Like i said, i'm not saying it wont work but if it were as simple as a new chip, then why does all the pro builders limit the mods to SD system, you could then change everything and just stick in a new chip right? there would be no need for mas air conversion. to me $300 is a big gamble just to see if it works or even helps? who knows, just my thoughts on it, i belive if it were that simple there would be people every where modifying there SD engines cuz a chip would be far cheaper than a conversion, so there must be a reason for it. if you know please enlighten me. DW
See if you can get a response from Ken in the computer tuning/chips forum. He can tell you more about the chip than I even know about what they do. There are people running high performance engines on both speed density computers and mass air computers. It really doesn't matter, if the computer is tuned for the application (with a chip). Most high performance mass air systems are tuned for the specific mods on that vehicle.
I will give you the basic understanding that I have developed, again its a work in progress but seems to be on track.
The mass-air measure the incoming air, a lower lobe seperation affects vacuum, the mass-air doesn't measure vacuum, only incoming air and temperature. So it can idle better with a little more radical cam. Off idle and in the upper rpms the mass-air still measure the incoming air, but still can only understand a certain range of measurements, so if you get to a certain point with modification, even the mass-air will not be able to compensate for the changes in air-flow, temp, etc, and requires a chip or reprogramming of the computer.
Speed density measure vacuum, and bases the fuel introduction upon that reading. So obviously you change the cam to something with less lobe seperation, which creates less vacuum or more importantly throws the vacuum reading off, from the point it usually is, it adds more or less fuel at the wrong time. By changing the chip, the fuel map is adjusted, so the vacuum reading correlates with the correct amount of fuel needed to be delivered into the engine at X amount of rpm or load (which affects vacuum).
In short, the mass-air is flexible and understands a broader range of readings, the speed density operates withing a strict range, and must be told what is acceptable. I probably didn't make any sense, I know how it works in my head but wording things, much less, complex things, hasn't been a strentgh of mine. Where you been hiding at, its been a while since I seen you post on here? later
Hey if it works let know,
As far as where i've been, im still here, im just usually on the Big bronco forums, but last few moths the Docs. been trying to get my blood sugar regulated i havent been feeling that well, but starting to feel better again now. Thanks for asking, i didnt know anyone missed me. DW
The only problem I can see getting a chip is that I will have to run "super" unleaded. I'm here in Alaska and that stuff is not cheap. Regular unleaded is about $1.69 per gal.
Is there a chip out there that will alow me to still use regular unleaded? Or, would it be better to just change out the cam? Would my over all performance improve with the RIGHT cam?
I apologize for all the questions but, I do not want to make a repeat and not be educated on what I should be getting. Like I did with the cam.
Thank you all very much for all your imput. I am on the Fullsize Bronco web site alot and found this one. This site has some great information. I will pass it along.
Actually..... call jet chips......I believe it is........I saw an advertisement by them, saying that running high octane was a thing of the past. IN any case, you goal would be a custom chip, you would have to tell them all the specs of the cam, motor, and anything else. With it being custom, they can control the timing, so whether or not you need higher ocatane fuel can be determined by, you and the person you speak with. Good luck
Greetings all,
I just registered here and like the site and i need some help.
My 99 explorer is having idling probs, and i've been looking for a idle speed motor, be advised that i am stationed overseas so the ford dealerships are far and few.
this is me and that is you... lol I unno... Check this out, I bought a B303 cam off buddy and its good cam, but I got the speed density HO. Now will it run and if it does will it sound like **** or will it just idle ****ty and when you get on the throttle it smartens up or what? is it worth putting in? I just wanna know first hand how it will run... Is it only the idle afffected? I hav no idea what the lobe seperation is and the duration is advertised 288 at .480 lift and the stock is 266 with .444 lift... Help me out.
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2002 Ford Taurus SES DOHC Duratec 3.0L V6 (200hp)
1996 Ford F-150 XL 5.0, 302, M5R1 5sp, 4x4, 31's, leveling kit on front end.
1988 Ford Mustang LX 5.0 Hatchback, ported E7's, electric fan, 3.55's, smog pump delete. 14.9QM@98mph (Black)
So how will it idle, is the next question. I mean will it jump around or will it sound bad, like what will it do exactly. Like a vacuum leak usually idles low right, will it be constant at a low rpm or will it bounce around?
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2002 Ford Taurus SES DOHC Duratec 3.0L V6 (200hp)
1996 Ford F-150 XL 5.0, 302, M5R1 5sp, 4x4, 31's, leveling kit on front end.
1988 Ford Mustang LX 5.0 Hatchback, ported E7's, electric fan, 3.55's, smog pump delete. 14.9QM@98mph (Black)
