Quote:
Originally Posted by RvsBmw
Would you ask if they will make an elbow + airbox (front part) or if they are willing to think about? Don't want too buy an eventuri kit too (don't have one atm). They make that for the e9x v8 too:
Thanks for asking.
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I checked on realoem and the E46 part numbers are different from the Z4 part numbers. I imagine that if Karbonius were to make a CF version of the airbox and elbow, it would be for the M3, not for us Z4ers. I have asked anyway and will let you know what they say.
They have come back with responses to my other questions:
Q. There appears to be quite a lot of flex in the top of the plenum. People have expressed concern that this could result in the unit failing over time, probably where the two parts are bonded together. Is there a way to strengthen the top? Or do you think this isn't needed?
A. Yes, a lot of flex on the top, this is because this unit was made without the inner pilar reinforcement, we are installing a inner reinforcement ( like the ones we are using in the CSL airbox) and we will test again, I hope not to loose too much sound!! Anyway ,I´m not worried about the union between 2 pieces, I´m sure will not fail on this area, we are using a very good glue, it support a lot of cicles of flexion and traction
Q. Is it possible to order the plenum without any logo or writing on the top?
A. Yes , no problem, we could send it with the Mpower sticker separately ( not glued under the varnish)
I also asked about the rubber coupling and they advised that their plenum is designed to work with part number 11617830265. This is part from the CSL and pre-2004 M3.
https://www.realoem.com/bmw/enUS/par...&q=11617830265
Can anyone confirm if Z4 and post-2004 M3 rubber couplings work with the CSL airbox? I have never read that they DON'T, but would like to confirm as the rubber boots are quite expensive.