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  #13  
Old 02-27-2011, 09:00 PM
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My butt dyno is no less accurate than youe keyboard dyno.

Mwaahaaahahhhaaa.

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  #14  
Old 02-27-2011, 09:01 PM
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Re: CAI give actual performance or MPG improvements?

lolz... anytime Pal

FWIW, mine felt like a weapon after the initial CAI install, then slowly but surely, relearnt, and slowed down again
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  #15  
Old 02-27-2011, 09:01 PM
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Re: CAI give actual performance or MPG improvements?

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Originally Posted by Marlin View Post
Hi mate
I assume you mean 2011, not 2001?

It's my opinion (and we know about those! ), that unless any CAI or free exhaust system is coupled with some form of tune, (preferably a tune altered on a dyno for your particual vehicle), that the ECU simply re-learns very quickly and takes away any perceived benefit that you may get initially, effectively aquiring all the factory specs soon after.

We all know that yes, there are improvements to be made, BUT, the factory tune is there to allow for "85th percentile", ie, the majority of purchasers who may abuse, may run poor fuel, etc etc, rather than enthusiests who take more of an interest. Hence my thinking that a tuner is warranted to retain any improvements.

In essence, re intakes, it's my belief that the factory airflow airbox/intake headroom properties are more than enough to absorb any increase with a tuner.

Heck, many, many sports cars have what appear to be a fairly ordinary factory intake designs, yet substantial increases can be had with tunes and free flow exhausts before the intake really needs upgrading. It's more tinsel than anything, and yes, I have one on my Jeep lol

Opps 2011 Your right, CAI in for me has always been coupled with exhaust and a remap, so to just speak about it on its own is not exactly correct. I stand corrected
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  #16  
Old 02-27-2011, 09:04 PM
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Agree on the tune, which I hope is available for the newer rigs. Others have mentioned here that the new systems may be more hack proof to aftermarket. Hope not. If nothing else the damn ETC needs to have a workaround.
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  #17  
Old 03-02-2011, 12:49 PM
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Re: CAI give actual performance or MPG improvements?

Quote:
Originally Posted by Marlin View Post
Hi mate
I assume you mean 2011, not 2001?

It's my opinion (and we know about those! ), that unless any CAI or free exhaust system is coupled with some form of tune, (preferably a tune altered on a dyno for your particual vehicle), that the ECU simply re-learns very quickly and takes away any perceived benefit that you may get initially, effectively aquiring all the factory specs soon after.

We all know that yes, there are improvements to be made, BUT, the factory tune is there to allow for "85th percentile", ie, the majority of purchasers who may abuse, may run poor fuel, etc etc, rather than enthusiests who take more of an interest. Hence my thinking that a tuner is warranted to retain any improvements.

In essence, re intakes, it's my belief that the factory airflow airbox/intake headroom properties are more than enough to absorb any increase with a tuner.

Heck, many, many sports cars have what appear to be a fairly ordinary factory intake designs, yet substantial increases can be had with tunes and free flow exhausts before the intake really needs upgrading. It's more tinsel than anything, and yes, I have one on my Jeep lol
Warranty issues aside

This is correct, the tune makes the gains permanent. It's all related to setting the PE, WOT air/fuel ratio coupled with timing tables coupled with the max fuel octane you are tuning for. On a NA motor such as 5.7 HEMI, tuning the air fuel ratio to 12.8 or so would be perfect.
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  #18  
Old 03-02-2011, 06:22 PM
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Re: CAI give actual performance or MPG improvements?

^^^^ exactly, and after running my WK with an air/fuel ratio meter, they have it set at under 10:1 at WOT! Good for putting up with abuse, not for power though!
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Old 03-02-2011, 07:42 PM
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Re: CAI give actual performance or MPG improvements?

I just put on the Bwoody intake on my 5.7L. I have seen an increase in mpg (12.5 to 13.5). It would be better if I could keep my foot on the pedal. It doesn't take a math whiz to see 13.5 is more than 12.5. I have not done any other improvements. Factory tuned, factory exhaust.

Factory air intakes are very restrictive. Opening up the intake with more airflow has to change something. So I am not buying the statements being made that there is zero performance or zero mpg gains. The engine is working a lot less to get air.
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  #20  
Old 03-02-2011, 08:13 PM
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Re: CAI give actual performance or MPG improvements?

Quote:
Originally Posted by Proshop01 View Post
I just put on the Bwoody intake on my 5.7L. I have seen an increase in mpg (12.5 to 13.5). It would be better if I could keep my foot on the pedal. It doesn't take a math whiz to see 13.5 is more than 12.5. I have not done any other improvements. Factory tuned, factory exhaust.

Factory air intakes are very restrictive. Opening up the intake with more airflow has to change something. So I am not buying the statements being made that there is zero performance or zero mpg gains. The engine is working a lot less to get air.
I just installed the bwoody 4" intake I haven't checked my mileage yet.........and I have the same problem I can't keep my FOOT out of her...
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  #21  
Old 03-02-2011, 08:22 PM
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Re: CAI give actual performance or MPG improvements?

Quote:
Originally Posted by Proshop01 View Post
I just put on the Bwoody intake on my 5.7L. I have seen an increase in mpg (12.5 to 13.5). It would be better if I could keep my foot on the pedal. It doesn't take a math whiz to see 13.5 is more than 12.5. I have not done any other improvements. Factory tuned, factory exhaust.

Factory air intakes are very restrictive. Opening up the intake with more airflow has to change something. So I am not buying the statements being made that there is zero performance or zero mpg gains. The engine is working a lot less to get air.
ha, so it'd be nothing to do with the engine and driveline running in.... or that the ECU hasn't had time to reset to factory parameters.

Tell us what you think in a coupla years

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Old 03-02-2011, 08:52 PM
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Re: CAI give actual performance or MPG improvements?

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Originally Posted by Marlin View Post
ha, so it'd be nothing to do with the engine and driveline running in.... or that the ECU hasn't had time to reset to factory parameters.

Tell us what you think in a coupla years

I want to make sure we are on the same page...you are saying my ECU will change itself to counteract the extra flow of air? Under those circumstances, what would be the point of a performance exhaust, if the ECU will change the parameters back to 'factory' settings?

I assume Bwoody has evidence to prove its claims of increased horsepower and mpg. But you are telling me they are wrong.
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  #23  
Old 03-02-2011, 09:09 PM
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Re: CAI give actual performance or MPG improvements?

Everyone has an opinion, we all know that

It's my opinion that the factory ECU rather quickly "re-learns" and effectively negates the benefits of yes, intakes AND exhausts. We need to remember these ECU's are very sophisticated, and have measures within them such a torque limiting, stuff that's quite hard to get around, even with a tuner!

My experience is this; installed CAI, instant, very noticable improvements, but after several hundred miles, everything felt "normal" again, back to stock feel.
I had a similar experince when I installed my very free-flowing exhaust.

Of course, once a good tuner is available you can make the improvements more permanent, as proven by several members on here running much faster acceleration times than stock. But until there's a tuner........

There is my opinion..... make of it what you will
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  #24  
Old 03-02-2011, 11:32 PM
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Re: CAI give actual performance or MPG improvements?

What Marlin is saying is really true. I have an 05' Magnum and had the same problems, until I got a programmer. The computers in these vehicles are adaptive and will not only learn the parts you instal but also the way you drive.
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