Just wanted to add to this thread..I was pulling 4 codes on my 98 (Cant recall exactly what they were now but I'll dig them up again, P1124, P1126, P1128 and P1130 seems to ring a bell? Let me confirm again though) After lots of reading on here and other forums, I figured a faulty MAF was the culprit. Tried to clean it a couple times with no luck..check engine would come back on within 20 kms.
I picked up one of the ebay MAF's. The MAF came from Carparts Wholesale and it cost me $48.00 plus $2.50 for shipping to Ontario Canada. I figured at that price, it was worth a shot. ($400 were my local quotes) I called to confirm and cross reference part numbers (both the bosche and porsch numbers) to make sure it was the right one for my 98.
Arrived yesterday morning, at first glance it looks identical, only missing the "bosche" logo. Threw it in yesterday afternoon and all good so far (crossing fingers) Drove around last night for a couple hours (150 kms give or take, highway, through town, trying to get all driving conditions) enjoying the last few sunny mild days and it's working perfectly!
No check engine light so far, much smoother acceleration (above 5k where there was a very slight hesitation) drives like a new car again!
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