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Oh Haha Oh Haha is offline
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Join Date: Oct 2003
Location: Michigan
Posts: 14,096
Here's a thought:

wcc(Bill) has an 87 930 that didn;t seem to be putting out all of the power,either. After replacing the boost spring and the exhaust with a GHL muffler, the car is a freakin' rocket.

The only thing we can figure is that the cat. converter was clogged ,at least partially. It was removed when the GHL was installed. He has headers but they are not installed yet.

The dash guage read .8bar just like yours and you could hear the wastagate working.

It's a longshot but you may want to have the tech check it out. If you need your cat for emissions you may need a better/new one.
1981 911SC ROW SOLD - JULY 2015
Pacific Blue

Old 11-11-2007, 05:14 AM
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