Originally Posted by Jafro
I ran a 14.89 with a T-25 with a stock 8.5:1 compression 2.0L 4g63. That T-25 maxes out around 14PSI, and the charge air is hot at that pressure. It won't heat the air up as bad at 6-7 PSI. It's more efficient at 10-11 PSI than it is at 14, but the biggest gains you'll achieve are going to be had from an intercooler.
It's actually well suited for SOHC Honda engines because they just can't spool larger turbos with any efficiency. You're better off getting the boost low in the power band and milking it to red-line than you are waiting for a bigger turbo to spool to get that huge kick in the pantys just before having to shift.
As far as injectors are concerned... someone buy my DSM 450's please... I upgraded to RC 550's, and have 4 perfectly good working 450cc injectors laying around. I also have a 2g DSM side-mount IC, someone buy that, too. Just buy all my crap. Please. It's not doing me any good just sitting in the garage.
That's absolutely not true, there are plenty of turbos bigger than a T25 that a SOHC can spool easily and make a good powerband with i.e. T3 super 60, T3/T4 50 trim with a small hot side a/r, T28.