I have a 97 Dx with a B16a2 Swap. Everything worked fine after i did it. But this what happen i hit a big dip in the road n got off all 4's like 2 feet came down n bent my tow hooks n hit my oil pan [dident dent it just scrap] Everything is fine still together and runs. But now my vtec wont engage my oil is full everything seems to be good. And my motor runs but is running kinda lagging like ill punch it and it dont seem like its pulling how it use to. Any help on this im clueless?

 

sounds like a broken VTEC bushing.