Do you think the he221 7cm can flow enough for 300 whp (345 bhp) without touching the head execpt a big cam? I saw online that it can flow up to 38 lbs/min isnt that enough for that power level?
HE221 is good up to around 260 engine hp with better head and good fueling when it´s tuned to take constant full throttle driving. With this small turbo power remains around same with unmodified head (for me its not a gain to gain hp for 10 or 20hp), but its needs to use more boost for same amount of air. With stock head you can use more boost than with ported head without EMP creeping too high. Usually always when flow in enhanced, boost/emp-radio goes worse because exhaust side needs to handle more air mass. It´s bit complicated before you´ve measured and tuned lots of different setups and small changes on different setups one by one and everything always measured.
Do you think the he221 7cm can flow enough for 300 whp (345 bhp) without touching the head execpt a big cam? I saw online that it can flow up to 38 lbs/min isnt that enough for that power level?
HE221 is good up to around 260 engine hp with better head and good fueling when it´s tuned to take constant full throttle driving. With this small turbo power remains around same with unmodified head (for me its not a gain to gain hp for 10 or 20hp), but its needs to use more boost for same amount of air. With stock head you can use more boost than with ported head without EMP creeping too high. Usually always when flow in enhanced, boost/emp-radio goes worse because exhaust side needs to handle more air mass. It´s bit complicated before you´ve measured and tuned lots of different setups and small changes on different setups one by one and everything always measured.
Do you remmembre what turbo, nozzles clutch did you use with this setup for 256hp ? Thanks
HE221W, 0.280, SRE+VR6. 11mm IP also installed, but 10mm would give same power. No gains from it in this setup :)
@@kantikai You are a legend :D stock head and bottom engine ?
And which he221w ? 7cm , 6cm or 5.5cm ?
Thank you sir 😁 Head was mildly ported but bottom unopened 400tkm or so. Housing was 6 😋👌 Very nicely working engine.
@@kantikai Ow 400tkm sooo nice my friend !! Whats max HP could give stock head with a bigger turbo than HE221w ? 260 bHP ?
What manifold did you use to fit the Holset turbo?
I usually have used AFN manifolds where flange has been changed by welding it with MIG.