[Snowblind]

Monitoring kpa is a thing and I watch it religiously. Their was a H/C car strapped to a dyno at my local shop, had a MSD and ported 87. I forget the numbers he put down but I saw his kpa was down to 94 (we are at sea level for reference) on a pull. I had the guys take my 95 off my car and swap it out while still on the dyno. 24 hp gain with no other changes.