Lancer de problems
 

So I have a 2012 lancer de and I've only put a cold air intake under the hood and opened the exhaust a half inch bigger from the rear suspension to a cherry bomb glass pack. Since I've done this, trying to get up to speed has been weird. It almost seems like it's either not getting enough fuel, air or something. I'm not sure if someone has had a similar problem and could help me out. I'm not sure if I need a tuning since I did that work or it's something else but I wouldn't think it would need tuned with just those things done.