hershizzle

Noted! Thanks for the advice.

I've been looking at doing just the exhaust and tune on my 3.6. How much of a difference did you notice?

Good morning! I'd like to start off by thanking everyone for their posts in here. Ive been lurking this forum for the past two weeks trying to get a better understanding of my vehicle and what options I have for modding it a bit. About 3 weeks ago I purchased a 2018 Legacy 3.6R. It has just under 50K on it. I've never owned a Subaru before and fell in love with this car. It is beautiful and smooth to drive. Eyesight is also great! At first I thought it was the CVT and it might still be part of what I'm feeling but when I'm driving and the engine isn't fully warmed the car feels like it's studdering while accelerating. It's hard to explain, kind of a rubber band feel. This morning while I was waiting for the car to warm up while going to work I decided to rev the engine while it was cold and the engine shook pretty badly. It shook the entire vehicle. It has always had a small rough idle while cold. Things I have done to the car since I've gotten it: -Cleaned the throttle body -replaced the spark plugs with ngk iridium lasers -replaced pcv valve -replaced serpentine belt -replaced both rear shock absorbers (passenger side was leaking) -replaced OEM battery -cleaned MAF sensor -changed conventional oil to synthetic with new oil filter -installed new air filter Is the rough idle while cold a normal thing for these engines? I did not purchase a warranty for this vehicle, the dealer warranty ends in July. Curious if this should warrant a shop visit. When I arrived to work this morning I revved the engine in park and there was no engine shake. Thanks for reading.