MSD 2-Step Launch Control Installation

[Ruckus46gt]

how come you went that way instead of just adding it to your sct tune? If you dont have sct then nevermind just figured your car was tuned with sct

[4Jenna]

how come you went that way instead of just adding it to your sct tune? If you dont have sct then nevermind just figured your car was tuned with sct

Pull spark instead of fuel.


I think atleast, he can only pull fuel with the SCT.

[BurnTire]

Pull spark instead of fuel.


I think atleast, he can only pull fuel with the SCT.

That is correct the PCM pulls fuel and hitting the stock limiter is somewhat violent. I use the SCT two step and don't like it.

[Ruckus46gt]

That is correct the PCM pulls fuel and hitting the stock limiter is somewhat violent. I use the SCT two step and don't like it.

gotcha its been a while didnt know which way sct pulled.

[soap]

It is my understanding that the SCT software pulls all fuel when using the neutral rev limiter, so instead of going into a lean condition there is actually no combustion at all.

So, stupid question, but if that is the case, how exactly does the motor continue to turn over??

--Joe

[BurnTire]

It is my understanding that the SCT software pulls all fuel when using the neutral rev limiter, so instead of going into a lean condition there is actually no combustion at all.

So, stupid question, but if that is the case, how exactly does the motor continue to turn over??

--Joe

It seems to pull the fuel in a cycle. The engine just bounces around at the limiter point.

[BurnTire]

Ok the first post has been edited with install information.
Let me know how the video works as it is locally hosted.

[AZSonicSnake]

very cool!! the video took some time to load, but it worked for me. looks like something i need to get done soon.

btw- with it hooked to the clutch switch, wouldn't it be engauged everytime you depress the clutch? i am not 100% understanding how thats gonna work... (yea, i am probably having a blonde moment...)

[BurnTire]

very cool!! the video took some time to load, but it worked for me. looks like something i need to get done soon.

btw- with it hooked to the clutch switch, wouldn't it be engauged everytime you depress the clutch? i am not 100% understanding how thats gonna work... (yea, i am probably having a blonde moment...)

Yes it will, but the RPMs must be 1000 below the set limit to activate.

So If I set the launch RPMs at 6000 the RPMs would have to drop below 5000 to reactivate the unit so it isn't really an issue.

It sure does hold things nice and smooth. I gave it a good wack one time and could smell raw fuel so there are no lean issue like the stock setup.

[AZSonicSnake]

i don't power shift though, so everytime i left off and clutch it to shift i am gonna be in trouble if i wired it that way, right?