 

i used the msd wiring harness p/n 8873unversal , even tho in msd catalog they have a plug in harness they still dont have it in stock... i had to cut the coil wire and put ends on them which is in the wiring harness this makes the hook up of the 6a easy.(plug and play) .. and aclean look to.

 

all of that you just get out of ther catalog...well the harness that is, then just make your own connections for the coil?

 

the wiring harness 8873 i got from summit for 18.99 comes with good directions 15 min. tops to install.... comes with the connections. down the road you dont want to run the msd ingition box just unhook the harness plug the stock one back in.

 

what exactly would be the performance gain if i just went with the coil? i have a 99 5.9. also do you have to regap the plugs? right now i am running champions with the stock .40 gap

 

with just a coil upgrade no gapping is needed run stock gap..... with the msd box you should gap .05above stock so like my truck stock is .035 so i keep bumping it till you get a good burn at.045 i had a good burn and the truck runs better , at .050 runs great at 208 miles only used a half tank..
performace gain alone wont tell much but add the 8 mm or the 8.5 mm plug wires frees up the rpm a little better responce ...