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I was having mid yellow boost on my 99 Viggen as well. Checked all hoses and cleaned the BPC with compressed air. After that didn't work I decided with 53k miles I would just change out the MAF. Bought it from genuinesaab.com and installed in 10 minutes. Took it for a ride and WOW! I now have my Viggen back! I never drive it hard, but it's nice to know it's there when you need it. I think all too often the BPC's are being changed when it's actually the MAF that's the culprit. With all the Piston issues it also gives you good peace of mind knowing you have a new MAF. Good Luck!
posted by 64.190.11...
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