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DDDD DDDD is offline
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Join Date: Jan 2007
Posts: 1,077
Originally Posted by 911st View Post
Just an opinion. The B&B's are a nice system and a major improvement over the early US heat exchangers. Most know of there propensity to crack over time.

I believe there wast gate design is suspect. It adds unnecessary volume to the system and has been known to trick the WG into delivering a higher boost than spec. If one adds a turbo like a K29 or a HF with the smaller hot side and a big compressor wheel it exaggerates the WG issue and can make for over-boost. I had a .7 bar tial and some times pulled 1 bar do to over-boost. This and the lower restriction muffler seems to be where they get there HP.
My boost gauge always reads exactly what I set my boost level at, with a OEM wastegate.

I am not sure you can blame the B+Bs if your tial can't handle the air flow. I have heard that Tial's are complicit in the overboost phenomenon with aftermarket headers, but I am no expert.

Last edited by DDDD; 01-21-2009 at 05:55 PM..
Old 01-21-2009, 01:11 PM
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