my um hot? air intake makes a good increase in mpg and seat of the pants. plus it sounds great!!
i can tell. but its a 460 and a k&n fipk it seals to the hood and gets air from the wheel well

 

The stock 460 intake system is quite restrictive considering how much air this motor can use so it benefits more from intake upgrades than the smaller motors.

 

a good, high flowing exhaust does wonders for the 5.8.

 

thank you

 

I am certainly NOT trying to pick a fight, but seat of the pants is somewhat subjective. Do you have before and after dyno runs?

When you replaced the factory air box/cai, you made absolutly no other changes such as plugs, etc that might have changed the mpg's by thereselves? And, I would assume that to be fair, you did install a NEW and unrestricted STOCK air filter before running a factory stock baseline to compare mpg's? After all it would not be a totaly fair comparison if the factory system was not in proper operating condition BEFORE establishing a baseline.

I would agree that the 460 can use a bit more air flow, but only if you are operating outside of the normal rpm band that most of us use.

Simply put, at the normal 1800 to 2800 rpm operating range most trucks are nomaly operating in, the factory cold air intake is more than adequate. Nothing to be gained here, other than more noise and a perception of greater performance - After all if it makes more noise, we must be going faster!

BUT, again if you regulary operate at above 3500+ rpm, then yes, a definate gain can be had. Not sure I could afford the fuel running around at those rpm's though...

Just my two cents - David

 

^^^ isnt modifying a vehicle at all for the moments when you need to bury the gas to pas or get on an on ramp? or when towing when you need that extra to pull off the line and keep the whole rig moving? if i was just gonna baby foot around and not be ready to get out of my way or the dumb young teen on her phone doing her make ups way then ide ride a bike.lol
and i had stock then the drop in k&n and now the fipk. theres an obvious diff. and no i dont have a dyno or cheap access to one. haha. i guess i could insert k&ns proven performance dyno sheet here. but its from there site and could be biased. so ill fray away.
all im saying is i see the benefits of k&n. there are probly better ones, but im sure a free flowing intake is always better then the restricted "detuned" filter design all vehicles come with

 

and no i didnt change a thing prior.
if you drive sane i can see the differnce. regardless its a 460. i expected this horrible gas. but its a damn fine engine

 

1. You can add a bronco rear tank. They are like 33 gallons.
2. No tuners or chips. 6 liter tune up with a timing bump would be your best bet
3. I would do a leveling kit and AAL in the rear. ( cant help you with brands)

Cold are intakes get alot of negative reviews on here but getting good results from them has alot to do with the design of them! I run one with great results as well as almost everyone on NLOC with Lightnings with the results to prove them.

I would do the 6L tune up, good exhaust,a GOOD CAI, and E fans.

 

i dont mean to be negative about the CAI but even with the mustangs they are not liked at all. its hard to seperate the filter from the motor. no matter where u put it its either susceptible to massive amounts of excess heat or tons of dirt and the possibility of water. it makes it hard to see the benefits due to these. my father in law added a set up to his 88 f250 4 door long bed 4wd and the only benefit he got was hitting the gas harderr to hear the suction noise that came with it. i had the same problem with my 89 5.0 lx i had. best thing to do is go by what u feel and want in your truck and test and tune stuff. i totaly agree about nice wide open breathable exhaust. and the 6 liter tune up and go from there. like previoulsy stated im not looking for an argument just stating my .02 worth as well

 

everyone that i know that has a mustang ,me to , don't use the factory air box , they use aftermarket , good for around 10hp in the higher rpms , thats been proven on the dyno many times ....Lew

 

maybe we should make a cai thread. ima hop on that..
back to topic haha

 

You do not need to improve the intake on any of these trucks, it is quite sufficient for stock engines. Its the OTHER end that needs opened up, the exhaust is very restrictive.
Real gains can be be made and felt, with LT headers and high flow cats with larger diameter pipe.

 

Yeah there is a lot of debate on the whole CAI(open filter) thing, most of the engines in this series of trucks gain little from it when they're all stock, but they can benefit once the motor has been upgraded to breath a little better. I have seen dyno results demonstrating negative effects on fuel consumption on MAF vehicles resulting from fan wash disturbing the airflow over the MAF sensor when it has an open filter attached directly to it. And I have seen dyno results showing power gains from swapping the stock airbox for a "CAI" open filter. Both of these results are possible and both could occur at the same time on the same engine, and that's mainly because we know it takes more fuel to make more power. So while I believe it is possible people will see power gains with a CAI in some cases, I doubt many will report simultaneous fuel milage increases.. more likely it will decrease in the short term until they get over the thrill of flooring it to make that new noise.. much like when a new exhaust system is installed.

 

The Y pipe on F-150s is ridiculously restrictive in its design, F-250/350s not so bad.
The big cork in the stock set up IMO is the exhaust (made to satisfy EPA, not power or mpg) I have seen little to none improvement with stock rigs with any intake "improver's" However, stock engines seems to get a real kick from taking the cork out of the exhaust end.

 

I tested the intake system on my old SD 5.0 truck after I installed a full MAC exhaust system on it. The exhaust produced significant gains in performance over the stock system so as most people do I figured the next logical thing to do would be to improve the air intake system. So as a test I completely removed the intake plumbing between the airbox and throttlebody, and to our surprise it made no difference whatsoever. That was about 10years ago and I now know what the choke points are in this motor and that the stock intake system is nowhere even close to being restrictive, the 5.0 simply doesn't move enough air.. even with an upgraded cam.