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Hi everyone,

I'm looking at getting a reflash for my R33 GTST series 2 (09/96 build). I have been informed that my ECU model number is unusual and likely from a series 1.

The number on the ECU is MEC-R521-A1-4401, and it is the same written on the chip inside. The ECU does not seem to be fiddled with at all from a soldering perspective.

The engine from what I can tell is a series 2 (as is the whole car (ie. dash, lights, bonnet, rear), I even put in Splitfires that are only suitable for Series 2 and they work fine. Other details are is that it doesn't have the igniter module at the rear of the rocker cover. It also has 2 plugs to the TPS (I was told they have 1 on the series 1).

I wanted to get a reflash as my dyno run showed very rich fuel (under 10:1 and retard of ignition after 4200 rpm on 11psi (I've reset my boost controller to give 10psi), the car does however run fine and has run fine for 2 years now. No idle hunting, no exhaust popping, etc etc.

I have R34 SMIC, turbo back exhaust, std BOV, std turbo, walbro pump.

Can anyone tell me they have a series 2 with a ECU with number MEC-R521 ??? I am told it should be R620 or R720.

Or any other advice (Waits for get a Power FC comments :P )

Thanks.

Edited by simpletool

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