does anyone have a rough estimate of how much 1 psi of boost would give in terms of hp (preferably whp)?

 

it depends on a lot of factors. It's safe to say between 8-12hp per psi assuming everything is equal across the board...there ar just a lot of factors involved.

charge temps, cfm/psi, tuning, etc

 

CFM - around 500
Tuning - none

 

if ur thinking of getting the ebay electric SC. DONT!

 

whats wrong with an electric SC?

 

I hope your joking....do a search on here for electric supercharger

 

they don't work....they are an intake obstruction at best.

 

A lot of the aftermarket turbos run around 6-7 psi of boost out of the box, and my understanding is that they fall into the (rough estimate) range of 170-180hp with no additional mods. On stock compression and calibration, it's respectable.

A stock MSP makes, what, 175hp on about 6 1/2 psi, so it's in the same league as the claims from the aftermarket companies.

As for electric SC, don't be fooled by false claims and a low price. With FI, you gotta pay to play. Figure around $3000-3500 for many of the turbo kits on the market. Currently, there are no SC kits on the market, but (hopefully soon) Matty will change that.

 

Dont do it. More than an obstruction---I just read in - what, Import Tuner mag, I think, they did a test with this goofy electric SC. The result, no gain for ANY vehicle
they tested it on and most of them showed a LOSS of HP.
Plus, it's a drain on your electrical system.

 

the aftermarket turbo's are making 180+ WHP...the MSP make 170 CRANK HP,more like 150WHP...so actually, not really in the same league...dont think 30hp makes much of a diff???...ask any of us 1.6ers who tried to race a 2.0L guy...that's ok though hi-boost is about to change all that...FEAR the ZM-DET !!!!

 

It's got me scared!

 

I have found thru the tuning shops that we work with that a good estimate is 5% of your baseline hp per psi. BTW, that dosn't stack on top of one another. Example...

hp x .05 (to find your multiplier) x total psi = gain from boost

Then just add your baseline for the total. Some make more, some make less. This somewhat takes into account the rise in temp from boosting. Run a good intercooler and you should see close to these kind of gains.

 

this is still NOT true. There are WAY more variables than just your starting bhp level.

fyi: The BEGi turbo kit with intercooler and haltech f10X (owned by Ken@protegegarage) made appx. 10hwp per psi. My WOMP supercharger with NO intercooler and haltech F10X made 13whp per psi. That's a 30% difference in power. Why is that if we are both using the same stock engine??