Did you fix the broken vac line to reg before or after the dyno run? If after, that is your problem. (don't ask how I know)
you're not running lean though once your on boost 12.5:1 to redline tee-kay is chem test for suspected head gasket i only suggested that because your talking about idle, low down misfires your AFM is fine otherwise it wouldn't be revving out like it is we'rd AFRs on transition, on the lean side below that.. fine AFRS once on boost, heaps down on power.. which is why i suggested boost leak test
Thanks heaps Nem, I appreciate it mate. Reckon I could borrow it when I take it for a tune, just incase they decide to swap it out on the Dyno? Thanks mate. So I got a new injector connector, fitted that, fitted the afm and went for a drive. Car feels the same, idle is fine today like it was yesterday. Will test for leaks when I either make a BLT or borrow one and then test for AFM voltage, but apart from that it's looking like it needs a tune.
I paid for two runs, I wanted to see if it would richen it up and it was safer to drive. First run with the broken vac line it made 274 at 4,200, second run with the vac line fixed it made 286.7 at 4,200. Still lean as shit.
I thought that too, but others have said they've had AFM's do weird things? RE the boost leak, it is really down on power which is strange, but it's making 21psi according to the eboost 2 (actually I haven't looked at it for a while, highest I've seen it go personally is 17). I'll check for vac/boost leaks before it goes on the dyno.
boost pressure is irrelevant, your turbos will keep boosting with a boost leak, the spent air will be pushing your turbos past their efficiency creating hot air and no power your boost controller will hold your waste gates shut and keep creating more boost till it hits the preset boost peak ie itd be like your boosting to 25psi with 8psi being leaked out, your boost controller will be still seeing 17psi i had the big accordian pipes (infront of the turbos) in the past with a big split underneath them, theyd cause lean mix even on boost.. but as i noted before, once your on boost its not running lean
He was running on the leaner side on boost, as i was watching it during the dyno run. Was 12.5AFR on boost.
Well I'm scratching my head with this situation.... If the car hasn't been tuned since it made 340 and there are no physical factors making it run lean, wtf is going on? Can a Nistune ECU just lose it's tune or have the tune mess up?
How do you know there is nothing wrong mechanically? Done your blt yet? I've never heard of a nistune dropping its tune, but that doesn't mean it isn't possible.
Trent post up your dyno sheet so everyone can see. Personally i think give another AFM a go and make sure your pump/filter etc is all up to scratch. However your other problem with the power nosing over at 4300-ish RPM seems to be cam timing related(In my opinion, i've seen similar sheets and they turned out to be cam timing) .
Nem, the 274kw sheet is up on the first or second page. My old car had the cam timing set wrong and it didn't do that, it just didn't make as much power.
