Guys after about 1 1/2 years of having my HKS EVC, Defi Link and HKS Turbo timer control units under the driver's side dash, they are falling off. I tried to redo the tape with 3M all temperature tape and 1 week later BOOM, they fell. Then I tried Locktite high temperature tape and again BOOM. Now I bought some "fasteners" that are like velcro from 3M to do the work and put them on tonight but what if after tonight they fell again. So anyhow, they seem to be holding for the night but now that temps during the day in Socal are rising this toys keep falling off.

If they fall again by tomorrow what else could I try? Anybody have this units under the dash with tape that lasts? At first the tape the shop who did the install lasted for 1 1/2 years but now they wont even last a week after I put them on. Im frustrated because every batch of Velcro or tape is around $7-$8. I also dont want to face the embarrasing moment if I open the door of the car when Im with someone else and seeing the units hanging off the dash. Not a pretty sight.

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a closer pic with different angle would help