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Looking for plug & play or minimal wiring aftermarket ECU 01-02 wrx sti impreza

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I used the base ECU flash program with the same results then a carbery set up with more control to get things set up, they both worked well but the usual 01-02 stock ecu C/L intermittent hesitations keep raising there ugly heads & I'm over it.

Rather than try another ecu I'd rather just bite the bullet & go full aftermarket with support.

So looking for advise on the above title

- I want full control of the ECU & base settings/calibration.

- The usual analog inputs for stock narrow band lambda, egt's & wideband o2.

- Oem knock control sensor analysis & all other stock ecu functions.

- OEM Immobilizer compatible.

All feedback appreciated, any vendors feel free to get in touch.

Currently based in Perth AU.

kevangove@hotmail.co.uk

A couple of comments for your consideration:

1. No aftermarket ECU supports the factory immobiliser on these cars as far as I know. The immobiliser may still function in terms of preventing the starter from cranking the engine, but the ecu will not disable injection/ignition like the stock ecu did.

2. Although most aftermarket ecu's knock control system will work with the stock sensor fine, it is not going to work to the level of the stock system (or at all) out of the box. The whole knock control system will need to be fully tuned and validated for your specific engine. So don't go expecting that you can use the knock control to tune your ignition curve like many stock ecu re-flashers do.

3. Since you sound frustrated at the factory ecu which is relatively simple to tune with generally 95% of the maps already tuned quite well by the factory and usually only relatively small adjustments needed to a few of the tables. Be aware with any aftermarket ecu, even with a good basemap, you will be tuning a lot of the maps from scratch - cold start, idle control, boost control, cam control, VVT maps, fuel and ign maps, knock control, etc, etc... The advantage of the aftermarket ecu is you can make all adjustments live and see the changes right away, so that helps a lot, but just wanted to point out it will take a whole lot of work just to get to where you are now. To many it is a satisfying process and you learn a lot along the way, but be prepared for a large investment in time.

The some of the 16 bit ecu's have a fault or a tendency (not sure which to say) to intermittently spike ( + & - ) the requested fuel base, I've got Megalog screen shots of it while logging. It can interfere with the O/L to C/L transitions. This is where the intermittent hesitations come from, most are fine or barley noticeable, the very few & far between that cause a slight stumble are the cause of any frustration I may have.

I've seen it on 2 different wrx's now and been through it with some of the guru's at RR, something in the base coding for the catalytic converter efficiency doesn't agree with some ecu's.

Being such an old version now it just isn't a widely spread problem that's worth the time for someone knowledgeable enough to purge it out I guess.

I recently switched my rom with another vehicle of the same year & the problem persisted, although to a much lesser extent.

Rather than buy another oem ecu I thought I'd treat myself to an aftermarket item since I've had the car almost 8 years.

Hence, putting the question out to the masses.

Devilishly close to arrogance for someone to claim they're more adapt & it would be simple to tune out.

3. Since you sound frustrated at the factory ecu which is relatively simple to tune with generally 95% of the maps already tuned quite well by the factory and usually only relatively small adjustments needed to a few of the tables. Be aware with any aftermarket ecu, even with a good basemap, you will be tuning a lot of the maps from scratch - cold start, idle control, boost control, cam control, VVT maps, fuel and ign maps, knock control, etc, etc... The advantage of the aftermarket ecu is you can make all adjustments live and see the changes right away, so that helps a lot, but just wanted to point out it will take a whole lot of work just to get to where you are now. To many it is a satisfying process and you learn a lot along the way, but be prepared for a large investment in time.

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