4th gen caldina turbo limits, how far can i go with this turbo? Options

[evert1976]

hello there,

i'm new on this forum and think it's great

tried to find info about caldina 4th gen 3s-gte
i want to know how far i can go with the original caldina turbo
because it kicks in at low rpm (1.1 bar at 2800rpm) it drives very good on the road

Visit My Website

got a fmic and 3"exhaust but after 4000rpm the pressure drops from 1.1 to 0.9 or even 0.8 bar at 6000 rpm
aem boostcontroller set at 1.1 bar , walbro fuelpump (look at proflie for info)
280 hp is the max at this moment

thanks

[evert1976]

ok thanks,

what can it be that he wil stay at 280 ?
3'' exhaust , fmic with 2,5"piping

maybe the intercooler is not up for the job?
it a truck intercooler cut in half with new sides on it.

if i can get 330 i'll be very happy
wil not go for new mods cause i've also got a 2JZ in a bmw E30 chassis to build
but another intercooler is not that expensive and an easy fix if so...