Do you have a good base map?maf and injectors? Tuning without a wideband is not totally safe, but you can do the old way.check plugs and muffler but remember that a lean condition can melt your pistons in no time
he has a wideband, the lc1 is a wideband, if your mapping it yourself as long as you can datalog your afr's you should be fine. id still rather have all working sensors if it was mine though.
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