Should I put my afe stage 2 BACK on? - Jeep Commander Forums: Jeep Commander Forum
Intakes Questions or advice about intakes? This is the place...

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post #1 of 16 (permalink) Old 02-20-2011, 06:16 PM Thread Starter
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Should I put my afe stage 2 BACK on?

I have the 2010 hemi and I installed the AFE stage 2 CAI this summer. I figured it would take a few months for the computer to adjust. It never did. I put the original back on and I didn't notice any decrease in power and the mileage improved by about 1/2 - 1 mpg whereas it dropped just a touch when I installed the afe.

I was under the impression that the engine would learn and adjust over time. Did I need to do a reset? I feel silly if I just put the OEM back on and it was as simple as removing the battery cables.

Thanks!!

IndyMTB
---------------------------------
2010 Jeep Commander Limited/QDII,RC 2" Lift 255/70/17 Goodyear Wrangler Adventure AT
JBA UCAs, Bilstein front, Sensa-Trac F-150 rear
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post #2 of 16 (permalink) Old 02-21-2011, 09:13 AM
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I have an AFE CAI as well for the 4.7L. When I installed mine I reset the computer by disconnecting the negative battery cable while I worked on it.

I think the directions even indicated to do this so the computer would relearn the new intake.


Also, for me at least, I saw a slight improvement in mpg and noticed better throttle response.

2006 Commander, 4.7L, QT2, Dark Khaki, - RR 2.25" lift in front, OME HD springs rear, 265/70 Goodyear Wrangler Duratrac (no spacers, original wheels), OME shocks in the rear, Bilstein HD front struts, 4xguard: front guard, belly guard, side guard 2, & rear sliders. Skid plate group with front two hooks, heavy duty tow package, AFE CAI (dry filter)
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post #3 of 16 (permalink) Old 02-21-2011, 11:01 AM
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Quote:
Originally Posted by Aggie07 View Post
I have an AFE CAI as well for the 4.7L. When I installed mine I reset the computer by disconnecting the negative battery cable while I worked on it.

I think the directions even indicated to do this so the computer would relearn the new intake.


Also, for me at least, I saw a slight improvement in mpg and noticed better throttle response.
x2. Better throttle response. Better sound. Same sucky milage!
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post #4 of 16 (permalink) Old 02-21-2011, 12:01 PM
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I hate to let you guys down, but adding a cai really doesnt help that much. You will see a little better throtle response and maybe a hair better gas mileage if you stay off the skinny pedal. Other then that, you wont see much more out of a cai. Yes they say you gain approx 7-15 horse power, but thats not 7-15 horse power at the wheels. There is a big difference.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #5 of 16 (permalink) Old 02-21-2011, 12:24 PM
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If the supposed HP gain doesn't go to the wheels, then it must go to the fuel pump!!!!!!!!!!!!!!
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post #6 of 16 (permalink) Old 02-21-2011, 12:44 PM
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Quote:
Originally Posted by 07JeepXK View Post
I hate to let you guys down, but adding a cai really doesnt help that much. You will see a little better throtle response and maybe a hair better gas mileage if you stay off the skinny pedal. Other then that, you wont see much more out of a cai. Yes they say you gain approx 7-15 horse power, but thats not 7-15 horse power at the wheels. There is a big difference.

No one claimed any miracle improvements by adding a CAI. I just stated what I have experienced, which was slightly better gas mileage and better throttle response.

To put my mileage in perspective: I got about 14 in the city and 17-18 on the highway with stock tires. After adding bigger tires I dropped to 11-12 city and 15-16 on the highway.

After I installed the CAI I get 12-13 city and 17-18 on the highway.

2006 Commander, 4.7L, QT2, Dark Khaki, - RR 2.25" lift in front, OME HD springs rear, 265/70 Goodyear Wrangler Duratrac (no spacers, original wheels), OME shocks in the rear, Bilstein HD front struts, 4xguard: front guard, belly guard, side guard 2, & rear sliders. Skid plate group with front two hooks, heavy duty tow package, AFE CAI (dry filter)
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post #7 of 16 (permalink) Old 02-21-2011, 12:47 PM
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Quote:
Originally Posted by dhh3 View Post
If the supposed HP gain doesn't go to the wheels, then it must go to the fuel pump!!!!!!!!!!!!!!
Actually there are two types of horsepower. Engine hp and wheel hp. When you see your 2006 Jeep Commander advertised as having 235hp and 305 ft lbs of torque they are speaking engine horsepower. Thats the power at the fly wheel. You lose power through the driveline and your end result is wheel horsepower which is much lower then engine hp. So that advertised 7-15 hp for your cold air intake is horsepower at the engine (fly wheel) and might only add 1-2 wheel hp which isnt going to be as noticable as you would think.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete

Last edited by 07JeepXK; 02-21-2011 at 12:51 PM.
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post #8 of 16 (permalink) Old 02-21-2011, 12:49 PM
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Quote:
Originally Posted by Aggie07 View Post
No one claimed any miracle improvements by adding a CAI. I just stated what I have experienced, which was slightly better gas mileage and better throttle response.

To put my mileage in perspective: I got about 14 in the city and 17-18 on the highway with stock tires. After adding bigger tires I dropped to 11-12 city and 15-16 on the highway.

After I installed the CAI I get 12-13 city and 17-18 on the highway.
I never said that you guys claimed that. Im just trying to let people know before spending a few hundred dollars on a cold air intake thinking they are going to get some crazy hp and fuel mileage out of there engine that there really not. Some people just dont understand how stuff like that works. Thats why im trying to help out. That is all. Not trying to be mean or anything.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #9 of 16 (permalink) Old 02-21-2011, 01:01 PM
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Quote:
Originally Posted by 07JeepXK View Post
I never said that you guys claimed that. Im just trying to let people know before spending a few hundred dollars on a cold air intake thinking they are going to get some crazy hp and fuel mileage out of there engine that there really not. Some people just dont understand how stuff like that works. Thats why im trying to help out. That is all. Not trying to be mean or anything.
No worries, and I didn't take it that way. Text is hard sometimes because there is no tone.

You are right though, if you are looking into a CAI don't expect crazy gains in horsepower and mpg's.

For me I liked the idea of having a re-usable filter and something that hopefully was not as susceptible to hydrolock as the stock intake. The slight, and I do mean slight, mpg gains were just a side-effect.

2006 Commander, 4.7L, QT2, Dark Khaki, - RR 2.25" lift in front, OME HD springs rear, 265/70 Goodyear Wrangler Duratrac (no spacers, original wheels), OME shocks in the rear, Bilstein HD front struts, 4xguard: front guard, belly guard, side guard 2, & rear sliders. Skid plate group with front two hooks, heavy duty tow package, AFE CAI (dry filter)
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post #10 of 16 (permalink) Old 02-21-2011, 04:32 PM
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You have to watch out with cold air intakes though. I have seen more guys hydro lock their engines running cold air intakes then guys running stock air boxes. Thats the main reason why I havent bought a cold air intake for the XK. I figure ill wait until I can afford to buy a snorkel and then go that route. I will admit though our stock air boxes are at a very bad place behind the front grill and there have been several guys hydro lock their XKs already. I believe some had cai's and some were stock.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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