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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Intercooler sprayer.



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      05-07-2007, 03:45 PM   #1
de.abeja
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Intercooler sprayer.

The Suby STI has a water sprayer from the factory, comes on under full throttle when activated. We (in the US) have the empty battery box that woud nicely hold a gallon tank of distilled water and a pump. Or is this just not practical?


First post, picking up my 335 in a month and a half.
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      05-07-2007, 03:53 PM   #2
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Hmm and we also already have a somewhat high pressure sprayer with the headlamp washing system. I'll bet it could be done. Have to check that out. Thanks for getting the brain working.

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      05-07-2007, 06:43 PM   #3
de.abeja
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It doesn't even need to be high pressure it is all in the nozzle(s) the more finely atomized the water the better.
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      05-07-2007, 06:52 PM   #4
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Given the modest boost these cars run stock, I doubt you will get any performance improvements. Maybe with a procede.
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      05-07-2007, 06:59 PM   #5
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If anything a Co2 sprayer would be better than water. Probably cheaper than a water pump.
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      05-07-2007, 11:23 PM   #6
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Quote:
Originally Posted by de.abeja View Post
The Suby STI has a water sprayer from the factory, comes on under full throttle when activated. We (in the US) have the empty battery box that woud nicely hold a gallon tank of distilled water and a pump. Or is this just not practical?


First post, picking up my 335 in a month and a half.
Well, you'd have to ask AA if they would do it for you, but, the XEDE has a spare driver circuit to control Intercooler Water Spray directly - mapped relative to RPM and operating boost pressure. You'd have to figure your own tanks and nozzles though unless you can convince them to do the lot as a kit or something.

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      05-08-2007, 12:42 AM   #7
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I always figured the windsheild washer would be perfect since you already have the tank with pump and a switch on the steering column. You would just need to run the tubing to the intercooler.
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      05-08-2007, 11:31 AM   #8
de.abeja
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Quote:
Originally Posted by LOK11atXEDE View Post
Well, you'd have to ask AA if they would do it for you, but, the XEDE has a spare driver circuit to control Intercooler Water Spray directly - mapped relative to RPM and operating boost pressure. You'd have to figure your own tanks and nozzles though unless you can convince them to do the lot as a kit or something.

Cheers
A JAZ 1gallon fuel tank from a kids dragster and a small 12v pump work just fine. I have put them on other turbo cars before (RX-7's can damn near cook a t-bone on their intercooler after some hot laps.)
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