Need some advice with my turbo.
I used this turbo to fabricate the T4 setup. It performs better than stock on top end and leaves a little to be desired on bottom. The truck actually runs good on top now. EGT's are good.
My question is that I can make 10psi max at 1500rpm. At 3500 wot
I only get 26-27psi boost with 38-40psi backpressure. Is this comporable to an H2E, keep in mind I am running stock sticks and an edge.
I am seeing smoke at 26-27psi. I would think that a turbo this large should clean up. I don't know if there are tighter ex housings available and I think it may be time to invest in a good turbo. Anyone with comparison numbers from an H2E or anything else might help. If this is normal then good, but I feel like there should be a more efficient turbo out there. It has never even thought about surging though.
Nomenclature (tag ID) T4 GT45 Y2004K
Inlet (exducer/hot side) T-4 Flange 70.1mm x 82.55mm (2.76” x3.25”)
Outlet (exducer/hot side) 4.25” V-Band
Inlet (compressor/cold side) Ø 109mm (4.25”)
Outlet (compressor/cold side) Ø 86mm (3.38”)
Exducer A/R 1.05
Compressor A/R 0.66
Bearing Type Ball Bearing
Oil Supply Fitting Flange
Oil Return Fitting Flange
Compressor major diameter Ø 98 mm