Mike, what kind of gasket does your intake collector use? I had a heck of a time trying to get a good seal with my new gaskets for the OE upper manifold, so I might find one off another car and get another gasket.

How long is it going to take you to get another set of external wastegate springs? LOL

Who is doing your tuning with Ecutek?

For the heads we used cometic. For the intake plenums we used oem.

After further digging the springs seem fine. We are looking into other restraints and seeing as we are uncharted territory for this platform I am double checking were we may be running into stumbling blocks. As of right now we are running a double spring setup in our waste gates for 20-22psi... This should be good for about 38psi of boost... We are in no way maxing out the turbos and given that it is Father's Day the race gas shops in our area have all been closed this weekend... May have to wait later for the race gas run on c16. I will post up what we changed and any further updates.

Also this is an ecutek tuning platform.

Uprev vs ecutek...

hmm.. What exhaust housings are you running? seems to be falling off a bit on top. Maybe exhaust piping is choking it out? good numbers so far though!

We aren't running out of steam especially in this psi range... I am think more of a turbo intake piping issue... That could be reducing the efficiency of the turbos... We are moving a ton of air through 2.5" pipes

We are on a GT3582 based turbo and T25 .82ar turbine housing I believe.

I haven't dug into this, but how about pipe diameters used for the Alpha Omega kit with the GT-R? Throttle bore? With your VR38 intake plenum fitted, it looks like you can fit in the AMS one.

[EDIT] At this point I wonder if you should consider getting various upgrades like a new MAP sensor, big bore throttles, intake manifold, etc. 3" piping!?! Geebuz, what a money pit here haha.

You might want to look at those manifolds and housings. 900+ is an awful lot to shove through that flange. Those gt35s are definitely not getting the flow they need.

Raise the bar again!!! New world record!

We are stuck at 24psi of boost... Once I sort the issue out expect the numbers to go up again...

What a monster...those of us at 5 to 650whp have some BA rides, but you are off the charts!!! :tiphat:

:iagree:

My 510/440 is basically worthless until 3rd gear. Can't imagine what twice that would be like :ugh2:

It will be like the old Twilight Zone Movie at the end. Wanna see something really scary???? It's, I can't get my head off the headrest moment.

Surprisingly the car hooks! Did a few pulls today playing with ecutek traction control and man it is a beast!!! You work soooo much harder when you jump on it... Your slammed into the seat and your mind has to be 100% focus. While the whole Time the front is lifting and rear is squating making the steering really light and the whole time your thinking to your self "ok when are you going to step out on me?..."

Most fun car I have ever driven!!!