Darracq

iTrader: (1)

I have the msd controller and the engine is breaking up real bad around 5500 rpm maybe tach is off, i shouldnt have any valve float at 5500 should i? could a lean misture cause it? How about to much timing, #1 pin is 35 at 6100

KECHME

What are you using for coil packs? If they are MSD's also , I would do a search on this site. I know there were some folks that had high rpm ignition issues that were traced back to those coils.

Darracq

iTrader: (1)

I am using stock coils.

KECHME

Damn , well that flushes my theory down the toilet. I also heard about some peeps having problems with that MSD ignition box as well. Do a search , I bet you'll come up with something. Might also , think about adding another ground wire/shunt from the body to the block. I had the same problem on my LS1 powered race car and cured it in this manner. I have the limiter on my car set at 9100 , and lets just say I've inadvertently "tested" it a few times .

Darracq

iTrader: (1)

I will try that. I am waiting on msd to call me back, havent found much on search but still looking
Thanks

S10slepper

a friend had the same problem.(tj88z28)on here
turned out the high side limiter was set at 5500 from the factory.
he used my msd hand held controller part#7550
and rest the limiter. problem solved.


for what its worth, i have the same box 6010
and i didnt have this issue