I finally got around to removing that fat white resonator from underneath the filter box in my F22B1 (vtec) 97 accord to augment my HKS panel filter.

Stupidly though instead of filling up the same petrol to compare the before and after performance, I filled up with vortex and now the car seems a bit less responsive at low revs (below 4000)- did anyone else find this? Or is the car just less surgey and I'm just feeling it to be less responsive?

What does other ppl who've done this before think...