Made a Kit for the D15.
 

Y7 head/ B7 block 10.1:1 comp.
Shot rings, 160k. POS temporary motor.
Heres what the kit consists of.

Non intercooled for now.
2.5 inch charge piping.
2.5 inch downpipe and exhaust.
T3 .60/.63 from a Nissan.
2g DSM bov (JBweld kept cracking and leaking. Used plastic epoxy and its much better now)
Home Depot couplers.
Uberdata base map a friend made for me.
Y7 mani cut with a plate welded to it, then turbo WELDED to the plate.
Turbo spools up really late. Around 4500 in 1st, 2nd. About 4300 in 3rd, 4th and 5th.
Boost hits 5 psi immediately and within 500-1000 rpm settles at 7 psi.

I guess the power is decent.
Future plans are a small IC and DSM 450's with a new uberdata map.
And getting a b7 block with new rings soon for free.

Ill try to get pics up soon.

I learned a lot here. Thanks for all the help.

Re:Made a Kit for the D15.
 

Are you sure your wastegate is fully closed when the turbo isnt spinning? You may want to try the carb return spring wastegate mod, i have done it and get a full 5 psi by 2000rpms. It may be u have a bigger turbo though, i have an IHI RHB5.

Re:Made a Kit for the D15.
 

The wastegate flapper is definately being held open all the time.
The WG I got didnt come with my turbo, but its for a t3.
And it fit, somewhat.
I dont mind waiting for boost at all really, One I get past 4500 in 1st I just full throttle shift every gear and never fall off boost.

I have read about the carb return spring, it sounds good.
But I havent read enough about it to try it.

Thanks for the info.

Re:Made a Kit for the D15.
 

that t3 .60/.63 is a ------- monster compared to your rhb5.

rhb5 is smaller than a T3 .42/.48

Re:Made a Kit for the D15.
 

i have a t3/t4 on my d16 spools earlier than 4500. starts spooling at about 3200, its a t04e 50trim with a 48 a/r exhuast

Re:Made a Kit for the D15.
 

Yea thats a d16.
Prob with good rings.
And smaller A/R.