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    89 7.3 IDI is Loud

    Thanks for the responses, no there is a big drop in decibels when the cold start is off and I think IP Timing is working fine. Just didn't know if maybe there was like an intake manifold w/ baffles or something that I could bolt on and make the engine a little less noisy. As far as power goes...
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    89 7.3 IDI is Loud

    My 89 7.3 is defining when cold and still loud when warmed up, it seems that trucks only a few years younger are much quieter. Is it the mechanical injection that is making all the clatter?
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