Limiting factors of boost.

Regulator23

New Member
Oct 1, 2019
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While trying to raise boost levels through my electronic boost controller into the upper 20's , I seem to be stuck at 23lbs.
Admittedly, my te44 bb is getting tired which may be the cause, but I would like to eliminate other possible culprits before replacing the turbo.
I am reading boost through an Autometer mechanical guage. After the te44, comes a Turbonetics Racegate with 8lb spring, regulated with an Exhile electronic boost controller, Cottons FMIC and 70mm throttle body.
I guess I am just asking how an experienced Turbo Buick guy would systematically go looking for what is limiting boost in this application.