First update with Racechip RS on Stinger 2.0. Let me start by saying that I traded in my 2015 Optima SX Turbo with 274 hp for the base Stinger. I've outrun a base Stinger about a year ago in the Optima and always wanted to know how the Optima would fare against a Focus ST.
I didn't have to wait for more than a day after installing the Racechip RS in my Stinger. While at a stop light with 3 lanes, a Focus ST made a Uturn from opposite side now headed in my direction. I'm pretty sure he saw me at the light with my bright parking lights on. He accelerated with his exhaust blaring. Low and behold, he was at the next stop light in the middle lane.
Of course, there wasn't a vehicle in the lane I was in. I thought about rolling to the light thinking it would change before I got there, but it didn't. I had no choice but to pull up next to the Focus ST which had aftermarket parts stickers, etc. I said to myself, here goes nothing with a tiny thought of GT remorse.
The light changed and I went half on the throttle until I heard his engine race and saw the red color of the STs hood through my front windshield.....and then I nailed it. That was the last time I saw the red paint until I looked back through the rear passenger's window. I could see he was trying to race and could hear his engine racing. I had also realized that as my Stinger changed gears, my rear tires chirped with Traction Control on and the Stinger was off and gone. That time that I looked back, the ST was a full car length behind and noticed that he gave up before reaching the next light.
I can honestly tell you that before the Racechip install, regapped plugs and K&N drop in filter.....that ST would have ate me for lunch. GT remorse was put to rest after that. The Stinger was in Sport mode and the Racechip was set on mapping 5. I will try to get quarter mile times at a track later this Spring and possibly a Dyno Test. For now and at 1500 miles on the odometer, I will let everything gel for bit more and enjoy my new performance boost.