Do I really need a CAI? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 10 Old 06-25-2012, 12:29 AM Thread Starter
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Do I really need a CAI?

I was considering on buying a CAI for my 2008. After speaking with a buddy who was had his 2005 for quite some time, he told me I really don't need a CAI. He said the stock filter is good up to 800hp and filters well. He also said that the CAI is less filtering which has the potential for more dirt to enter the engine. My truck is stock right now as far as mods to the engine go, but if my dealer is mod friendly I plan on adding a dpf delete, removing the cats, and adding an exhaust from there. Not looking to get into the down pipe or anything like that, and I will obviously be adding a tuner. Is the CAI necessary or should I save the $$?

2008 F250 Harley Davidson 4x4, Upgraded LED lighting, JL Audio 13.5" Stealthbox, JL Audio C3 door speakers, JL Audio 500.1 for the stealthbox, JL Audio 400.4 for the doors, Viper 5704 alarm/SmartStart and GPS tracker, JimmiJammer door plates, JimmiJammer gateguard, Delete front lock/rear handle swap, DPF delete, MiniMaxx, 2.5" level, Sinister coolant filter, 55w 6000k HID's driving/fog lights, S+B CAI, MBRP 5" DP back exhaust, 35x12.5x20 TIS 20" rims, Nitto Trail Grapplers, adjustable track bar.
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post #2 of 10 Old 06-25-2012, 03:16 AM
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You answered your own question. Stock will flow and filter well
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post #3 of 10 Old 06-25-2012, 03:33 AM
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for my understanding a stock one is only good to 500hp and if you have a spartan or h&s tuner you will go over that

I'm addicted to diesel and I step on it constantly!

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post #4 of 10 Old 06-25-2012, 07:13 AM
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Quote:
Originally Posted by TheFordman87 View Post
for my understanding a stock one is only good to 500hp and if you have a spartan or h&s tuner you will go over that
I agree with this. On the higher horsepower tunes you will suck in the filter minder meaning the truck isnt getting enough airflow.

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post #5 of 10 Old 06-25-2012, 09:57 AM
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Just get one when you do a tune and DPF delete. No need before that.

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #6 of 10 Old 06-25-2012, 09:59 AM
Don't you worry about it


 
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Quote:
Originally Posted by 08stroker250 View Post
Just get one when you do a tune and DPF delete. No need before that.
exactly..........


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post #7 of 10 Old 06-25-2012, 06:53 PM
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if you are tuned on anything higher than the 250 tune you are going to need it. I tuned to 300 when I first got my tuner and every time I got onto the freeway my "check air filter" light turned on.

Every time...
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post #8 of 10 Old 06-25-2012, 08:19 PM
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I just put on a afe stage II spartan tuner and the afe cat\dpf delete and man new truck more mpg run the 300 tune with sense haha.
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post #9 of 10 Old 06-26-2012, 12:25 AM
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i got one after a tuner and exhaust. getting another mile better per gallon. throttle response even better. no buying 75 dollar factory filters.

08 F250 KR
08 F250 XL
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post #10 of 10 Old 06-26-2012, 06:48 AM
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Quote:
Originally Posted by 08stroker250 View Post
Just get one when you do a tune and DPF delete. No need before that.
This.

It may help slightly in stock form, but becomes necessary when tuned.



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