This Bel-Air particular makes the problem worse. The MSD is mounted inside the car, not under the hood. In fact it was hidden up under the dash and we didn't find it until half way through the installation. The exhaust is composed of a set of black Jack headers to cherry bombs. So right out of the shoot this car is a problem. Not to mention the customer is on a budget, a tight budget, and unfortunately he has really good taste. I sharpened my pencil and got to work after cutting the profit down to a slim margin We agreed on a system that would sound terrific in just about any car.
We installed the gear, and it sounded great! Of course it had engine noise! We called all over town to get the MSD cap to filter out the ripple and it sounded great with the engine running...on everything but the radio.
You see the cap will fileter out the noise from the power source, but not the antenna. When electrons travel in a closed coil the generate radio frequency, radio tuners look for radio frequency antenna's hunt for radio waves.
So what do we do? We re-wired and move the MSD to the fire wall. It got better but it still had noise in the on the radio. We again re-wired and moved the MSD to the fender...even further. Now we only get interference on weaker stations in the lower end of the band (the resonant frequency of the ignition must be close to 94 hz). At the end of the day, it was pretty darn good. and we couldn't have gone to all the extra effort if the customer didn't buy the gear from us. Weather it's Electronics Depot in Altamonte Springs Florida or any good local shop, wants the car right and the customer happy. Even if they have to stay late, and do that little (or a lot) extra for free.
Patrick Siebert
No proof read sorry
Customer asked for Black kick panels...just sayin
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