tais300 wrote:Soiled ran a gt2871 which is pretty much the same size/airflow but the gtx 2867 should spool faster. I think his ran ojt of breath as the engines rev relatively high for stock rpms. I personally would run a t3 flanged housing or step up to a gt3071 for the same dollar and make more power
oaasport wrote:Id be looking at compressor maps if i were you. Going with a gt28 series means more psi to make the power. Fast response, oh yeah! Harder to make power, same boat. Most sr20 owners using the gt28 series run e85 to max out at a hair over 420whp at 21lbs of boost. Yet a gt3076 ive seen make 420whp at 16psi on an s2000, a 240sx, an evo. Correcr me if im wrong soiled but arent you on 21lbs and making 475whp? Small turbos can do the job, but forged engine and lots and lots of tuning will be necessary
oaasport wrote:I'm really not trying to be rude so don't take this the wrong way, but if you want spool at 2500rpms start thinking about a 1uzfe swap. You might get a turbo that starts spooling at 2500 rpms but you won't see good positive pressure until about 3300rpm. A small turbo like an evo 16g can get close to start seeing good positive pressure at about 3k, but being a small turbo it means running e85 because pump gas just won't do it, especially for the power output you are looking for. Small turbos are made for small engines from the factory with no intentions to make more power. There for the turbos maximum efficiency is going to be at 7-11psi, meaning it will make maximum efficient power here.
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