KIRT

Already have a CAI and a mag exhaust. Is this info not showing up on my signature? Ya, I noticed a improvement with the CAI and mag but the lag is still there and still very noticeable. To me any lag at all is unacceptable. Time for a tuner!

Buck

Yup I hear ya. I have a CAI and magnaflow exhaust. but there is still that lag, and still kind of a dead spot in the higher RPM at freeway speeds too. I cant wait to get me a tuner.

Tybo XLT

Add everything you can. I have an 05' with the 4.6L and I have magnaflow dual exuast, K&N 77 CAI, and the edge evolution programmer and I killed an 04' king ranch off the line.. there's no more lag when you have all three of those mods

BOwnz4

Just a little advice, if you have CAI and exhaust get a CUSTOM TUNE!!! I had an edge Evo that was great at stock but after CAI and exhaust (magnaflow) It drove ok just something wasn't right on stage 2 and 3. I guess w/ the mods I did it runs lean and the CAI drones really loud right after talking to Bill at PHP i sent it in for a gyphon - 35 bucks and am waiting for it and custom tunes, hopefully that will work. On a side not stock w/ CAI and Mangaflows it almost has no delay at quarter throttle and it spins the tires.