Hello i have a simple project i started on and kinda wanted some input on a idea for it. I know we all want a rev limiter for the rtek ecu that is adjustable right. well how about this



pretty simple huh? you see i have a msd street-fire CDI box and dont want to sheel out more money for two (plus they don't really do much on the trailing). so what i would do is use the rteks rpm switched output. to activate two of these to kill the signal going to the trailing coils.

Basically this is how it would work the msd box is set for 6000 and the rtek set to 5500 rpm. as the engine revs up the trailing is cut a little early so the relay does not have to switch on and off constantly. the leading with the msd box would do all the work. and as a fail safe the rtek rev limter is still on stand by ready to step in if any thing fails.

there was only one draw back i found when thinking of this THE TACHsignal reads form the trailing. thanks to the msd box with a tach output this should not be a problem

what do y'all think of this?

 

it worked when I did it. I used the hi-6. Also the rtek rpm activation feature is not necessary. I used the rpm activation line from the cdi box to two 5 pin relays that cut the power from each trailing coil. The problem with my setup, the coils would not come back on until the car was restarted. No matter which way I wired them to cut the power.

 

Maybe you should have wired it to cut ground? or maybe it's just a fail-safe the the Hi-6 boxes and theres not **** ya can do..

 

the hi-6 wasnt the problem. The trailing coil was. Once power is cut, they dont come back on. I talked to another forum member about it and it seems my car was the only one with that issue....

 

well i should be close to finishing up my rewire and build enough to try it out soon. i will be using the ground going to the coil. if i am right it should have no effect on the coil and it should still have normal operation ......