vikingdiesel

I got ec pulley, ec mid headers, full 3" exhaust, no cats, tune, heat exchanger, belt wrap kit, tcu... What kind of boost should I see?

HeissRod

There is a chart floating around that shows what the calculated boost should be with each pulley combination, so you could start with that. However, you will see a boost loss with headers and a free-flowing exhaust, so the chart wouldn't be spot-on.

Ls1toAMG

vikingdiesel

I have a 83mm eurocharged supercharger pulley and a stock crank, so what size is the stock crank?

HeissRod

154

Your ratio would be 1.85, so slightly lower than the 168/90 combo on that chart.ound the

Hammer Down

I assume 90 is the stock sc pulley size? If so then the boost is correct I remember Jeremy saying something about 15.1 lbs of boost during our road tune

vikingdiesel

What's the 168/90 combo mean?

HeissRod

For stock crank + 83 upper? No way. According to that chart, it would theoretically be around 13lbs.

168 lower/90 upper

vikingdiesel

I thought i have 154 lower and 83 upper

HeissRod

You do. I said your ratio would be close to the 168/90 combo.

vikingdiesel

OT: whats the benefit of the fixed SC pulley over the clutch SC pulley?

Hammer Down

It's been all over the board that I have a 185 crankshaft pulley. My question was is the stock supercharger pulley 90? If so then the chart is accurate.

HeissRod

Gotcha. You're post made it seem as if the OP should have 15lbs.

Hammer Down

My bad I thought I mentioned something about my road test with Jeremy