Just wondering what boost I would see on a stk L (Currently @10PSI...TB, CAI, BST BYPSS) when I get a 2.7 upper pulley. 10PSI to 12 or 13PSi maybe? Also will a 2.7 upper slip with the stk lower? And I won't need tuning for right now wil I? This just an intermediate planned mod, saving $$$ for the bigger plans in ther months to come. Thanks Guys appreciate it!!!

 

Personally I would recommend a lower pulley first

 

i got a 2.7 upper and i can get anywhere from 11 to 13 lbs (total)of boost depending on how cold it is outside and how fast im going

 

Thanks, and no slippage problems with the 2.7 right?

 

Thanks, and no slippage problems with the 2.7 right?

Wrong. I had slippage.

 

I agree. I would go with the crank pulley first.

 

Crank...............

PEacE..................
Jim

 

Crank first ... The onl;y reason I see for the upper is that
anything over an 8 pounder scrapes the lines on the bottom !!!

 

I had to slot the hole on the flate steel supporting straps to the lines you referred to, so that I could move then down slightly away from scraping the pulley (6 pounder).