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jrb55gh · 07-19-2016, 07:46 PM

I understand from many posts on this forum that the Gen 3's lean the mixture. That is the reason they increase performance when installed by themselves. That with the muffler delete may lean it beyond what the ecu views as normal. Thus your lean code for both banks. A tune would fix probably the problem.

Just curious what the more experienced experts on the forum will say.

07-19-2016, 07:46 PM	#2 (permalink)
jrb55gh Base Member Join Date: Mar 2013 Location: DFW Texas Posts: 149 Drives: '13 370z black 7AT Rep Power: 12	I understand from many posts on this forum that the Gen 3's lean the mixture. That is the reason they increase performance when installed by themselves. That with the muffler delete may lean it beyond what the ecu views as normal. Thus your lean code for both banks. A tune would fix probably the problem. Just curious what the more experienced experts on the forum will say. __________________ Ecutek \| DIY HR350 upper plenum \| DIY ported lower manifold \| TurboXS cbe \| FI rhfc