I was flicking thru my old (05) jaycar catalogue and and found the air/ fuel adjuster. It actually looks pretty cool, its looks to be just like a piggy back which intercepts the volts reading going from either map or airflow meter. Its a hell of alot cheaper than other name bracnd piggy back units which i would'nt bother with except this is bassically just a diy job which does the same job anywayz.

It has real time mapping, 128 load points.

Do you think there would be any gains from this unit?