I had my cans on for weeks with out ecu, air filter, and o2 senser plugged.
Ran good, not any better than before. Had a chance to do a track day, but I did not have my tools to do anything but bot the ecu. It ran fat, but safe.
last weekend I had a chance to run on the dino at the dealer after setting the TP. Wow, the fuil air is FU. At 8000 rpm it was so fat it was off the chart, and started loosing HP.
I will now finish the job, and try for a new dino run.
BTW the dB killer were in. I wish I "they" had time to pull them for one more run with dBs out.