After swapping around my intake and adding a functional scoop (which lowered my intake air temp 30 degrees) I'm getting a code on the truck and the Edge says its running too lean. I haven't hooked up my edge to the computer yet to get the exact numbers, but will I eventually burn out the pistons or plugs because it running lean?

 

Hi.

You've discovered 2 things:

1. Ram air intakes are an (avoidable) risk.
2. A canned tuner cannot possibly hope to cope with the detailed tuning changes required to make this mod safe.

Time to do the research:

https://www.f150online.com/forums/sh...0&postcount=11

Meanwhile, remove the intake or risk some damage.

Cheers
Bubba

 

MGD,

I'm making an assumption in saying theres way too much air getting forced into the motor... (thats how its set up now, with a scoop right above it, bringing the clean air in)


now if its just a matter of too much air, would a restrictor plate help me?

 

I do not understand how it can take in so much air,that it runs lean. I can understand how you can restrict fuel and run lean, but i don't see how that devise increases the air volume over stock volume.

 

The MAF(Mass Aifrlow Sensor).Ramming that much air past it is probably screwing up the PCM trying to compensate.
Mr Troyer of Troyer Performance probably has a more elegant explanation.

 

Hi.

Good question. I don't know.

It possibly could, but then you could still be flirting with disaster, since lean conditions do not always set CEL's (that's been documented).

My point was, only actually dyno'ing your truck with A/F's, on road will determine the whether your setup can be made safe, and it can still be a crapshoot - and an expensive one at that (as was detailed in the link).

If you 'dumb it down' to the point where the ram air provided fresh air indirectly, you'd retain the look and some of the benefit, without the risk.

Might want to call Mike & discuss.

Cheers
Bubba

 

conceptually, i'm thinking its almost how a turbo works, forcing more air in, which would intern need more fuel to run stoich

 

yeah, i just PM'd him

 

A couple bad things i see...

You moved your MAF in a bad position.
You have a breather filter on the PCV system.

If i was Mike i wouldn't even bother touching your vehicle seeing those in place.

 

what do you do in the rain?

 

anthony, the breather filter just replaces the breather hose that goes from there to the intake tube, which is exactly what it is, a breather.

secondly, i know the MAF sensor is in a bad position, but tell me... where would you put your MAF if you had the JLT intake? (Same place)

and lastly, if Mike was a good guy, which i'm most certain he is, he wouldn't not touch it, but explain to me where i'm going wrong, and what to do to remedy it.

Riken - the rain doesn't even touch it... I was skeptical myself, but after an hour commute through driving rains, it was dry as a bone. (haha... dri-bone...)
anyways, the hole in the hood isn't the entire size of the scoop, so the water finds its way through small weep holes in the back of the scoop

 

Many of the '04's ran lean straight from the factory. Some as lean as 15/1. Mike has given much information on this issue, and the options which are basically limited to "custom tuning". That is the basic reason that many have chosen his custom tuned XCal-2's as he adjusts the A/F's to compensate for the stock lean condition, and for any aftermarket intake modifications....
You are risking several internal damage to your engine running in your present configuration. I suggest you remove your present set up immediately ..

 

As much as that is true it will modify the crankcase pressue. The pcm was not indended to make adjustments based on that pressure so you may be running askew. The only modification i suggest on the pcv system is a oil catch can.
Anytime you *move* a MAF/MAS you need to recalibrate the maf_transfer_function in the PCM. It is also suggested to have a couple inches of free space behind the MAF for the best reading.

Now considering you like your system and don't want to change it here is what i would do... Get some tubing in between the MAF housing and TB where the intake can be pushed as far foward as possible. On that piece of tubing make a nipple so that you can run your pcv system.

 

I guarantee you that his '04 is and has been running lean since day 1...
Adding what you suggested will do absolutely NOTHING to address this issue...
It is only a matter of time ....

 

Hi again Dribone;

On the topic of the JLT, please keep in mind that:

1. It is not a true Ram Air intake ( no positive pressurization)
2. JLT, in big bold letters on their web site, specifies that Custom tuning is Required to use their intake.

Marc's right - take it off until you get a chance to get it tuned for properly.

Remember - Dad is always right

Cheers
Bubba