I know the AEM EMS has a built in 2 step limiter. My question is, how do you wire it up to activate it? Is there some ground wire in the EMS that I must tap into and wire a switch to it or something? I'd be doing this for launch control if anyone needs to know


Thanks
Jonathan

 

It's easy. Go to Setup>Rev Limits>2Step Rev Limiter>Options - 2Step Rev Limit
Switch Always On
Fuel Cut *whatever rpm you want*
Ignition Cut *whatever rpm you want*
Ok below VSS *whatever mph you want*
Retard Rev *whatever rpm you want*

Have fun with the flames

 

Well I know how to do that part

Question is, how do I wire up a switch for it to turn it on and off at will without having a laptop handy?

 

Actually now that I think about it.

If I set it always on, the setting "Ok below VSS" means it will only come on when the car is below that speed?

 

Sorry for the oversimplification Yes, you will need a laptop to turn on/off this function. When it's on, it will only activate below your set mph. Mine is set at 5mph.

 

No need to wire up any additional switches/wires etc too.

 

Nice to know!

 

Thanks, going outside to try it right now

 

JohnZ, what did you set for your retard rpm?

 

Well I tried the following:

Switch Always On
Fuel cut = 0rpm
Ignition cut = 5000rpm
Ok below VSS = 5mph
Retard rev = 12000rpm (this is what my stock limiter is at, I don't want to play with it without knowing what it is)

And it doesn't work

Any ideas?