Went on a trip to Lake Tahoe this weekend and I was able to watch the boost with the newly installed boost gauge.
On the level it was about 3 and when we started up a hill it would go up to about 6 and then dump down to 3 again.
All the way to Tahoe it kept repeating this action, go up and then dump.
Why does it do this?
I have read that most if not all do this on the 93 and earlier engines.
Can I make a threaded rod and spring to take the place of the wastegate controller?
If so, should the spring be hard to compress or easy?
Is it try one and see how it goes?
I also watched my new EGT gauge and it showed that the gas went up and down fairly fast too.
Pulling a hill we slowed to about 40 and downshifted to third gear. The heat went into the 1100 range but didn't go higher and when we crested the hill and it shifted back to fourth gear the heat rapidly went bacl down.
Thanks for any info on the boost bouncing problem.
John
in sunny Clyde, Ca.

An intake or exhaust leak maybe, look for oil on the intake side and exhaust around the crossover gaskets.


Making a homemade controller is easy if you have a welder or can borrow on for just one weld.

The spring should be harder to compress than your factory spring. If you don't have a welder just bend on end of the rod 90 degrees about 1/2 in in. The use e-clips on both sides of the waste-gate arm. This will keep the rod from moving back and forth in the arm. Then you can put a spring and wing nut on the other end for adjustment.