again, what were your air fuel number readings?

 

Aren't the gains from any of these cold air intake systems minimal at best, even when properly tuned? 10% power gains mentioned in this thread seem pretty high, most actual dyno tests I've seen are more in the range of 5-8 horsepower and maybe 1 mpg increase. I'd be willing to bet the average joe would not feel the seat of the pants difference of 7hp on a 6000lb vehicle. The perceived gains are more likely coming from an increase intake roar that makes it seem like you have more power.

 

The numbers I have seen were 5-8 without custom tuning and about double that with custom tuning. As has been said, the Edge tunes are for a stock intake. One interesting test, Bill at PHP just removed the snorkle from a stock intake(the rubber piece that goes into the inner fender), and if I remember correectly, got a dyno gain of 13 hp with the same custom tune he was using to test a CAI. As I recall, he got 16 hp with the CAI. This was on a 5.4.

 

FX4Life, I'm going to "quibble" with one of your earlier posts. The OEM intake is NOT 3 inches. If you measure the diameter of the snorkel opening, it's only 2 inches. If you simply remove it, or replace it with a 3" diameter tube (the "Gotts Mod") you get a 3" intake.

Now, that may not seem like a big deal, but the cross-sectional area of a 2" intake is only 3.14159 square inches. While the cross-sectional area of a 3" intake is 7.069 square inches - 2.25 times as much! (Which means, of course, that you can potentially pull in more than twice as much air at a given time).

As long as the MAF sensor space is not altered, Bill Cohron has said the sensor there can measure this airflow accurately (and it won't change anyway except at high RPMs). The lean problem has been with some intakes that alter the sensor environment. I frankly don't know if the S&B intake falls into this category. And, I imagine that good R&D can design around this problem too.

- Jack

 

Yes the MAF sensor housing is larger on the S&B. Just like nearly every aftermarket cai. Otherwise you wouldn't be gaining much power by just throwing an open element filter on it. The power gain is in the MAF tube size.

Just for example.. The 2005+ Mustangs use a MAF tube that is 83mm and than aftermarket MAF tubes are 90-95mm. JLT even makes a 110mm MAF tube for the 2010 Mustang!

 

Yea, I was referring to a OE intake with the Gotts modd, and/or the snorkel removed. I was trying to give the OE intake a fighting chance I guess I was unaware how big the snorkel was, so thanks for that info

 

please enlighten me how you can claim this will not run lean without providing air fuel numbers?, do you even know how lean the afr can be from the programmed mixture before the cel comes on? one final note-waiting for a cel to come on to tell you that you are running lean is playing russian roulette, you may want to do this with your engine, thats all fine and dandy, but don't give out advice without substantial proof that it is running right to other members.

 

Well If I had that information still, I would be happy to provide it. If I had enough time to go and test everything again I would happily do it just for you. If you want to come down to TX and swap between intakes, run the dyno's, and monitor everything your more then welcome too (you can pay for it all too); I have no time in the foreseeable future to do this. If I'm successful in finding everything I'm looking for online I'll be sure and link it up for you.

I can also ask you the reverse question; How can you claim that every intake HAS to be custom tuned, because you know for a FACT that every intake makes a car/truck run lean? How can you explain all the people that run intakes for years with no tune and never have an issue? So... I guess your misleading members too then?

You don't like my argument, and I don't like yours; You think mine is invalid, and I think the same of yours. I'm not sitting here asking you to provide proof that every intake causes a lean condition, and warrants a tune. I don't doubt that some do run lean, I also am pretty sure there are more intakes out there installed without a tune doing just fine.

Am I saying that all intakes never cause a lean condition, no. Am I saying that you should not get custom tunes to go with your intake, no.

Am I saying I firmly believe that you don't have to get a tune just because you installed an intake, yes sir. Am I saying that a custom tune takes full advantage of your modifications, yes sir.

 

We're cool. That snorkel opening effectively makes the intake a 2" diameter one. I wish I knew why Ford designed it that way, because the only reason I can come up with is to "limit" the maximum power - possibly to improve long-term reliability?

- Jack

 

noise? or to pick up velocity of the air going over the maf