5.7L Supercharger bypass defeat

[jjhu00]

anyone figured out how to defeat the boost bypass valve on the new TRD superchargers for the 5.7L engine? this procedure will enable constant boost from the supercharger in any rpm range rather than wasting it through the bypass loop for fuel economy sake.

[TRDatVT]

From prior experience with a actuator (bypass) valve on the TRD chargers... The bypass valve allows for reduced wear (on the supercharger and the belt) and drag on the motor during normal around town driving. Defeating the bypass can be done usually by simply removing the hose that allows the valve to see vacuum (thus it will see atmospheric pressure always). I do think this is unecessary and will cause reduced life of the internals as well as unecessary reduction in power and throttle response during around town driving due to increased load on the motor and no boost... ALSO, the supercharger will NOT always produce full boost (although it will be at full boost alsmot immediately after 2000 RPM)... removing this valve probably will not improve performance at all.... Just my $0.02

Josh

[fzust]

Actually, defeating it is really bad. The bypass, just keeps the S/C from sucking against a closed throttle plate, cavitating, and super-heating air. it is vacuum activated, so when you get your foot in it, it closes and you get full boost when you need it. Bypass is a good thing. No downside.

[bulldog11267mad]

this is kinda on and off topic but does anyone know of a smaller pulley for the trd supercharger? and has anyone made a custom pulley? if so how much more power did you get?

[tinik]

There is a company that makes oversize crank pulley (to increase your boost)... As far as getting smaller pulley for SC I don't think its possible to get one.