cold air intake

[buddy208]

does a cold air intake really help cause all i see is they just open up the box and put a straight tube in.

[ComancheKid45]

Ive never seen a "cold" air intake on an MJ. Most people just eliminate the airbox and install a cone filter. Gains are very minimal if at all. Overall IMO keep the OEM setup, itll filter much better and isnt hindering your 4.0/2.5 much at all :thumbsup:

[Pete M]

unless you make sure that the air going in is fresh from outside, it's more of a "hot air" intake. :(

[dasbulliwagen]

Just about every factory original airbox is more of a cold air intake than anything you could put in there, as the airbox usually draws air in through the fender, or directly through the core support. I think though that the thing that the new ones do is smooth out the airflow coming in making for easier breathing.

[wyk]

From the dyno charts I have seen, the majority of aftermarket intakes increase a tiny bit of power up on top(like 5200-6000 rpm) and hurt low end torque; basically the exact opposite of what you want for a truck. Few of them scrub particles from the air as well as a stock filter, either. Some of them are far worse at cleaning the air than stock filters. If you have a high performance engine with a lot of mods, it may make a difference. If you like your truck to make a sucking sound, sure - go for it. For a stock motor, I can see other areas spending the money could be far more of a benefit, like new spark plugs, an oil change, new filters, and maybe some BG 42 cleaning solution for the top end. Personally, I would rather have 30-100 gallons of fuel than an aftermarket intake that might be worse for my application than stock.

[HOrnbrod]

From the dyno charts I have seen, the majority of aftermarket intakes increase a tiny bit of power up on top(like 5200-6000 rpm) and hurt low end torque; basically the exact opposite of what you want for a truck. Few of them scrub particles from the air as well as a stock filter, either. Some of them are far worse at cleaning the air than stock filters. If you have a high performance engine with a lot of mods, it may make a difference. If you like your truck to make a sucking sound, sure - go for it. For a stock motor, I can see other areas spending the money could be far more of a benefit, like new spark plugs, an oil change, new filters, and maybe some BG 42 cleaning solution for the top end. Personally, I would rather have 30-100 gallons of fuel than an aftermarket intake that might be worse for my application than stock.

 

That's exactly right. I tried a modified K&N (modified by using a bigger Amsoil filter for better filtration) and it did make a 3HP difference on the high RPM end on the Hesco dyno. The 62mm throttle body, cowl hood, and 2.5" dual exhaust system helped. A stroker needs balanced suck and blow to run best. But a K&N or similar "cold" air intake IMHO is worthless on a stock engine; your $$ are better spent elsewhere. The stock airbox is quite efficient.

[buddy208]

really all i see is it opens up to more air and smooths the air flow trough a smooth flat rounded tube

[October_V]

The guys above are right, I got a cheap-O intake off eBay. The only difference is the sucking intake sound when accelerating, and a new look under the hood.

I also don't have to buy new paper filters, just wash and re-oil.

 

Bottom line, if you want to do it, just do it.

[Pete M]

really all i see is it opens up to more air and smooths the air flow trough a smooth flat rounded tube

 

 

which doesn't really help our low rpm engines much if at all. :dunno:

[comanche12]

well if u want keep low end tq then keep the intake box that "storage" the air so you able to have a low end tq. cold airintake is def a positive performance expect the low end tq changed to mid range and depend on pipe that your gonna use.

 

correct me if I'm wrong but thats what i remember from performance class that i went last year. same idea with long runner and short runner on intake manifold will be alot different