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      07-05-2018, 03:48 PM   #1
The Wind Breezes
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Drives: 135i N55 DCT
Join Date: Apr 2015
Location: USA

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Meth jet size in charge pipe

Stock intercooler, downpipe, MHD stage 2 w/ 20/80 ethanol 93 mix. Max IAT seen, over 190*F!

Thinking about running a Snow #2 / 100ml nozzle in the charge pipe for more cooling. I did the math and it should reduce IAT about 20*, plus the anti detonation benefits. The car has no fueling issues without meth, so with this small amount there should be room for the stock safeties to work in the event of flow stoppage / uneven flow. I realize optimally I would spray a lot more meth, like a #5 nozzle, but I'm very concerned that much will satisfy the inner cylinders but leave the outers dangerously unsupplied.

So for those running meth on stock turbo for cooling, how much are you spraying?
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