HKS SSQV IV Blow Off Valve (Silver)

The HKS blowoff valve definitely has the best sound out of all blowoff valves. Looks great in the engine bay as well. I’m loving letting off of the gas and hear that crisp chirp sound! One issue with the mustang ecoboost is that if you let off of the gas at low rpms (3k-5k rpms) you’ll get a bit of turbo flutter but at high rpm’s there’s no problem