whats going on srt6 family..sadly i do need some advice with what to choose and if anyone could help me. let me apologize before hand if anything i am about to ask is stupid, i just really dont know the answers or what to do. Before adding a cold intake system should i do something first to the srt6? or is it ok to add that to a factory srt6? also from needswings if i do choose the intake is there really a big difference between the teflon velocity coated dual intake and the thermal coated dual intake? again i am sorry for the dumbs questions but i read the descriptions and could not get anything. is a dual intake system worth it? or should the single one do? one last thing until next time lol. i dont know what might be causing this but if anything could tell me that would be great when my car is in park and running sometimes my car will begin to shake back and forth noticeable. idk if its the spark plugs misfire or what but after i drive it and turn it off and then wait about 15mins later to turn it back on. while its on and i am in the car i notice the car literaly moving side to side like its shaking like its "cold" haha. let me know please. private message me if you want.