Originally posted by oceansize
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EVERY car needs a retune if you change injector sizing, not just the E46 M3, so yes they are plug and play.Instagram: @logicalconclusion -
Did you change the fuel rail side o-rings or just kept with whats supplied on the 063 TT ones?Originally posted by Altaran View PostSo some further info regarding the o-rings:
The o-ring on the nozzle side of the factory injectors fits onto the new ones without issue.
The o-ring supplied with the 063 injectors should not be used. It's possible to push it into the groove, but the OD will increase from 14,4 mm (on factory injectors o-ring) to 16,15. It may be possible to push it into the bore on the itb assembly, but it could be very annoying to remove again after some heat cycles.
The extension of the nozzle into the itb assembly barely changes from stock injector (17,45 mm) to 063 (17,28 mm). Spray pattern is V-Shape on both. So after removing the plastic disk, it should be more or less the same.
The nozzle side o-ring is BMW part 13647830611 spec'd at ID 9,3x2,62 mm.
I wasn't able to find an o-ring for the application in this size, I may order Elring 135.500, it's 9,2x2,8mm so just slightly thicker. BMW branded o-ring is over $11, which is just ridiculous.
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I just received my order of top and bottom OE o-rings from FCP, but will just only change the nozzle side o-rings when my injectors come in if the fuel rail side ones dont need to be changed2004 Jet Black/Impulse Cloth SlicktopComment
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Good to hear, thanks for that infoOriginally posted by Altaran View Post2004 Jet Black/Impulse Cloth SlicktopComment
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