4.0L V6 Technical DiscussionsAny questions about engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!
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i know for the most gains you need a tuner ,but if i were to put on a cold air intake from k&n ,or drop in filter which is better ,my goal is to start small and work my way up .has anyone had any of these does it throw codes,any inputes on this subject thanxs guys
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Vehicle: 2006GT/Gone but not forgotten/2008 Shelby GT500 now!
Drop in filter will not get you any more power.
You need to go with a CAI WITH a TUNE.
I wouldn't even go K&N.
I'd go C&L or JLT or something along those lines.
I can't stand K&N.
Back in high school I remember there was a group of guys that thought their drop in K&N's meant they were friggin' supercharged or something and they were gaining 0 from it. Got on my nerves SO BAD! lol!
Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
It's sort of like comparing if stepping in a Great Danes poop or an Alaskan Husky's poop is better. Actually, the stand-alone CAI will beat the drop-in but they both stink, IMO. There's no sense bothering with the CAI w/o a tune. Save your $$ for a tune-required CAI.
A stand alone CAI may net you 2 -5 HP, at higher RPM range and is not real noticeable. Majority of the performance gain comes from a custom tune, not the CAI. As others have stated, save up for a CAI/tuner combo.
Ford Racing has various performance packages. I purchased for my 2010 V6 the package that consisted of dual exhausts, drop in K&N panel filter, and reprogramming of the computer to use 91 octane fuel. This setup if installed by the Ford dealer keeps my warranty intact. They put the exhausts on and the K&N filter but not the reprogram of the computer because he hadn't ordered the programmer. The dual exhaust change and filter solved the problem i was having with the car stumbling starting out in first gear. I go in tomorrow to have the new computer software installed. Ford claims the dual exhausts, drop in filter and computer reprogram increase the horse power by 12 hp. The drop in panel filter flows 441cfm as opposed to the stock paper filter flowing 319 cfm. This 441 cfm flow is within the range of the stock mass flow meter. Based on my experience i would think a K&N drop in filter would be worth while even without any other modifications.
A CAI and custom tune combo from a reputable performance company can net you between 15 - 20 more HP. Without going F/I, dual exhaust is another minimal performance gain, which may only be a 2-4 HP gain. Dual exhaust does allow better sound and visual.
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