I have an 2009 4.0 liter 5 speed standard. I would like to do some upgrades and could use some advice. I was thinking of the Ford Motorsports dual conversion with cold air intake and tuner. I was also thinking of some headers. I heard the tuner for the Ford setup only is set
up for one particular tune. I like the thoughts of dual exhaust but don't want
it overly loud either. I'm not sure what to do. What about underdrive pulleys,,,I would also like to try those E-3 plugs. Without going to crazy in the money as it still will be a daily driver, what would you suggest?
P.S. It already came with a stainless single exhaust which may or may not
mean anything.

Thanks 4.0 stanger

 

Spark plugs are not going to make the car faster. Don't bother with high priced plugs. I don't know what tuner your looking at, but a tuner and cold air intake combo is the best bang for your buck, other then nitrous, on the 05+ mustangs.

check out www.vmptuning.com to get a tune from a real tuning company.