Very good passes this time of year. I don't even know how you can be out there in the middle of the day. I feel nearly heat exhausted working in the garage.
I see no reason to not go with the 4.0 or 3.88, I'm running the 4.13 on a stock longblock. Your built motor breathes better which is likely why you havent seen a boost increase.
I work for Costco. We require masks to be worn. If you state you have a medical reason precluding you from wearing a mask we will not require you to do so, but we absolutely have the right to ask you to leave.
Most of the tests you see are of a ported 18 vs a stock Boss. The Boss needs to be ported as the stock runners have a smaller cross section than the '18 or a CJ. I picked up 1.5mph by porting my Boss.
Congrats on the new PB. What did you upgrade? Is this from last Friday? looked like rain was passing right over the track so I decided last minute to stay home. Going tomorrow night for sure.