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My ep3 is down on power between 15 and 20 bhp between 7 and 8k rpm, and around 5 to 10bhp down around 4 to 5k rpm. The car is being helpful and showing no codes The car is not misfiring, stuttering or feeling sluggish. It's had a new timing chain, tensioners and guides, a remap so all fueling etc should good. It doesn't use much oil, perhaps half a litre per 1k, and no regular smoke. The valve clearances I did last summer and I understand they don't need adjustment after a new chain? Checked the spark plugs which were a little white, I haven't checked coil packs or injectors. Recently changed the vtec solenoid gasket. Recent oil change too.
My thoughts are the cat could be plugged or there is some other restriction? The fact it shows no codes makes me think all sensors are fine, TPS for example.
Not sure where to go next and in which order. Is there any test I can do to check exhaust flow?
My thoughts are the cat could be plugged or there is some other restriction? The fact it shows no codes makes me think all sensors are fine, TPS for example.
Not sure where to go next and in which order. Is there any test I can do to check exhaust flow?