i hydro-locked my last motor and i replaced it and ever sinse then i have poor throttle response under 3 grand it has a slite buck when im lite on the throttle, i have the jdm s-afc and when i turn up the fuel it goes away but thats not the way i want to fix it, but after 3 grand it rips. i have a b18b1 in a 94 h.b. with all bolt ons, high flow cat & n1 exaust so i know it's not that. I also noticed when I've been driving for a while and i park it for a half hour or so and then go to drive it falls on its face and i have no power for about fifteen sec. and then its fine. it throws no lites but could it be a sensor? I've done all the work my self but anybody elses imput would be very helpful.