Originally Posted by Terry@BMS
Yep got it -- not really used to reading these logs so it didn't click at first.
(Let's keep in mind I don't know crap about the n55 or tuning, so I'm kind of thinking out loud, I guess you can say I like attempting to think through problems)
The turbo, while not hitting the targets seems to still make more boost than stock at the later rpm range. the key is to find out where that slack is. Why isn't it hitting targets. Now hardware guy says tuning, tuning guy says hardware, understandable -- this is new territory for both of you, while both having been successful in your respective fields.
I'm unfamiliar with the MAP sensor on these cars -- do they limit how much boost you can run? Could you set boost targets for 23psi at 5500? Or maybe set boost targets at 17psi? Doing the former would be interesting to see how much boost is being made, what if it hits more than 17psi that way? And the latter -- what if it hits lower? That could lead me to believe that maybe the DME is limiting something?
What at about trying to target 20psi at 5500 on stock turbos? (I recognize the harm in this, I'm only suggesting this for a run) I mean if it hits 17 there, maybe it's DME limiting it? However if it meets 20psi (or more than 17) maybe something hardware related is being finicky? "