I just installed my Airaid intake system on 04 5.4L, drove for ten minutes and got a mil light (check engine light). I don't have a scan tool so I am not sure what the codes are. the truck runs great from what I can tel so not sure what it is. Anyone have this problem? I am hoping it's just a lean code, if so, is there anyway to richen it up without buying a programmer?

 

No way to richen it without a programmer and the risk of running lean is hardly worth the benefits of a CAI on a 2004. Get custom tunes!

 

04+ engines it is a common issue to run lean after installing a CAI. you will need to have custom tuning done to correct the issue. no way around this.

 

So what's going to be my best/least expensive tuner for this truck?

 

SCT XCAL3 with custom tunes from PHP, VMP, Troyer, or 5Star is probably your least expensive (new).

Of course, you may find a sale or a used one.

 

First, decide if you want the gauge display you get with the Gryphon. If not, then go with the SCT from VMP if you want it in a hurry. Personally, I would pull the intake off and order a Gryphon. I love the gauges.

 

X2

Why take the risk?

 

x3. Put the stock back in. Do the DWV intake mod or w/e its called which is just upgrading ther tiny 2.5" intake tubing to 3", more air flow, and safer for then engine due to no MAF relocation, and filter in the same location.

 

04's run lean from the factory my friend- do a search

 

ok so i just ran a check with the snap-on modis and saw that the o2 sensor showed a slight lean condition. not enough to run the risk of damage. also ran it on the emisions dyno and saw my worst A/F ratio of 15.1:1 at wide open throttle at 4100 rpm the rest of the range was 14.7 so its running ok.

 

15:1 @ WOT???

WTF? That's insanely lean for WOT Open Loop operation - it should be in the 11 to 12:1 range...

You would also need to log the Load, TPS, and ignition advance, IAT, Open Loop flag, etc..., for a more complete & meaningful sight picture ...

You were given good advice above - including searching for the massive amount of info on this exact issue - but you didn't did you? You would have recognized unsafe operation immediately if you had.

Take off that intake fer Crapsakes ... PLEASE


Yer freebies - read up ( these should be dang stickies )

https://www.f150online.com/forums/sh...91&postcount=6

https://www.f150online.com/forums/sh...23&postcount=9

https://www.f150online.com/forums/2971722-post10.html



MGD

 

Thanks for the advice. I did however run the dyno with out running the calibrator first (doh!). So after calibrating I ran it again with all the adaptives and keep alive memory reset. She ran fine showing a perfect a/f ratio of 14.3:1 threw out the rpm range the leanest point was at 3700 rpm at 14.8:1. The factory setting a/f ratio is 14:1 as requested by the ecu. Oh and by the way a a/f ratio of anything lower than 13:1 is considered excessively rich! If the truck ran something that low it would never pass California emissions and would not be certified for use in California or the us. The perfect stoichemetric a/f ratio is 14.7:1 and anything over 15.3:1 is considered dangerously lean for the motor. The ecu in the f150 is designed to, under certain light load conditions, to run a 15:1 a/f ratio for fuel economy. Oh, and just in case your wondering where I got my info, I know several ford engineers tbhat worked on the f150 and other ford vehicles two of them are powertrain and driveability engineers so it's credable. I also spoke with Airaid and they said there intake will not cause a lean condition in the vehicle and will Not run outside the f150's adjustable limits, which means it can adjust safely for the added air. So basicly I should have just asked them first lol. Thanks for advice anyway I do appreciate it.

 

I feel bad for your truck



good luck on the rest of the decisions in your life

 

X2 on the Really feeling bad for your truck!
11-12.1 is the ideal area to be in, MGDfan is correct.
Bill with PHP would also concur on those numbers.

 

no i would trust your ford engineer buddys if they are in fact what you say. but also you have people on here who are very knowledgeable and are trying to help you to not kill your truck. tho not every single truck will be effected by the lean condition, it is still a high risk. and airaid, the company that you bought your intake off of for $300 or whatever tells you that their filter and tube is not going to hurt your $25k+ truck. but will they pay for it if your trucks engine dies? they might say its warranteed or whatever but thats only until something actually happens, then you probably wont even be able to get anyone to pick up the phone there. i have a K&N CAI on my 08 V6 without any tunes and it does fine, and its been on for 1.5 years. its your truck, if something happens, good luck getting someone but yourself to pay for it. hopefully it doesnt. if it were me, i would play it safe and put the stocker back on there until you get a tuner with custom tunes for it. then install them at the same time. its your call shall you choose to accept it. good luck! we are all counting on you. this message will self destruct...NOW! BOOM!