intake question

[Doom's Day Custom]

i havea96 ranger with a 4.0l v6 and i put an intake kit on it and now when i stomp on the gas it back fires what wrong and it did not do this when the stock intake was on ????

 

[Bob Ayers]

There is no advantage to that intake kit, only disadvantages. The OEM intake is a true CAI, and will flow way more air than the engine can pull. What usually happens iwith the aftermarket intake kits is the air velocity is reduced going across the MAF sensor, causing it to read wrong.


Put the OEM intake back on.

 

[Doom's Day Custom]

But what would happen if i put a bigger exhaust on it to help the engine breath more??????

 

[Bob Ayers]

But what would happen if i put a bigger exhaust on it to help the engine breath more??????

Absolutely nothing! The air velocity by the MAF sensor will still be screwed up!

 

[Doom's Day Custom]

oh okay and is there anything to fix that problem and what do you think about this setup on ebay ???
http://cgi.ebay.com/ebaymotors/B4000-EXPLORER-RANGER-AIR-INTAKE-V6-4-0-OHV-1996-2000-I_W0QQcmdZViewItemQQhashZitem56352dd381QQitemZ370259383169QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

 

[Doom's Day Custom]

oh okay and is there anything to fix that problem and what do you think about this setup on ebay ???
http://cgi.ebay.com/ebaymotors/B4000-EXPLORER-RANGER-AIR-INTAKE-V6-4-0-OHV-1996-2000-I_W0QQcmdZViewItemQQhashZitem56352dd381QQitemZ370259383169QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

 

[Bob Ayers]

oh okay and is there anything to fix that problem and what do you think about this setup on ebay ???
http://cgi.ebay.com/ebaymotors/B4000-EXPLORER-RANGER-AIR-INTAKE-V6-4-0-OHV-1996-2000-I_W0QQcmdZViewItemQQhashZitem56352dd381QQitemZ370259383169QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

To fix the problem, you put the OEM intake back on, as previously posted.

You can mail me the money you would pay on that intake, and you will get the same performance increase, as if you bought it......from WWR (Wallet Weight Reduction)

 

[Nhaz]

But what would happen if i put a bigger exhaust on it to help the engine breath more??????

Did you somehow change how much air the pistons pull in? Unless you address That as in More CI the engine is Incapable of pulling more air in. Bigger exhaust/intake means beans unless you are acutally going to change how much air the actual engine pulls in.

example. you are pulling down 4 liters of air to be mixed with gas. so you have increased the size of the intake but the amount of air the engine pulls stll equals 4 liters.

exact same is true for the exhaust you still only output 4 liters.

Turbo's and superchargers address more air for the engine without changing the size of the engine. by compressing the air. Cold air intake aftermarket kits are cute. but they are mostly designed to separate you from your money.

 

[Natedog]

Did you somehow change how much air the pistons pull in? Unless you address That as in More CI the engine is Incapable of pulling more air in. Bigger exhaust/intake means beans unless you are acutally going to change how much air the actual engine pulls in.

example. you are pulling down 4 liters of air to be mixed with gas. so you have increased the size of the intake but the amount of air the engine pulls stll equals 4 liters.

exact same is true for the exhaust you still only output 4 liters.

Turbo's and superchargers address more air for the engine without changing the size of the engine. by compressing the air. Cold air intake aftermarket kits are cute. but they are mostly designed to separate you from your money.

Good answer, also the engine efficiency and (tune) balance or whatever you want to call it is upset and the resulting loss of vacuum in the intake causes problems....ie. backfiring, loss of off-idle power, etc.

 

[Hahnsb2]

example. you are pulling down 4 liters of air to be mixed with gas. so you have increased the size of the intake but the amount of air the engine pulls stll equals 4 liters.

exact same is true for the exhaust you still only output 4 liters.

Not exactly, there is such a thing as volumetric efficiency, how much air is being drawn in VS actual displacement. Most N/A engines are around 75-85% VE. The original 3.0 SHO Taurus had a special intake manifold that I've been told was capable of 114% VE.

That being said a "CAI" isn't really doing anything for your truck.

 

[Doom's Day Custom]

okay thank you very much guys +1 on rep power

 

[feellnfroggy]

Dude, leave your intake alone. Whether or not it does anything has nothing to do with your original post. The backfiring could be any number of reasons enhanced by the intake or not. What it does do is change the sound of your intake, as the ford air silencer is not being used now. You'll hear more of what goes on in your intake. Me persanally I am sure there is a mild gain, but not enough ti argue over. The same iwth exhausts. I have seen to many tests out there from enthusiasts on dynoes to say anything is possible. Some people are so closed minded that as soon as you say aftermarket intake the first word outta their mouth is "stupid" instead of hearing your actual problem. I have had cold air intakes on all my vehicles, I havent had backfiring problems till I messed with the exhaust. So I would start looking as possible reason for backfiring beyond the intake. Parhaps ther is a hose or sumthing that did not get hooked up, or might have fallen off. Double check before you draw any for sure conclusions.