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What I did...
Posted by Joe98 (more from Joe98) on Tue, 29 Aug 2006 10:06:27
In Reply to: Base Boost, Alex C., Tue, 29 Aug 2006 08:37:44
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Went to local auto parts store and bought a boost gauge. I disconnected the vacuum line from the port that feeds the dash boost gauge (plastic "T" fitting coming out of the intake manifold, line closest to the firewall) and ran a long line from that port into the cabin (just pass it through the open door jamb...nothing fancy, it's temporary).
Disconnect the electrical connector on top of the APC boost controller (thing on top of the radiator next to the coil, 3 hoses coming out of it), get the car fully warmed, and then go for a drive. I found it easier to have a helper look at the gauge while I did the driving, but if you're careful on the road, you can do it yourself.
You will need a long stretch or road (preferably a hill) so that you can maintain 3000 rpm's (keep it in 3rd if stick, don't let it downshift if auto) at WOT (wide-open-throttle or pedal-to-the-metal) and look at where the boost is on the gauge. Then adjust it accordingly.
I found mine to have been at 4psi, and it took 6 full turns (360 degree turns) of the waste gate rod to shorten it enough to bring the boost up to 5.8psi (where it should be for an SPG, which I now have due to tweaking my APC box).
After all of this was done, I put the gauge back in the box and returned it for a full refund to the auto parts store. I made sure the gauge and box were in brand-new condition, and told them that it didn't fit in my dash.
Good luck!
Joe
'93 900TC 157K
'98 9000CSET 97K
posted by 69.119.150...
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