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Unread 04-27-2013, 06:49 PM   #1
Campsen
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4 cylinder with cold air intake... any noticed improvement?

Would I notice any significant change in acceleration or mpg in my 4 cylinder with a cold air intake? Is it worth 180 dollars?

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Unread 04-27-2013, 06:57 PM   #2
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Mpg might improve a bit because your wallet is lighter.
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Unread 04-27-2013, 07:41 PM   #3
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You will notice you wallet is lighter and the engine will be a little louder.

Dwayne
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Unread 04-27-2013, 07:53 PM   #4
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The 4 cylinders air and exhaust have been tuned to allow as much airflow as possible already, same for the 4.0. No point.
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Unread 04-27-2013, 09:10 PM   #5
plym49
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Originally Posted by Campsen View Post
Would I notice any significant change in acceleration or mpg in my 4 cylinder with a cold air intake? Is it worth 180 dollars?
No and no.
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Unread 04-27-2013, 09:19 PM   #6
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I used to run one and really only notice more noise from it.........I went back to the stock setup!

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Unread 04-27-2013, 10:16 PM   #7
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Originally Posted by plym49 View Post
No and no.
This x2
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Unread 04-27-2013, 11:08 PM   #8
ThomasYJ
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Quote:
Originally Posted by Campsen View Post
Would I notice any significant change in acceleration or mpg in my 4 cylinder with a cold air intake? Is it worth 180 dollars?
No. If you want true cold air, do the 98 windstar intake modification and pull air from the cowl.

at the end of the day you'll still have the 2.5L, so you're kinda screwed either way lol.
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Unread 04-28-2013, 12:14 AM   #9
imstillatwork
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Originally Posted by Xpress View Post
The 4 cylinders air and exhaust have been tuned to allow as much airflow as possible already, same for the 4.0. No point.
I wouldn't go that far...it's by far the worst flowing engine I've owned. Nothing about it is tuned for flow, it's purely cheap manufacturing.
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Unread 04-28-2013, 08:05 AM   #10
Xpress
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I wouldn't go that far...it's by far the worst flowing engine I've owned. Nothing about it is tuned for flow, it's purely cheap manufacturing.
Then why, when one installs a higher flow intake, and a higher flowing exhaust, does the horsepower output not increase? That's because it's already as open and flowing as possible.
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Unread 04-28-2013, 08:37 AM   #11
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Forget the CAI.... just boost it. It's been done before plus with the smaller engine you'll have room for an intercooler.
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Unread 04-28-2013, 08:50 AM   #12
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Originally Posted by Xpress View Post
Then why, when one installs a higher flow intake, and a higher flowing exhaust, does the horsepower output not increase? That's because it's already as open and flowing as possible.
the intake and exhaust are designed to provide enough airflow to the engine as designed, they are not "already as open and flowing as possible"
if you modify the engine internals then modifications to the intake and exhaust help.
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Unread 04-28-2013, 11:20 AM   #13
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thanks for letting me know it's a waste of money. do you guys have any suggestions on cheap and easy mods to gain engine performance?
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Unread 04-28-2013, 11:39 AM   #14
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heres some interesting reading.
http://www.jpmagazine.com/techarticl..._power_adders/
IMHO any motor can be made to perform better if your willing to spend some money and do the work, but in the end a v8 swap will probably be cheaper and LOTS more fun.
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Unread 04-28-2013, 11:39 AM   #15
Luuca
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Originally Posted by Campsen View Post
thanks for letting me know it's a waste of money. do you guys have any suggestions on cheap and easy mods to gain engine performance?
You are pretty much at the top of your performance without a huge time and money investment.

Read this: http://www.jpmagazine.com/techarticl...r/viewall.html

or search 4.0 engine swap on the YJ forums.
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