Tires are holding up better than I imagined! Last night the tires did slip a little in second, but with my old tires it was a roach fest thru 3rd gear. With these falken ziex 512's I am extremely pleased! $99 each and same performance level as the BFG's without the wheel hop that the BFG's seem prone to.
As far as the PSI, I have a metric boost gauge
so I have to convert to find the actual pressure.
I think I figured out now that the wastegate is opening sooner because of where I put the damned fitting for it since we installed the intercooler. Last time it was plumbed right before the throttlebody, but now it is on the intercooler tank. By the way, you're gonna like this intercooler, its way cool Looking!
I didn't think to start looking at the boost gauge until halfway through the tuning.
The needle now sits on the line below the 0.5 Kg/cm^2
The line below is 0.4 Kg/cm^2 and it may be just a tad above it, or right on it. If 0.5 Kg/cm^2 = .5 Bar then that is 7psi approx where the spring used to open.
0.40-0.41 bar seems to equate to around 5.5 to 5.75 psi.
So there you have it, ~5.5psi netting about 300 HP. I still am working on the low side of this turbo, not even in the efficiency range yet. I am going to try for 9-10psi on 93 octane when I get my boost controller figured out and 93 octane in the tank. I think I will keep the stock spring in the wastegate for safety and I will use this tune as my safe, driveable tune. I have met my minimum goal for my engine on the first try, 300 HP streetable. I remember being really worried that I wouldn't, or the engine would break (again) etc. Now it seems a long time ago.
By the way, did I say there wasn't even a hiccup from the motor?? How about those stock rods doing good so far too?
Yeah, im getting anxious! Keith has been nothing but a pleasure to work with, and is just as excited as I am about this. 
) Not just peak numbers either but the entire powerband since full boost is achieved in the 3000 rpm range!
