| All my work was with just a Dual Pop - and it would idle rich so I added the drivers side pipe on the passenger side with the hose. [ http://300zx.hopto.org/images/motor.htm ] I am running a single MAF since I had no issues with that setup. I have an extra MAF in the kitchen but not worth the effort to install it since A/F was even. The dynos on April 8 also included me moving the wideband between passenger and driver exhaust. All my dynos have been posted for a while as well. [ http://300zx.hopto.org/300Z/dyno/Zebra%20Z/ ] The 21st folder is the most recent but low end was lacking on those pulls. With the viewer you will see that I don't have this "lean" issue at 4-4.5k since it shows A/F This was my latest fuel map. 
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