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Old 12-30-2012, 09:29 AM
Matthew540i Matthew540i is offline
Matthew540i
Location: Seattle,WA
 
Join Date: Dec 2012
Posts: 1
Mein Auto: 540i
e39 1997 "g-force" performance chips?

Any advice on increasing performance with these type chips?
Do any work without damaging engine?
Looking for better mileage and/or horsepower.
Any info would be appreciated...
Thank you.
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