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Exhaust 5.7 HEMI Exhaust Discussion


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  #11  
Old 11-08-2013, 12:45 PM
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Quote:
Originally Posted by brandonjansen View Post
Yup, it is. If you want the same performance gains as an aftermarket CAI without spending huge money. Get a drop in filter (stay away from K&N), add a secondary intake tube to the bottom of your air box (search the forum for threads on how to do this) and replace the intake tube between the air box and throttle body to free up some flow. That will literally give you everything that an aftermarket intake provides except the for the appearance. So if you just want the small amount of performance gain then that's a great option. If you want the performance gain and a bit of a nicer look under the hood as well then take a look at the S&B or Vararam. You just have to justify if the look of either of those intakes are worth the extra cost for you.
Thanks for the info!
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  #12  
Old 11-09-2013, 02:40 AM
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Thanks for the info everyone!
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Old 11-09-2013, 12:34 PM
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Quote:
Originally Posted by brandonjansen View Post
Get a drop in filter (stay away from K&N)
Can you elaborate on this? What about the K&N causes you to stay away from it?

What would you use for a drop in filter?
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Old 11-10-2013, 04:47 AM
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Quote:
Originally Posted by Snappy View Post
Can you elaborate on this? What about the K&N causes you to stay away from it?

What would you use for a drop in filter?
The K&N filters are actually terrible filters. Read through some of the information in THIS article and see what you think. It is written for diesels but a lot of the filter performance numbers will apply to gas trucks as well.

There are some other brands listed in that article that you might want to take a looks at. I'm not sure who all makes drop in filters for the 4th gen Hemis. If S&B Filters does I would check them out. aFe would also be a great choice based on the results in that article.
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Old 11-04-2014, 08:10 PM
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Not to mention that your stock box breathes through the fender area of the truck, taking in outside air. These "cold" air intakes all have an open box taking in air heated under the hood(engine, radiator, exhaust, A/C, etc).

Some may offer a SLIGHTLY better or smoother air flow profile, but mfr's are well aware of what is possible. Many times it is as simple as money, but all to often they don't do things the aftermarket does because their design is more reliable, or gives another advantage(MPG, torque curve placement, avoiding federal emissions penalties, on and on). Remember that being able to pull more air and make more HP means burning more fuel. How often do you use the full ability of your engine, how much difference will that 4-8hp make(trick question, NONE)? The drop in mpg will make a difference in your wallet every single mile, and you paid out the nose for a kit to make that happen.

Don't think for a second Ram would skip being able to advertise 400+hp, and 28mpg hwy with a design like AFE's if there wasn't a good reason.

just my .02

Last edited by JavaPatriot; 11-04-2014 at 08:12 PM.
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Old 11-09-2014, 03:27 PM
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Honestly the mopar cai and catback are probably the worst "bang for your buck" performance mods you could spend your cash on. You would be much happier by adding a drop in filter, welding in a muffler of your choice, and using the money saved to get a tuner and custom tune. And still probably have more cash left.
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Old 06-09-2015, 02:49 PM
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I honestly think it is more eye candy under the hood than anything.
390 HP is Beast Mode enough
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Old 06-14-2015, 10:09 PM
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Modify the stock airbox and do a full header back exhaust, maybe with an h pipe! And yes, I believe you WILL feel a difference. If it is all stainless under there, all you would need is....
1. Headers
2. Muffler of your choice
3. H pipe, X pipe, or aftermarket y pipe. ( I would personally go with an H pipe
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