Turbo Project

[Huw Powell]

> whole routine.  Car is running well, but the air/fuel and low oil pressure
> at idle still haunt me.  

your oil pressure is not really low, really.  considering the factory
two stage warning is set up for 0.3 bar below 3k and 1.8 above, you've
still got room to play.  shoulda used Xw50 oil though, it is summer.

> plumbing and the turbo.  Maybe the ISV should feed from before the turbo,
> mine feeds from right before the throttle body as a stock GTi would.

maybe someone, anyone, with a stock turbo setup can tell you where the
ISV goes "between"?

> 
>     I can obtain plenty of boost, all the way to 7.5psi if I build it slowly
> and do not hit WOT.  It's odd, but even with a light foot this car is much
> faster than stock.  If I try to get on the gas quickly the gauge reads lean
> and stays there, though I don't hear any pinging, the car just doesn't feel
> like it's going anywhere,

>     I am thinking of disabling the WOT switch and seeing what happens. 

I was mostly typing this reply to suggest exactly that experiment. 
perhaps your WOT conditions per your ecu are just wrong for your current
setup and demands.  hard to imagine why, but possible I guess. 
Considering WOT sets a fixed open loop DPR current, what if under the
OXS loop you're already *over* that amount - the WOT setting would
actually *lean* out the mixture instead of richening it.  But remember I
am just guessing wildly here, I *do not* know what I am talking about!

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/