Ive noticed this since day one and never thought anything of it till I had the level and tires installed, the tech was questioning the noise but never dug into it.
I go weekly. Granted I live 100 miles away but we go nearly every Sunday after church. With my level and tires it’s always an edgy trip as I get home usually with 50-80 left. Before you say it’s the level and tires it was the same on the stock setup, but the i4 trip can avg at the right time...
In regards to all the ones saying its dangerous and scary have never been around a Mercedes S Class, or Lexus ES. Those cars are dead silent when reversing, the engines dont make even a whisper
Did you get any errors. The ICE directions say to TCM PCM, and other module learns. Did you need to do all those steps or was it write the new value and clear errors?
I have the stealth sub and amp setup for the BO system on order. If it impresses me I will use SGS entire plug and play upgrade they have. What sold me on them was Dean from FiveStar giving them a glowing review. If you are a car audio guy and you dont know who Dean is from the clean wire...
The question is how far you want to take it. I know this is an old thread but for those that dont want to guess. I have this
https://soundsgoodstereo.com/products/stealth-kicker-ks-series-5-channel-passive-pre-tuned-plug-play-behind-the-seat-stereo-upgrade-b-o-including-unleashed