Hi
Mine too as the exactly same thing

I put a new muffler and new pipes. And put back the o2 sensor that the past owner took off. IT's help a lot.
I know I have a too rich mixture. I don'T know how to fix that. (check engine light up some time, code 25-26)

I'm not sure about the timing.


Guill
88 4Runner 22RE 4x4
Montreal Canada
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