Quote:
Originally Posted by JB86'd
Anyone have any concerns that disabling port injection from 5200 to 7200 will increase valve deposits typically associated with direct injection, or is running it in only the lower RPMs enough to take care of that?
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engines will spend the majority of time spinning at less than 3500 where most port injection is used,also the ecu uses 100% port on every startup for first couple of minutes.
bumping that 20% high load port injection cut in to 7200 from 5200 will be a very small drop in total port injection run time unless it a race car.
it makes no difference if your on high quality fuel but my south africian friends were able to add back in about 4 degrres of timing and gained almost 8 kw from that mod on 95 ron fuel which is about your 89 aki, thats the best they have