ahaha funny i just did this exact same thing today except i have the roush CAI. so i remove the MAF so i can remove the insert to allow for the 105mm. as im putting it back in i drop on of the MAF screws but lucky i caught it in time. sorry to here you weren't so lucky. hope you get it soon.
same noise, sounds like a pop or 1 loud click in reverse or low speed with uneven ground. only got eibach sport lines installed. OCD is off the charts with this and cant figure it out.