Cold Air Intake

Website · Post by **Bumble Bee** » Mon Sep 20, 2010 4:56 pm

Looking to put a cold air intake on my 4 banger. I'm wanting to get better gas mileage, Hp, and better sound out of my Banks Monster exhaust. I came down to a couple intakes.

Rugged Ridge Polished Aluminum Air Intake Kit
For 97-02 JeepÂ® Wrangler TJ with 2.5L Engine
http://www.quadratec.com/products/17011_0003_07.htm

AIRAIDÂ® Cold Air Dam Intake
For 97-02 JeepÂ® Wrangler TJ with 2.5L I4 Engine
http://www.quadratec.com/products/17008_106_07.htm

AEM Brute Force Air Induction System
For 97-02 JeepÂ® Wrangler TJ with 2.5L 4 Cylinder Engine
http://www.quadratec.com/products/17012_X01_PG.htm

Any thoughts on the 3 or others that I should look at? Opinions if I should even put a Cold Air on a 4 cylinder?

Post by **BadAssEddie** » Mon Sep 20, 2010 5:08 pm

Its not really worth it man, the cost savings would be negligible at best and the time required to pay back your $200 or whatever intake would be longer than the useable life of the engine. Also on a new engine, an intake might net you 7 HP on a dyno. Intakes are just a building block for other more serious engine mods, save your money and pay for club dues, lol.

YouTube · Post by **TerryD** » Mon Sep 20, 2010 6:34 pm

Unless you are moving on the interstate, you actually LOSE horsepower with it. For ever ~7.5*F your intake air temperature increases, you loose 1% horsepower. A "cold air intake" as they are called, is a waste of money. Put your money into a good tune up and decent exhaust will do more. If you can't get air out, why try to put more in?

Website · Post by **Bumble Bee** » Mon Sep 20, 2010 7:08 pm

I have a Banks Monster muffler with a flowmaster cat, and a Banks Header that I put on, and I'm getting a new engine put in this week, I'm just looking for easy performance parts for my jeep.

Post by **BadAssEddie** » Mon Sep 20, 2010 7:10 pm

TerryD wrote:Unless you are moving on the interstate, you actually LOSE horsepower with it. For ever ~7.5*F your intake air temperature increases, you loose 1% horsepower. A "cold air intake" as they are called, is a waste of money. Put your money into a good tune up and decent exhaust will do more. If you can't get air out, why try to put more in?

What?

Any sort of air filter is an inhibitor on engine flow. You will gain more airflow with less inhibition. You are not putting more air into the engine as its is NA and the engine is what regulates air flow. You will have a freeier breathing engine and therefore more HP, albeit little (run any unfiltered engine on a dyno...) I agree with you on the fact that they are a waste of money but where does temperature come into this discussion? The ambient temperature of which the filters operate in will be consistent within a certain range of precision independent of whatever filter is on the engine.

YouTube · Post by **TerryD** » Mon Sep 20, 2010 7:19 pm

Hot air is thin air, cold air is dense. Also, very few aftermarket air filters perform better than stock. 1% HP gain in most, which is EASILY doable by putting a K&N or equivalent in the stock box. All those tests you read about the results of are done on a dyno with the hood up and a large fan blowing across the engine to get cool air to it. Total sham...

Post by **BadAssEddie** » Mon Sep 20, 2010 7:29 pm

Im not saying that the ads are not a sham Terry. Im saying that the engine operating conditions are consistent besides one variable, putting a freeier flowing air filter on the engine. Nowhere has temperature been introduced into the discussion, nor should it. I just believe your first post was misguided and wanted to give you my opinion and what i believed was incorrect.

YouTube · Post by **TerryD** » Mon Sep 20, 2010 7:43 pm

I see... sorry. I agree a freer flowing intake is good, but you have to look at the engine and what you're dealing with. Most have what they need unless cam or head changes are made. Replacing a perforated tube on a Jeep with a smooth one to the stock box is a good change, but still of little gain compared to cost, as you said.

Designing and engine/intake/exhaust combo based on what you want to do is the best. Too much or too little of any one component will create havoc and you'll probably end up with less power than you started with. Like that ya-who in Harlan with the chevy based buggy off of rail-bed.

Post by **BadAssEddie** » Mon Sep 20, 2010 7:47 pm

TerryD wrote:I see... sorry. I agree a freer flowing intake is good, but you have to look at the engine and what you're dealing with. Most have what they need unless cam or head changes are made. Replacing a perforated tube on a Jeep with a smooth one to the stock box is a good change, but still of little gain compared to cost, as you said.

Designing and engine/intake/exhaust combo based on what you want to do is the best. Too much or too little of any one component will create havoc and you'll probably end up with less power than you started with. Like that ya-who in Harlan with the chevy based buggy off of rail-bed.

Doesnt everyone have a 500 HP buggy?

YouTube · Post by **TerryD** » Mon Sep 20, 2010 8:05 pm

BadAssEddie wrote: Doesnt everyone have a 500 HP buggy?

LMAO.... sorry man, I forgot that fact....

Post by **jac6695** » Mon Sep 20, 2010 9:00 pm

Yeah I am with Terry on this one. If you want something like the CAI available for your Jeep, pick up a cheap washable K&N knockoff from Ebay, and fab up some tubing using material from Home Depot/Lowes. You can do it much cheaper, and say that you did it yourself, and will have the same net HP gain (somewhere around 000.5% lol).

Post by **lantozzi42** » Tue Sep 21, 2010 4:07 am

yall are getting way to technical for me. that being said greg i have had a few intakes if your gunna get one go k&n thats the only one i can vouge for being awsome. airiad blows cock