It wasn't like that in the beginning I installed it 10 month ago but it started doing that few weeks ago I'm starting to think it might be a vaccum leak cause I feel the idle is lower and kinda late throttle response/loss of power
I have the roush catback installed on my 2018 mustang GT and I have noticed some weird suctioning noise when I rev in idle when the rpms goes back down I hear some weird noise wandering if this is normal and if anyone knows what's wrong.
thanks.
I have a video that you can hear it but it wont...