Aftermarket Intake Manifold?

[NIsaacs]

Do these things work? My oldest son swears by them. I have always kind of derided him but I keep hearing good things about them. Looking at them for my '01.

https://www.dieselautopower.com/diesel-power-source-arctic-air-intake-manifold-int-man-24v

 

[DavidC]

Ha, Avast blocked the site saying it was infected with jdcard steeler virus.

 

[GrantP]

In my opinion those things are a solution looking for a problem.

 

[Cummins12V98]

Think about it, that air is pressurized.

 

[TFucili]

First, I personally don't see the need, but that is just preference. But, secondly, as much as I am not a Banks fan, I think I would gamble on his, if I was inclined to try one.

 

[NIsaacs]

Think about it, that air is pressurized.

Yes, but "if" the oem is a restriction/bottleneck.....?? We know what that does to the exhaust system. I know marketing is a biggie, but why are so many being built by most manufacturers?

 

[BarryG]

I seem to remember reading a post on here or an article in the TDR years ago about a before and after dyno comparision on a 2nd gen 24v and think the results/gains were negligible or nonexistant. Now it might be a higher hp truck may see more of a difference or the pre 98's see more difference (I also seem to recall that the 12 valve trucks did see at least some improvement). As previously mentioned by a pp with the pressurization from the turbo you can overcome many flow losses that may be an impediment in the air pathway to the cylinders.

I think one of the reasons you see so many out there is it is low hanging fruit for the sellers/manufacturers. A carry over from the hot rodding days of years past and even today in the tuner world. A good intake manifold can make a definite difference in a gas vehicle especially from vehicles 30+ years ago. That used to be one of the go to items if you were turning it up on a gas vehicle. Single plane, dual plane, tunnel ram, velocity stacks, throttle body spacers pick your poison and spend your money you would see a difference. However with diesel, turbos and air pressurization your essentially forcing your way through the plenum imperfections, air flow be damned,. I could see it making a difference with drag truck or sled puller or even higher hp trucks say over 500hp (just guessing on that number nothing to back it up at all) but on your run of the mill not so much.

 

[AnonEd]

I wonder how much of the "gained" airflow you give back sticking something in each of the 7 ports?

 

[Cummins12V98]

On my 12V I had the Banks split twin intake, looked cool. Did it help? I doubt it!!!

 

[Regcabguy]

I got a super deal on an AFE elbow but wouldn't do it again. Sometimes you want things to work since you spent some coin.

 

[Ozymandias]

We see that so often here on TDR that people carry over the thinking from the naturally aspirated Gasser to the Turbodiesel.
Same with Airfilters, Exhaust and so on..
All crap on a stock Engine, gains nothing at all, even harms the Engine.

Always and ever - as long as we reach max. Boost, as long we have all the available power.
No more, no less. Thats how a Turbodiesel works.

Sure we could talk about spool up time and other minor things - but do they really affect the general user? I think no.

 

[KATOOM]

This question has been asked for years... Some people claim their butt dyno measured a difference, whereas most say nothing gained. A charged engine sees better results on the exhaust side since the air is being shoved in verses the air needing to escape with the least amount of resistance.
That said, I have heard that the twin intakes can help with EGT reduction by allowing more air to the back two cylinders which can be starved for air as the front four grab the supply. But dont quote me on any of that...

 

[NIsaacs]

We see that so often here on TDR that people carry over the thinking from the naturally aspirated Gasser to the Turbodiesel.
Same with Airfilters, Exhaust and so on..
All crap on a stock Engine, gains nothing at all, even harms the Engine.

Always and ever - as long as we reach max. Boost, as long we have all the available power.
No more, no less. Thats how a Turbodiesel works.

Sure we could talk about spool up time and other minor things - but do they really affect the general user? I think no.

My engine is not stock nor am I a general user, minor is good.

My butt dyno didn't feel anything when I went from oem 3" exhaust to 4", but I sure as heck am not going to reinstall the 3".

I am not trying to pop a wheelie here, just looking for any improvement at all. I don't need to see or feel it as long as it helps.

It would have been cheaper and more simple for Dodge to stay with the 1st gen 2.5" turbo piping but they went to 3"...

I keep looking at this from the link I posted. I understand it is mostly marketing but if there is some truth to it?

"On a stock engine expect to see anywhere from 15 to 25 more horsepower. Modified engines will benefit further. This will make for better power, fuel mileage, spool-up and cooler EGT"

 

[Bob4x4]

The 12v head is a bigger restriction than the intake,hence no power improvement.The vp truck very slight improvement on the dyno.The Common rails do pick up some torque at preboost and low boost condition with the gain narrowing as the boost reaches higher levels

 

[NIsaacs]

Thanks Bob,

That might be one reason my son likes them, his are all 4th gens. He uses this one with the large intercooler pipe, the one JR was talking about. Kinda spendy for me.