Boost To Power Ratio

[suburban drifter]

hey peeps um does anyone know what power gain is acheived by a raising the boost by a psi

like is there a way to ruffly workout say howmuch more power you would get from turning boost up for 10psi to like 18psi

probably sounds stupid and confusing everyone but keen to know ??

[GTRsean]

Generally 10hp for every pound of boost, sometimes more. As soon as you go out of the said turbo's efficiency range (compressor map will tell you), the gain is less as the air starts to really heat up the more psi you try to run.

For example, I picked up 40kw going from 12 to 17psi on my old setup with N1 turbos. Depends on tune as well.

[suburban drifter]

Generally 10hp for every pound of boost, sometimes more. As soon as you go out of the said turbo's efficiency range (compressor map will tell you), the gain is less as the air starts to really heat up the more psi you try to run.

For example, I picked up 40kw going from 12 to 17psi on my old setup with N1 turbos. Depends on tune as well.

cool thanks dude exactly what i wanted to know

[TiTAN]

You can not gauge how much extra power you will get with extra boost as every different model and size turbo will produce a different result, then you have to take tuning into account as that will vary the result drastically.

[The Mafia]

Oh yeah, you can because a T51r KAI has the same amount of flow as a stock R33 turbo...

lol I can't believe someone actually replied and gave an answer they though was accurate.

[R31Nismoid]

^^ agreed.

Impossible to tell.

Every turbo is different, compressor wheels flow different amounts etc etc.

So there is no 'rule'. The only 'rule' is what the compressor map tells you.

[Beer Baron]

it's somewhere in the ballpark of betwen 1hp to 180hp per psi. anywhere in that range is to be expected... (yes I am being sarcastic).

there is no formula for boost = hp. every turbo will flow a different amount of air at a different boost pressure. and every engine will produce a different amount of power for a given volume of air.

[WYTSKY]

suburban drifter, perhaps you should mention which turbo you are referring to and the mods you have, so maybe someone with similar parts might be able to give you an educated guess instead of people being sarcastic.

[dano4127]

To put it in perspective for ya with my setup:

15psi - Stock turbo = 200rwkw

15psi - XR6 GT35R = 260rwkw

[GankNZ]

can anybody take a wild guess how much i would gain by winding up boost from 10pound on a rb20det with FMIC, bov,2.5 exhaust and 2core radiator, to say 13pound?

just curious...

cheers

[Guilt-Toy]

this is the way i work. more boost = less power. boost is enemy number 1.

[NWR31]

can anybody take a wild guess how much i would gain by winding up boost from 10pound on a rb20det with FMIC, bov,2.5 exhaust and 2core radiator, to say 13pound?

just curious...

cheers

sure, 16.5hp

[GeeTR]

tough crowd

Edited September 1, 2008 by GeeTR

[joeyjoejoejuniorshabadoo]

So if i wind my stock 33 turbo up to 30 pounds will it be full hektik?

[rb26s13]

So if i wind my stock 33 turbo up to 30 pounds will it be full hektik?

only if your flux capacitor is installed correctly.