Hey Guys helping a friend get his rx7 Sorted out its gonna be coming to my shop for a slew of things to get it back on the road. Looking for options on a Plug n Play ECU and harness to use on a 1990 FC3S Turbo II, Mild Performance upgrades will be done larger turbo, it has some light porting and Recent rebuild before sitting with Rotary Performance modded Rotors for Lower compression i believe. and a few bolt-ons from Rotary Performance ignition exhaust etc.


tried searching plug n play and a few other terms on here but dont pull up much fc3s related info thats within the last year or so most is 3+ years old threads.


I'm looking for good integration to stock harness so gauges all work and accessories like A/C and Power steering etc.

Ability to Run Flex Fuel/e85 would be great

I dont want a full custom wire each connector type install. I would rather pay for the proper harness to plug into each sensor and make minor mods to the harness and sensors.


Im in Houston lots of tuning options around. and if needed ill ship the car to a tuner or we can remote tune it on my friends Dyno Dynamics Dyno.


any recommendations so far all i see is this unit: Haltech Platinum Sport 1000 ECU/EMS - 1986-91 Mazda RX-7 FC

 

Adaptronic is one of the few options I know of for S4 and S5 support

S5:
https://adaptronicecu.com/collection...emod010-rx7-s5
S4:
https://adaptronicecu.com/collection...oducts/emod009

 

 

You have an option like this if your not afraid of wiring in the stock guages a-la patch harness as Ludwig offered.
https://www.haltech.com/product-over...ngine-harness/