What I do is find some 1/8" ply or such, and make little squares to mount it on allowing air to go under it, cant remember if the da ignition has the little u shaped recessions allowing for a servo grommet, but if it does, thats what I use, then use screws to hold it down, all sides do not have to have air flow, but the general unit needs to have some as well as space underneath it, are you mounting it on the motor box on the outside? also if you dont want to use screws zip ties or velcro works too.