Quote:
Originally Posted by steve99
Car starts on port injection only then it runs on port injection only for first minute or two.
Then it runs whats in the pi\di ratio tables
Im guessing that you have bigger port injectors. If these are scaled badly or injectpr latency is set up badly car will often idle rough for first couple of minutes till di injection stsrt being used as a lot of tuners run 100% di injection in po\di tables. But this wont fix the period between startup and when di kicks in.
As for the vvt if the car wont idle properly after a tune reflash for about a minute with no throttle input then ecu eont eeont enable vvt. At some point car needs to idle with zero throttle before vvt will engage.
Could also be a bunch of other issues
Check your DI compiter is bolted up to engine will all three bolts, if hthat box has no earth weird stuff happens
also check for vaccum leaks especially hoses on underside of manifold , if your boosted did you clamp them as if not they will blow off with boost
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Hello all.
Did anyone get to a solution here? we having the same issue.
We have DW 900's as Port injectors and i have sent the Latency/dead time according to 3bar base pressure. I have been hunting around and cannot find a conclusive answer to what the base pressure is, logging the car with ecutek the Fuel pressure - PI (Bar) has zeros throughout the logs....
We having the same issue around nasty start and initial idle and as per Steve99 you can see the PI are at 100% for a period and then it flips over to DI.
at WOT it is fantastic and when you get going it is also good but occasionally idle is iffy at best and cold start is terrible.
i've removed the Close loop fueling Racerom addition to see what affect this will have if any.