Restrictor

[ProvenPerformance]

Can someone please explain the theory on restricting the AFC line to me? I've heard that a guy should either install a 90 deg fitting from TST or custom make a "jet" to insert in line, but what exactly is the reason? I've got the stock fitting on my AFC housing and I build 35#'s of boost pretty quickly. I thought I was happy with it, but the more I read, it seems like I may be missing out??? If someone could please take a second to fill a newby in on some theory, I'd greatly appreciate it!
Thanks in advance.

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1995 4X4 2500, Reg Cab, Auto 3. 54, 90,000 miles, K&N filter, Autometer guages in tripple guage pod, Bosch plate, HS Idle screw bottomed;
1993 HD XL, 125ci (2050cc) S&S Long Block, 4 3/8" X 4 1/8", . 725" lift cams, 12. 8:1 CR, S&S Super "D" carb w/stack, Bassani exhaust, Modified frame and 3" over swingarm

 

[illflem]

The idea of the restrictor is to slow the opening of the wastegate. The wastegate is a pressure activated exhaust bypass that gives you more boost at lower rpms but limits boost in the upper rpms in order to avoid overboost. Your 35# sounds great to me, anything more is a waste. More boost also equals less mpgs, something you may not want.

 

[Missouri Mule]

I have read in several post that you don't want to go over 30 (or 35 #ad
) but some get into 50's.