I just picked up a t25 for real cheap from a friend. I plan on putting this on my Built d16y8 75.5mm SRP forged piston 9.1 and eagle rods with stock sleeves. Will be tuned on CROME Pro also. It has an internal wastegate with 2.5 in down pipe into a mandrel bent 2.5inch exhaust.

My question is at what psi am i in the the efficiency range of this turbo? I have no idea how to read compressor maps this is why im posting.

2. What would be the max PSI i could run on this turbo without running the dog gone **** out of it?

I want to run this turbo to it`s peak efficiency so please chime in with some opinions. Sorry for the noob questions

 

you wont make good power on that.

Get a t3/t4

 

well it was practically given to me and has no shaft play so i want to use it.

 

It'll spool quick, and make power from about 2500-5500 before it starts to fall off/flatten out.
The internal gate is probably set at 7-8 psi.

 

internal gate is totally adjustable

 

id like to run abt 15 psi on this thing but i just dont want to over work it because it will be driven on daily.

 

15psi?? Get a bigger turbo and make more power at a lower psi.

 

unless you auto-x every day,at least get a T3. I used a t25 on my first D turbo. wasnt very cool. You wont be able to hold any signifigant boost up top either. but you can probably get it to spike 15 as it breaths fire into your charge pipes get a good IC