My setups is as follows: ZZP intake with no cold air box right now - had to use a 2012 Regal MAF sensor as it is the only one that fits into the slot of ZZP intake tube. Of course I had to swap around the wires on the sensor so the connector pin out would be correct. So I replaced my big stock Verano sensor with a small Regal one. As you can imagine, the car did not run at all until I copied and pasted the MAF calibration table from a Regal file, then disable many DTCs. I am sure this is causing a lot of issues but it is the only way to get a high quality intake onto this thing. I must tune it smooth and reliable eventually, I believe it is possible with HPT. Also I am running a TurboSmart BPV to replace the ugly stock bypass valve on the turbocharger that is plastic with a rubber diaphragm and may fail under high boost. In addition I have full custom exhaust: again a Regal ZZP dowpipe with only 1 bung and the latest PLX wideband in it. Then a 3" straight pipe with one large Magnaflow resonator for sound and just two of the factory mufflers remaining in the back with factory tips. So all cats have been eliminated (in total the pre-cat in stock dowpipe, stock resonator, main cat, and one of the 3 factory mufflers all gone). Other than that the car is on Mickey Thompson ET Street drag radials mounted on the factory 18" wheels. ECM / TCM are tuned with HPT. I had EFILive and was able to get pretty far with only engine support, but my trans. was hurting so I bought HPT to firm the shifts and raise line pressures. Once I found out how much more can be done in the engine as well, I never looked back. I run 93 octane pump premium gasoline all the time, usually from Chevron or Shell. And I change my engine oil about every 2000 miles with Pennzoil Ultra Class Synthetic (5w30 when available or 0w40) and filter of course. And I add some bottles of off the shelf octane booster every now and then, and Seafoam once in a while (will do a lot more now based on this thread). Car has 18k miles now and is daily driven. So there is my complete setup, my intake and down pipe are both perfect fitting high quality ZZP parts specific for LHU, and the sensors are good condition and exactly where ZZP placed them.
Yes, I am desperate to eventually have everything very smooth and balanced. My car does have a lot of trouble with transitions. I thought I could move up the power and then smooth it out, but I must revise my whole strategy. I am all ears and will absorb any wisdom shared as a sponge. Truth is we race every day here and I am able to win, and my car hasn't blown up yet. But I know it will, and it could run a lot better too. That's why I am here!
I REALLY don't want my car to run lean! I don't understand why it does, several things that are throwing me off I will post about later. My goal TODAY is to try to command and maintain the AFR in PE you are suggestion here.