LewmaticDC2
New Member
when i start the car it feels like its backfiring and when i look at the back the muffler shakes while this is happening. the tach would bounce like its struggling to keep steady power, but when its warmed up it stops and idles is fine. car drives fine but this happens only on cold start ups. i've changed the spark plugs and wires and use fuel injector cleaner but it still continues. no loss of power or hesitation while driving. what do you guys think? its a 94 RS with 122,602 miles on it
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