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      11-09-2012, 10:38 PM   #4
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Drives: 335i e92 FBO
Join Date: Dec 2011
Location: miami

iTrader: (19)

Originally Posted by DSC_OFF
Thanks, ideally I'd like to avoid paying up for any expensive backing plate and just stick on a 2.5" flange onto my existing oe plate. However, the plate on my car isn't flat throughout and any flat area is too far out, not close enough to the hub. I know it's easy to bend the material but have to first see nothing will get in the way. Else I may have no choice but to buy an expensive Turner/BW plate and use the coupler.

The hi-temp hoses are good up to 600*, the standard is 300*. The high temp couplers I've found (used for intakes, turbos, etc) are good for 500* so I think I'm ok on that front.
I experimented with custom brake ducts just for fun and just sold mine as I am going to a dedicated track car. Lessons learned: use 2.25 inch, 3 inch will run on tires at full lock. I used a silicone coupler to attach neoprene dual coated ducts to the flange on backing plate to get beat of both worlds. Place flange close as possible to center I backing plate for more air. You can also bend the backing plate inward to get more air. Remove plastic shrouds around Intercooler that are useless and put the tubing there.