Smaller pulley but no more boost?????

[JMarsa]

Prochargers are setup to your exact engine specifications.(compression/cam specs etc). more area in the compression chamber the less boost you have.. (theres probobly more to it than that)

Please don't take this the wrong way, but I find that hard to believe that ATI modifies each unit. My understanding is that ATI has several models that are standard and as mentioned in this thread and in many others over LS1tech.com thier tensioner performs less than sufficient for many people.

I understood your PSI reference to be describing boost. Most peope refer to boost as what's measure out of the discharge outlet of a forced induction unit. Otherwise your talking about cylinder pressure.



As stated, the best way to understand pressure drop is to measure at the begining of this path and at the end just prior to entering the intake manifold.

--JMarsa