Impeller

[Duke]

I recently put an oil cooler on my sn2000 and got 1.5 lbs of boost i was pushing 7lbs now i am at 8.5 at 5000 r.p.m that's with a stock impeller. How much boost can you expect from a high performance impeller?

[Michael]

With the high-output impeller from Paradise Wheels, I think you will see an additional 1.0-1.5psi of boost, which would get you to 9.5-10psi. But that's rough... you'd have to install it and see what the actual result will be. But for the cost (about $100 or $150... not sure), it's worth the price.

[JPJP]

Duke, what fluid are you running? Did you change brands or anything else? That is a great gain. I am wondering if it is more than a temperature change that took place to get that much of an increase in boost.

[Duke]

I am running ford type f, i get it from the local ford dealer so its genuine motorcraft. Also i'm running a 3.5'' blower pulley im only over spinning it by 200 r.p.m at 5000 r.p.m also it cooled the supercharger down tremendously that's why i got more boost.

[Sulaco1976]

Where are you fella's measuring your boost at? The headunit or Vac Tree? Just curious as that seems like a lot of boost on a stock impeller, but if thats the case, then that cool bud, the more boost ya get, the better =)

[Duke]

I am measuring the boost out of the upper intake manifold.

[JPJP]

Vacuum Tree is traditional method I believe.

[Duke]

My brother hooked that up for me under the upper intake its a gt40 he said you want to get closest to the engine, that way we know how to exact how much boost your producing, so we can tune this motor exactly.

[JPJP]

That is good Duke. It's the same place the vacuum tree hooks up if I am not mistaken.