I have been letting this blower loft along for far too long so I got a few things to help it out.

New PTM 95mm throttle body on left, stock 76mm on right...


back side comparison of the two...


I am currently running a ported stock throttle body with a 4" pulley making 5.5-6.5# (dependent of weather). With the 3.25" pulley and throttle body below, I should be pushing close to 15#.


I am going to change just the throttle body first to see if I gain any boost with the 4" pulley then I will install the 3.5" to see if I get the 11-12# I expect; then will move down to the 3.25" for 14-15#. I anticipate having some belt slip with the 3.25 so I will be getting some 100mm idler pulleys to add some belt wrap until I can do the 8-rib swap.
Should be fun once I get it tuned out.

 

Nice!!you Converting To A 4 Bolt Tb?

 

Step up to the plate! Nice looking TB unit. Post up your results here!

 

The KB J-tube uses a 4-bolt flange. I am currently using an adapter to use the stock 3-bolt.

 

15lbs ought to do it. Are you tuning yourself?

 

Yes, with HPT. I am currently running a MAF tune but have a 2-bar map sensor on the way so I can convert to 2-bar SD.

 

Got the 3.5" installed along with a new belt (110.5") and some new intake piping. Took it for a quick drive this afternoon and saw a steady 9# on the first short hit. Second time I tried it the boost gauge was floating between 6-8# so I presume I am getting some belt slip which was confirmed by the maf readings on the scan. I have two Billetflow 100mm idlers to add now. Just have to figure out some spacers for them. Now for a few pics...
Before:


Now:

 

sweet setup! Should run good!

 

Looking good Kenny.

 

Very Clean..... is the first pick stock from KB?