Tricking Jdm 4age Speed Sensors

[beerhead]

Problem:

Me and a mate were having a little trouble with his Bigport 4AGE running a JDM AE86 computer, it just wouldn't rev real well, had huge power troubles, which I thought could be speed sensor related.

 

Solution:

Wire a flasher unit into a relay that switches ground and feeds the speed sensor signal on the ecu. ;) It gives about 3-4 pulses a second. Works great! The relay will probably fry after a while, but you'll know when the motor has given up it's rev happy attitude.

 

He's gonna put the flasher on a toggle switch so you can get a little more life out of the setup. One day I might build a digital solution to this problem. I'll let you know how long it lasts.

[oh what a nissan feeling!]

That is a very cool idea ;) . I think the relay may last longer than you think. At work we put a fluro starter in series with 240v to a red light as a halfarsed flasher setup. It took well over 2years for the contacts to burnout, and the thing was on constantly. I recon the relay will live, its only 12volts!!!! :y:

[irokin]

Wow...needs the speed sensor. I disconnected the one in my silvia and the ECU hasnt complained yet. Cheap speed cut defender ;)

[Medicine_Man]

I've heard of people putting reed switches on the tailshaft i think to overcome this problem..

[beerhead]

Yeah that works too, but then the speed limiter will work, who wants that ;)