Is something wrong with my boost pressure??? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Is something wrong with my boost pressure???
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Posted by Richard P. (more from Richard P.) on Thu, 1 Feb 2001 10:58:24 Share Post by Email
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Lately (in the last 4000 miles or so) I've noticed that my boost doesn't go as high sometimes as it does other times. For instance, I can start in any gear above first @ 2000rpm and floor it and the boost will go to/into the red and stay there. If I am doing 3000-3500rpm or above in any of those gears, my boost only goes 1/2 to 3/4 into the yellow. Also, if I start in second gear @ 2000rpm and floor it the boost will go to/into the red. When I let off the gas shift to third and floor it again, the boost will only go 1/2 to 3/4 into the yellow. Am I shifting wrong or is my engine lacking something?

It's been about 5K miles since I changed plugs (BCPR6ES11 gapped at .039). I may go back to a .037 gap, which seemed to work a little better. I also have adjusted base boost by one turn and have a modified airbox with K&N filter.

Any other ideas?

Richard P. '99 9-3SE HOT

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