boost comes on strong but as engine rev's up boost creeps to zero?

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Aug 21, 2007 | 10:55 AM

#21

Slowhawk

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From: Bridgewater,Ma

Quote:

Originally Posted by Spires

NIce and dry out but problem still there.. Get this, even at low boost 5-6psi, the truck will run like raped ape to 6psi then drop down to about 2psi then take off again up to 6psi then drop and so forth... I cannot figure out what the hell is going on here.

Is it rpm related? Are you describing going through the gears?.

Aug 21, 2007 | 09:21 PM

#22

Spires

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Staging Lane

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Ahhh I got it! Turned out I installed the boost control regulator improperly.. I had Rick from STS mail me the instructions as I lost the originals. I saw that the regulator goes off a tee from the boost reference line and regulates boost to the BACK of the wastegate, applying pressure on the back side of the diaphram. I simply had the regulator In-line on the boost reference line.