450whp evo vs 240sx AGAIN

[EJ25RUN]

heres his post about it on 350zmotoring.com

Quote
"From previous tuning sessions, and tuning Gman's car, the VQ with a free flowing exhuast can make about 550whp on pump gas at 12-13psi of boost pressure with a good safe tune."

So judging by this, i guessing 12-13 is the treshhold on stock compression and internals.

And the head was ported so their z was boosting higher than 16.5 psi.

[EJ25RUN]

quote
"So we increased the fuel pressure to 60 psi of differential pressure (vaccum line disconnected), then reconnected the vaccum line."

what's differential pressure?

i mean, isn't this still the add 1 psi of fuel for every psi of air principle?

[tony]

Quote
"From previous tuning sessions, and tuning Gman's car, the VQ with a free flowing exhuast can make about 550whp on pump gas at 12-13psi of boost pressure with a good safe tune."

So judging by this, i guessing 12-13 is the treshhold on stock compression and internals.

And the head was ported so their z was boosting higher than 16.5 psi.

Nah the guy he's talking about has a built motor and a 9.1 compression ratio I believe. Stock can handle about 12-13psi though from what I've seen. The rest of it you would have to ask him, he's a true expert while I'm still learning myself

[EJ25RUN]

Hope to see the G, if you go ahead with that build.