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You might want to consider a aftermarket ECU depending on the price for genuine, there are plug in, plug in with adapter or wire in options. While you would need to tune it, you get a lot of future proofing that way.

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Hi thanks for the reply, doing a conversion to r34, thought maybe would get it up and running on current setup might be easier then replace with aftermarket.

 

As this engine has single turbo conversion, 800cc injectors, hks pro v ecu linked into standard ecu. Has no airflow meters, The standard ecu got water damaged.

 

based on above tuning parts thinking would be easier to source ecu plug in and start, or would i be better to get aftermarket ecu and teach the above mods, sorry not sure on aftermarket ecu 🙈

It is almost certainly better to get something aftermarket, unless you have a reasonably priced HKS dealer/tuner nearby. The HKS ECU was a worthwhile thing in the day (ie about 30 years ago). If you don't have that friendly HKS dealer nearby you are in for a world of pain with that setup

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