Like others, I have thrown an overboost code with the 181 (with the sl55 intake) .. only on a cold morning (3 or 4 times). If you are not throwing codes at 23, that is surprising, but good news.

If you want to start over, cutting on a stock sc pulley .... I have an original one that I would happily trade for yours (if you cut it down to 65 first : ) .... I will even cover the shipping.

Chris