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bens4s

digital boost gauge install questions

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Im attempting to install a new boost gauge in my s4s. It currently has the original electric gauge. Has anyone replaced their original with a digital read gauge? Will the original wiring work, or will I have to run the new harness? I would think I could retro fit the new gauge and sender using the old wiring. Anybody done this?

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I did it many years ago on my S4s and used the existing wiring. Probably depends on your gauge requirement for wiring.

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I installed an autometer digital boost /vacuum gauge. I did have to run new wire. I ran 18/3 wire from gauge to engine compartment. I replaced the transducer and rerouted the hose to achieve vac and boost. It took around 2 hours and works perfectly. If anyone has questions pm me. It's much easier to read psi digitally for me than the cheap bar gauge that came with the car. Plus now I have a vac reading which should help if I get any leaks.

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