Has anyone done it before. I'm set up to do it this week and im just curious at what results others have had with this kit on their b18b.

 

we have had many people use the PeakBoost kit on LS engines, and generally see ~300whp@10psi on a good tune.
feel free to PM me with any questions
also, check this thread out, you might have your questions answered quicker here:
https://honda-tech.com/zero...30084

ken