MAP and AFM ECU

[firstmk1]

I have an GEMS ecu but don't know if it's for a mk1a or b. What difference, if any, will this make? I tried an early ecu in my '89 car and it started and idled so the idea that one would work and not the other went out the window.

Has anyone else got/used a GEMS unit? Is it easy to update?

Cheers,
Ian

[RichardMorgan]

Is the GEMS a modified Toyota ECU? If it is and still has the Toyota part number on it let me know and I will ask Jeremy Ross for info. Richard Morgan

[firstmk1]

ECU is based on a MK1a 17030

The sticker on the back:
Toyota MR2 Modified ECU
Map name: MR21 (in biro - MR2 V1.02)
Date: 03.11.93
Std. Injectors. Grey. 8000rpm limit.
Fuel pressure - 54psi

D.T.W. Engines Ltd.

[ldavies83]

I've just found DTW Engines phone no if you want, it was in my MR2DC members handbook: 01273 422128

Address:
Stort Mill Industrial Estate
Riverway
Harlow
Essex

HTH

[firstmk1]

Thanks, I'll give them a call.

Does anybody have any software that can be used to connect an ECU to PC?

Ian