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Old 01-26-2008, 01:56 PM   #1
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A great read and an intake question for all of you

Everyone check out this great article, it had tons of info on the hemi that I never knew:

http://www.popularhotrodding.com/tec...iew/index.html

Ok, I have been considaring getting a functional hood scoop with a CAI, that is until my buddy showed me this article. On page 5 it says:

"Unlike an LS6, which has a mass air system that allows the computer to adjust the fuel flow for any given airflow so that the mixture is always right (theoretically at least), the Hemi has a speed density system. This means that any increase in airflow into the engine goes unseen by the rest of the system. If a modification is done that increases mass airflow, such as a cold-air package, the computer has to be reprogrammed accordingly. Fortunately, two companies, Squier Inc and Street & Performance are working on this now and already have what is needed for transplants of the Hemi into other vehicles."

So, did everyone get their computer reprogrammed that got a CAI? I highly doubt but yet I've read a lot of testimony on this site from people that claim better performance with a CAI. So, who's right and whats going on? Your help with this question is greatly appreciated

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Old 01-26-2008, 02:27 PM   #2
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A great read and an intake question for all of you

Yeah, still trying to figure out why Chrysler insists on using the speed density system instead of mass air. They say it's for emissions, but i don't see how a more precise tuning system would make things worse.
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Old 01-26-2008, 03:04 PM   #3
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A great read and an intake question for all of you

So would you agree that CAI's alone do nothing?
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Old 01-26-2008, 05:46 PM   #4
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A great read and an intake question for all of you

At the very least a low mount CAI will draw in cooler air. That alone is good. Of course you get better flow capacity with a CAI, but it has to go somewhere. The factory exhaust is really not too bad as far as stock goes, but a better exhaust will make the CAI work better. My intake setup uses an AirAid MIT tube from the stock air filter box. In the box is an Amsoil EAA drop-in nanofilter. Feeding the box is a modified factory air horn with a 4 inch ram tube from the fog light hole running straight into it. I have a Flowmaster 50 HD 3 inch single in/single out with no resonator. Besides that and my home made IAT power wire all I have is the Flashpaq. My truck ran 14.71 seconds @ 92.17 mph at 1200 feet altitude (and no power wire yet). Not bad considering my 3.92 peg leg and factory 20 inch wheels.

The MIT was my very first mod. I really don't know about any gains with only that done. To me it was the starting point.
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Old 01-26-2008, 10:10 PM   #5
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A great read and an intake question for all of you



good find. good read.
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Old 01-26-2008, 11:24 PM   #6
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A great read and an intake question for all of you

Quote:
quote:Originally posted by StanCab05:
So would you agree that CAI's alone do nothing?
No. They work, just not as well as they would on a MAF system.
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