I experience this all the time on my vt2-600 kit (DCT). It happens usually at higher speeds and higher gear (4th gear and higher for me).
Example: If I'm going 100 mph in 4th gear and I want to slow down to 65 I used to be able to let off the gas and just downshift. I now have to use the brakes as well. If i just downshift the car doesn't really slow down (it does decrease speed but slowly compared to n/a)
It's my only complaint with the supercharger.
100 WHP M Floor Mats | ESS VT2-600 Supercharger | Arkapovic Evo Exhaust | KW V3 | 19 inch BBS CH-R | Vorshlag Camber Plates | Arkym CF Lip/Rear Diffuser | Front/Rear Cam | 6NR Upgrade
Coming Soon: Brembo BBK | M Performance CF Spoiler | TE-37SL on Nitto NT01