Thread: Turbo Charts And Best Turbos For Your Needs

Ryan, Ryan, Ryan.

T25, T3 abd T04. Most common flanges for turbo manifolds.

You have a T25 turbo on your bluebird manifold. This means a GT2871R which has a T25 flange will bolt up to your manifold.

The T25 outlet flange to the J pipe is not a universal thing. There are about 4 diffrent T25 J pipe flanges and or gaskets that I know of. Most of the time you can drill out one of the holes to make it line up.

there is 4 bolt
5 bolt standard T25
5 bolt GTIR T28
5 bolt GT3071R Well this was diffrent for my GTBB37

this could be true, but he also said he didnt wanna push it too far, alot of it has to do with tuning too. good management and great tuning will keep your setup solid

I guess I will, I will do a base dyno before I install the Z32MAF, Power FC and injectors and then see what it gives after a tune with the power FC and then after an increase in boost pressure and retune.

^ all in the tuning, fine tune it and you will see the best results, but it looks like you have a good setup for making some nice numbers

Good point. Tuning is very key!

sank u sanku

this is a very informational thread!

The 3071r with the t25 flange on a gti-r manifold works just fine on a stock internal det motor.

list your mods

Here is an old dyno sheet at 14psi.
Stock internal U13 det with 3071r,gti-r manifold,jwt ecu,S4's,750cc topfeeds

Kleensleeper, it looks like if you had made it to 17 PSi you would be about 380 WHP and 340 Lb Ft torque. If you made it to 20 PSI you would have been at or just a hair over 400WHP.


My friends car with a Disco Potatoe made 360 WHP and 330 LB Ft Torque at 17 PSI. He ran 118 at 122 MPH. Shifting the car at 7000 RPMs.


We will be taking it up to 20 PSi in a few weeks. It should do 380-385 WHP.