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  1. Go Faster
    Hey everyone - upgrading my IS' injectors and fuel pump (800cc to 1300cc and Walbro255 to 525) as I make the switch over from a Greddy E-manage to a Haltech 2500. I've been searching online and wondering whether anyone has been able to properly fit a Walbro525 in their IS? If so, what was the...
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