I recently purchased a 2007 Mustang GT (California Special) I immediately started with the mods. I started with a GMS Cold air kit, due to not having to do a tune, according to the advertisement. After I installed the kit the wrench light came on, and then the engine light. I had no power at all. I pulled the negative battery cable to no avail. I called GMS and they said it’s probably the jumper for the MAF. Anyway, they are sending me another one. From what I’ve heard, they are full of crap. I guess I’ll see soon. Nevertheless, I also order a BBK 62mm twin T-body. Does anyone have any experience with these mods? Will I have to get a custom tune? Please, any help would be greatly appreciated.
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