I just bought a 06 Evo 9 and I am already looking at some upgrades for it..... The first thing was going to be a blow off valve and for that I was looking at the turboXS type H. So I called them to confirm that the one that they had for the evo 8 will fit the evo 9 and they told me it is a really bad idea to run any blow off valve on the evo due to the mass air flow sensor which when a blow off valve is put on it makes the car run at a very rich state.......and it wont ever run correct and it will stall out alot. This is where I am at now and I would really appreciate any help with this situation and any suggestions for a good bov or other options! Thanks!
