Another jeffescortlx 1996 Ford Escort post...
How to lower boost with a internal waste gate.
When a normally aspirated engine is turbo'd, you usally want to start with the lowest boost pressure possible, most OEM turbo's with a internal waste gate are set to 8psi. That's fine if your your confident in your tuning, but with just a FMU for engine managment 8psi can be too much. A Boost Controller can only raise the pressure above what the waste gate spring is set to, the waste gate needs to be modified to open at lower psi. There are 4 main way's to do this, Spring Swap, Rod Lengthening, Choke Spring, or Push Back Spring. Some have there advantages and disadvantages.
Tools needed, ^cutter as shown, possibly a grinder and welder.
To split the waste gate, you need to locate the seem and fold back the crimped edge. I needed to grind off the rod were it was mushroomed over the spring cap. After the new spring was installed I then spot welded the rod back on the sprin...
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