when useing msd 6al on the leading only,can and will it be safe to use the revlimiter

 

Sure, but it won't limit the trailing, which won't insure the engine from reving past the set limit on the leading.

 

so in other words it wont limit the rev you set????

 

You can add a 2nd rev lmiter for the trailing, not sure if you need one for each trailing plug, or disable the trailing entirely. You'll need to make some wiring changes since the tach and fuel pump are tied into the trailing.

 

i guess that won't matter because i got an aftermarket fuel pump and tac...what will happen to the performance if i dissable the trailing????

 

 

I'm not sure if it causes engine damage, but I have the 6AL on the leading with the 8500 plug. Basically, when I hit 8500, power loss is dramatic and sudden. Shift.

Haven't had a problem in 5 years. I don't hear detonation, it just drops power.

 

you think it would work with a 2 step...for launch/of the line

 

I don't think so...you'd need the 3 box setup I believe (1 L, 2T)

 

you only need 3 boxes on 2nd and 3rd gens because of the waste spark,i am using 2 6al boxes,a 1980 distributor,and 2, 2 step modules,that way i can control both leading and trailing

 

Thanks for that!...and I think I do have one of those dizzys somewhere!

 

is that 1980 distributer points???is that why they call it dizzy??

 

no points,i use the 80 dist because it uses a harness that plugs into ignitors on the strut tower,unplug it from the factory ignitors and plug it into the 6al boxes.

 

Disabling the trailing will make very little difference in performance. Trailing spark helps clean up emissions more than anything else.

 

I got a 13b 6port with a 48 ida, headers,and a msd6al with a 2 step.what would be an ideal launch rpm pill and rev limit pill?this car will be raced occasionally just for fun.

 

I'm thinking, 7800rpm would be a nice top rpm limit, and 4000 should be fine for launch because it will be somewhere around peak torque.

 

Do I have to cut the red and blue loop for the revlimit to work?

 

Setting the rpm launch limit is full of variables, hp, tire size, track conditions/grip level, gearing. It will take a bit of testing and one setting won't be valid for every race. Testing between 4-5k would be a good place to start.

 

well my 2step is not working. I have a 5000 pill on and the car still revs??

 

Disable your trailing ignition and see what happens.

 

yes it works!! But the positive and negative connections on the trailing coil is arcing across . What to do ? Dissconnect

 

Yep, that's the easiest way.

 

thanks alot guys!so are you sure it's ok to run just leading.?

 

running just the leading should be fine.
i ran my car for a couple of days with out the trailing (waiting on new plugs) and it ran fine. cant really tell the difference in performance either.
hehe i run a single msd box for leading.

 

http://www.amazon.com/Pertronix-600-.../dp/B000CC9DAY

Any thoughts on this item to use and what cylinder setting would we use?