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1453 Views 5 Replies 4 Participants Last post by  AcidLotus
I have the Cartech 2005 FMU on it's way.
how hard is it to install/tune?
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from what i heard its pretty straight forward to install.

you should have it tuned on a wide band dyno or else you might make it too lean and fuck up your motor or too rich and fuck up our environment....:D
Definitely easy to install, and tuning will have to be done on a dyno with a wideband O2 sensor.
Tuning doesn't HAVE to be done on a dyno, but it is a lot easier and safer.
OK, I'm sitting here looking at it.
how do you tune it?
I see the large allen screw in the center and a small twist type valve on the side. what is that? what does turnig it do?
PM Gvtec. He has one and should know quite a bit about it. One is for the actual fuel pressure, and the other is for the rise rate (what you want the fuel pressure bumped up per PSI, for instance 5:1, 4:1, etc.)
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