I have a bf Falcon ute with dedicated LPG (work car) My stereo set up consists of the following HU- Alpine CDE 147BT Front- vibe black air compnents 130WRMS Rear Soundstream SSTV2.69 130WRMS SUBS- 2x Rockford Fosgate T112D4 Speakers run off - Alpine MRPF600 4ch Subs from- Kenwood KACPS917D Now my when I have it cranked, my ute chugs and s..ts itself. I have installed an additional 2 x 55Ah batteries in series with the original battery I have doubled the Altinator cables and ground cables from the batteries and distribution box. But it still does it. I changed spark plugs yesterday and it ran well for a day then s..t it self again today. Is it possible for the audio amps to mess with the car ignition or computer? Does anyone know of a fix?