Air Intake = Computer Reprogramming?

[300CmeFLY]

I'm will be putting on a Volant air intake soon, and I was always under the impression that the computer would automatically re-adjust for the increased airflow through the intake. Then I happened to read a section in this artilce, and it states that it would have to be reprogrammed. Here's the link, and quote:
http://www.popularhotrodding.com/tech/0403phr_hemi/
"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."

Is this the case?

[vvv90]

Originally Posted by 300CmeFLY

I'm will be putting on a Volant air intake soon, and I was always under the impression that the computer would automatically re-adjust for the increased airflow through the intake. Then I happened to read a section in this artilce, and it states that it would have to be reprogrammed. Here's the link, and quote:
http://www.popularhotrodding.com/tech/0403phr_hemi/
"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."

Is this the case?

Unfotunetly yes, this is true.

Aftermarket intakes are a waste of money if you ask me.....At least right now they are.

[5point7]

Waste of money is one's opinion...and I'm glad you at least have one (or several as I've read lol).

I installed the Volant 2 weeks ago - LOVE IT on my C. Does it give me 10hp? Not sure, don't care. Do I need a dyno sheet to prove it works? Nope. Again, for 10hp, I don't care. Does the computer recognize it and adjust - nope..does it matter?

What I do know is this:
Increased throttle response (per my SOTP meter or my butt dyno), better mileage (when I can keep my foot out of it), and it now sounds AWESOME (I also have the Borla exhaust).

The SRT8 airbox claims a 8hp gain over a stock C airbox? (at least that's what someone already posted)...Volant on the SRT-8? Thoughts???

Waste of money is subjective - my personal opinion?

Worth every penny.

[Northern Rider]

The argument over mass air sensing and speed density sensing is only of interest to those doing major air input changes.

Minor improvements, such as better breathing filters such as K&N, or CAI systems, such as Volant or Airaid, definitely improve performance and fuel economy. The parameters that adjust timing and mixture will take advantage of denser air volume, paticularily over 2500 rpm in the case of the 5.7 litre Hemi.

The stock filter and the stock intake with its massive silencers is inherently restrictive. DCX wanted the car to be as quiet as possible.

[JustForFun]

*retracted*

JFF

[vvv90]

Originally Posted by 5point7

Waste of money is one's opinion...and I'm glad you at least have one (or several as I've read lol).

I installed the Volant 2 weeks ago - LOVE IT on my C. Does it give me 10hp? Not sure, don't care. Do I need a dyno sheet to prove it works? Nope. Again, for 10hp, I don't care. Does the computer recognize it and adjust - nope..does it matter?

What I do know is this:
Increased throttle response (per my SOTP meter or my butt dyno), better mileage (when I can keep my foot out of it), and it now sounds AWESOME (I also have the Borla exhaust).

The SRT8 airbox claims a 8hp gain over a stock C airbox? (at least that's what someone already posted)...Volant on the SRT-8? Thoughts???

Waste of money is subjective - my personal opinion?

Worth every penny.

I'm not saying don't buy it. It looks cool and all. It won't hurt.

FWIW, I just saw a dyno of an SRT-8 and he said he's running very rich stock. If the 5.7's run rich like this at WOT it might actually make a difference now that I think about it.

[vvv90]

Originally Posted by JustForFun

*retracted*

JFF

Uh oh....whaaaat did you saaaay???

[Northern Rider]

Originally Posted by vvv90

I'm not saying don't buy it. It looks cool and all. It won't hurt.

FWIW, I just saw a dyno of an SRT-8 and he said he's running very rich stock. If the 5.7's run rich like this at WOT it might actually make a difference now that I think about it.

Yeah, we found the 5.7 Hemi C ran rich as well. Pretty standard for manufacturers to program a rich setting these days. By improving cold air flow, performance increases.

[vvv90]

Originally Posted by Northern Rider

Yeah, we found the 5.7 Hemi C ran rich as well. Pretty standard for manufacturers to program a rich setting these days. By improving cold air flow, performance increases.

If that is the case I bet there WILL be gains....Maybe not enough for the SOTP meter but some.

I'd like to see a before and after dyno. (Not one put out by the manufacturer either) That should put the issue rest.

[jjs]

Originally Posted by vvv90

If that is the case I bet there WILL be gains....Maybe not enough for the SOTP meter but some.

I'd like to see a before and after dyno. (Not one put out by the manufacturer either) That should put the issue rest.

Ironically enough, we agree on this...as I tried to point out in the EBAY thread...