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Registered
Join Date: Aug 2000
Location: Ann Arbor, MI USA
Posts: 34
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That waste gate shim is a pain, but if you don't put it in, you will be running kind of rich and will not have the extra power from the chips.
most chips for 951's make thier power by managing the extra boost that a shim or boost controller provides.
I had weltmeister chips in my 88 951 before it got stolen and I broke all but one of the studs holding the waste gate when Trying to install the shim.
I went with Autothority on my 87 and they are simpler and faster (13.43 w/ weltmeister vs. 13.21 w/ autothority)
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