Can a rev limiter be tuned in an A9L computer (stick car)

[fiveoh 86lx]

Curious if a rev limiter (say 6000RPMs) can be tuned into the A9L computer on a stick shift car?
Or do I have to go with an MSD 6AL/6AL-2?

[Mustang-junky]

Not sure what you are asking.

You can add an aftermarket rev limiter, but it will have to be set at a RPM less than the A9l rev limit, pretty sure it is set at 6250 from ford. When the A9l hits its rev limit is cuts fuel, not spark like aftermarket ignition boxes. If your motor is boosted you don't want to hit the stock rev limit. Get a chip, or tuner like a Moates Quarterhorse if you want to raise the factory set rev limiter.

Jess

[fiveoh 86lx]

I will be getting an SCT chip and a tune for certain
Im debating getting an MSD 6al just for the rev limiter.
It will be on a 306 with a 70mm turbo, Im assuming I should be limiting at 5900-6k?
stock block, stock cam, aluminum heads, aftermarket upper+lower.

[Mustang-junky]

6000 rpm would be a wise choice. Stock cam is a good choice too. Even after getting a tune, could help keep the bottom end together.

Depending on what your plans are you could probably just get a MSD 6al-2.

It is fully programmable, using a map sensor. Larger fuel injectors and a matching mass air meter, with the MSD 6al-2, would be a good combo for most mild turbo builds like you have planned without the need for a chip, or spending cash on dyno time.

http://www.summitracing.com/parts/msd-6530

Jess

[fiveoh 86lx]

It will not be a drag vehicle at all really, not sure if I have any use for the two step.
My buddy has a complete tune that I will be using just to get it driving of a 70mm turbo completely stock 302 TB to oilpan... should be enough to drive it for awhile, I feel I should invest in a 6al as I've lost two motors to floating exhaust valves from over-revving.......

[Mustang-junky]

It has much more than a two-step. Mainly a boost proportional timing retard. With the MSD 6al-2 you can completely program your timing curve. It will pull timing proportional to boost, and can still give you the same benifits as a vacuum advance distributor would for part throttle driveability. Unlike many basic boost retards that only pull a set amount of timing per pound of boost the 6al-2 can remove whatever you want, it does not have to be a set amount of timing removed for each pound of boost.

Jess