Cold start with factory muffler/resonator delete and cold start with black widow venom 250/resonator delete. Will do a better sound clip video once I get a resonator reinstalled.
update: check out this video to hear flo-pro twister and for more than just a cold start.
[ Ссылка ]
#f150 #f150tremor #f150mods #blackwidowexhaust
![](https://s2.save4k.ru/pic/D458GicmiB0/maxresdefault.jpg)