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bypass valve for CAI

393 Views 2 Replies 3 Participants Last post by  woodrell
wsup jus wonderin if the bypass valve is necessary for an AEM CAI for the 1.8t, or can i ride around w/o one? plus, i dont think they make the bypass valve for the 1.8t yet, or do they? any info is great, thanks
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Re: bypass valve for CAI (ioiwin)

you should never use a bypass on our cars..carbonio says so

Can I fit a bypass valve to the Carbonio system?
Any device that is placed in the inlet stream compromises intake performance. For those customers, however, who are willing to sacrifice some performance for peace of mind, commercially available bypass valves do fit the Carbonio system. Please note below, however, that bypass valves may be unsuitable for certain applications
The bypass valves that are currently available are designed to operate under longitudinal loads (i.e. forwards and backwards along the axis of the valve's centreline). If these valves are installed improperly, in such a way that they operate under lateral (i.e. side to side) loads, they can break prematurely, and in some cases, cause broken bits of the valve to enter the inlet tract. As more Carbonio systems are introduced, we will indicate the suitability of bypass valves on a case-by-case basis.
The MK4 VW
The engine compartment in the MK4 VW leaves no room for the installation of a bypass valve, except on the portion of pipe that lies immediately after the Mass Air Flow (MAF) sensor. A bypass valve does fit here, but results in the valve operating under lateral loads rather than the longitudinal loads for which the valve was designed. As a result we recommend that you do not install a bypass valve on any MK4 VW.
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Re: bypass valve for CAI (ioiwin)

Dude, I just drove around yesterday in a damn monsoon thunderstorm we had here yesterday. It was hailing outside! I had to run through huge puddles of water on the roadways. This was the first I really ran my AEM CAI in the pouring rain, so I stopped at a gas station to check it out underneath where the filter was. It looked like water splashed all over the filter down there. But it was still driving great. Today I checked it and it was dry and clean. I was impressed.
You would have to submerge it in a lake to suffocate your engine.
I still don't even think you could get water to run uphill in the intake pipe towards your MAF.
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