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Discussion Starter · #1 ·
Anyone ever had the condition where the
boost has a little fluxuation? I was pushing it in second
and it was like something in the system was being
indecisive about allowing the boost curve to continue or
to bleed it off. Is this a waste gate issue?
 

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Could be any number of issues.:)
Ignition, Fuel , poor connectors on APC box, ECU, Fuel pump. (List is darned near endless)Timing, Blowby Goo in the system (Solenoid, IC, Throttle body etc etc) Faulty vacuum hosing . Seriously suggest folloeing the Bentley/saab "boost diagnosis procedure.. boring, tedious.. but it works.. there is no other way in my experiences.
I think 3rd is a better gear to 'test' boost under.
I believe the Wastegate Actuator either works or it doesn't.. assuming it's correctly set to Base boost level for your year/model. Faulty/tired spring results in low (base)boost, ruptured diaphragm results in wild overboost.
 

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Discussion Starter · #3 ·
Lots of these threads reccommend the bently manual so
I'm starting with that and the base boost check.
I've done the standard bolt on mods so maybe this is my
machine's subtle way of asking to be dialed in a little more
accuratly. Thanks for the tips.
 
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