Injectors and VE question

[Schweg]

I have a MS3 Pro on a 1600 turbo engine. Things where great then I went and screwed that up.

I went from 400cc injectors to 850cc injectors. Both where either junkyard or eBay specials so I have no numbers on them.

With all the above stated I have an issue at small throttle openings and cruise in that I have a lean back fire / pop. The AFR swings about .8 when in cruise.

Tonight I noticed much more stable AFR at cruise but I never got out of WUE.

Just looking for help or a direction to look. I have data logs but other then throwing up different things I’m not sure how to fix it.

Thanks


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[panel]

Maybe post on the MS forum or see if you can post an MSQ here with a DATA log. Isn't there a spot where you can change injectors and it will give you a new VE table based off of that ?

If not I think you might have to start all over and just re-tune with VE analyze or whatever you've been using for tuning etc.

Or send a note to Piledriver or Mario.

[Schweg]

Panel -

I’ll work on getting an MSQ and LOG posted tonight.

I’m 95% on a rough VE. I guess what I’m see/feeling is the engine react vary different on and off WUE. But I’m not sure what or where to look for the changes I need to make.

[panel]

I guess what I’m see/feeling is the engine react vary different on and off WUE.

Mine is great now that I've used this feature.....

http://www.tunerstudio.com/index.php/pr ... ue-analyze

[Schweg]

I forgot to update this thread, so in addition to the pop / stutter at minimal throttle my idle was starting to rise. Until I was siting at 2000 rpm off throttle.

I found two intake leaks and fixed those, also fixing my partial throttle issues.

All in all trust the systems and don’t forget to check mechanical items.

I have run WUE twice but I am always impatient and end up stoping it and driving.


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