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RE: backfiring
new guy said 2008-07-14 00:07
I am in the process of buying an s40. One thing Iwas concerned about is the backfire issue. I have heard on other forums that a mild performance carb upgrade will totaly fix the problem. They say the epa makes them run to lean and causs the backfire. The upside is if you have it done you´ll have more power.