I own a 93 R1 and have:
TKT Power Pulley Kit
TKT Cold Air Induction with K&N filters
TKT Pillar Boost Gauge
TKT Clutch
3" Pettit cat-back exhaust system with dual tips
Greddy Turbo Timer
Steel air separator tank

With the stock ECU the previous owner's engine broke, he said that the stock ECU couldnt handle those upgrades. And i was wondering if anyone has the M2 Re-Mapped Engine Control Unit:
M2 reprogrammed ECUs are customized to safely extract the most performance out of a modified RX-7. While it may be possible to squeeze a few more horsepower out of more aggressive tuning of the ECU our philosophy dictates a more conservative approach. The major parameters reprogrammed on the OEM ECU include the boost, fuel, and timing maps. Reprogramming is done on your ECU to ensure 100% compatibility. Price includes 24hr turnaround and free overnight return shipping.


What do you think? Check is out as M2performance.com under engine management.

 

Its a good ecu, doesn't get rid of the 3k stumble, but I used one for over 1.5 years and loved it. If that damn HP bug would have stopped biting my *** (new hi-flow turbos, MP) I would have stayed with it. I made 316 rwhp with the stage 3 m2 ecu at 12 psi.

Tim benton

 

Yea it is a good ecu. I just sold mine to go programmable.It was a little rich for me though.I dont like playing it "that" safe.But overall a good unit.I would suggest to buy a used one from the forum though as opposed to a new one from m2.You should be able to find one here for $300-$400 if you are patient.

 

I might be selling my M2 Stage 3 soon, send me a PM if you're interested, I'm looking to get around $400.

I've been running an intake, FMIC, DP, MP,CB boosting 14psi for about a year now and have been happy, but I'm gonna start getting some serious mods and I need to get a PFC.