blackmica08
Member
- :
- 2008 mazdaspeed3
has anyone here had any backfire on their ms3, mine has been doing it lately, i cheked everything exhaust, dp, race pipe, theres no leaking of any kind, all the couplings are tight just fine in the fmic. it might be the fact that im running a little too rich. i had the ecu reflash done at the dealer today but it backfire anyway.