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Weird sounds, loss of power and tymar intake. Coincidence?
Recently got a 96 f250 4x4 club cab with 280k on the clock. Just did the diy tymar intake. Now the truck makes strange noises when cold. Not too sure if its a coincidence or not. An intermitent groaning sound comes from the left side of the engine bay when its driving while cold. It almost sounds like the filter is vibrating on the wheel well where the filter is resting and when the noise occurs, there is a small sucking sound from the opposite side of the engine bay, kind of down by the passengers feet. When this happens power decreases, and when I gun it, it goes away. Once the truck has been driven for a while it seems to be fine.
I watched today and when it lost power I looked at the gauges. RPM's stay the same but speed decreases a couple MPH.
I'm tempted to reinstall the original box just to see whats going on but thought I'd ask you guys first.