Anything as far as aftermarket air horns?
 

Is there an aftermarket airhorn that would be better than stock? Or does the stock do everythign just fine?

Just curious

Matt

aftermarket ones are better but not worth the money

How much better? What do they go for generally?

I spent ~$300 to put onboard air + a set of Kong train horns on the 1st Gen:

http://stuff.is-a-geek.net/PhotoAlbu...cs/CTD_164.jpg
http://stuff.is-a-geek.net/PhotoAlbu...cs/CTD_165.jpg
http://stuff.is-a-geek.net/PhotoAlbu...cs/CDT_166.jpg
http://stuff.is-a-geek.net/PhotoAlbu...cs/CDT_169.jpg
http://stuff.is-a-geek.net/PhotoAlbu...cs/CDT_170.jpg

Worth it? Who knows. They are scary wicked loud, way cool, and I'm all set for that ARB locker up front now, if I ever get around to that.

I think he is talking about air intake horns if I am not mistaken

From what I have heard the only ones that they make much difference on is the 3rd gens and dont do much at all for the 2nd's

Yes the air intake horns, sorry guys. But what do they do for the 2nd gens as far as power/boost/economy?

from what I have been told on the subject they dont do much for them at all but look pretty. Everyone that I have asked about them have said spend the money on other/better mods that will actually gain you something. I dont have any first hand experience with them but that is what I have been told when I have asked the same question. Hope this helps you out man.

:argh: :argh: :argh: :argh:

Ok thanks for the input guys. Guess the stock cummins air horn will suffice!

Save your money for other mods, I have a twin ram on my truck and felt very little difference by my seat o pants meter.

But when I had my pyro hooked up it lowered my egt's by 50 and I also lost 4 psi of boost due to increased volume

Hmmm.. 50* and -4psi? Screw that lol. Thanks for the input man

no prob, that was with my stock wh1c turbo boost went from 36 to 32 with no leaks. not saying the boost drop was a bad thing tho

that boost drop would be good then..... i didnt lose boost with mine and i noticed a 50-75 drop.... i have the twin ram too....

It was and is a good thing, I do like my twin ram but that would be on of the last upgrades to do IMO

Would you guys care to elaborate why the boost drop was a good thing?

boost is a restriction, and the more air you can flow the more hp you can make. Just like adding an aftermarket cam or a ported head the air flow has increased causing the boost to fall. also the wh1c is off the compressor map at 36 psi but is back on at 32psi.

Oh I see. Damn you guys are smart around here. I need to get some diesel bombers paraphenalia hehe

Boost is resistance to flow. The engine will cycle the same volume of air/fuel through the cylinders and out the turbine at any given rpm, all other things being equal (cam, valves, timing, etc.) Higher boost levels will contain more O2, per cycle of the piston, hence more power.

Intake mods like bigger horns, intercoolers and associated tubing present the same compressor (turbo) with a larger volume to fill/pressurize. So when the system gets going, the engine moves the same amount of air, but at a lower pressure because now the turbo has to work harder to build pressure (boost), so less power.

So more can equal more and less at the same time! :s:

Holy Alice-In-Wonderland analogy batman! lol. So what u are saying is, by increasing flow, boost decreases due to flowing more air more efficiently. So what if after u upgrade the system and flow more air, you turn up boost with an elbow or whatever else? Then u have more flow AND more boost. Win-win?

Basically, yes - as long as it's cool boost. That's what Dave was talking about with the MAP numbers.

But there's a catch-22. The best way to "turn up the boost" as you put it is to add fuel. And without cool boost that means high EGT.

You really have to think about the thing as whole system if you want go any further than token mods.

And higher egts cause more heat and engine catostrophy. Gotcha. Thanks for the clarification

Not necessarily, it's just a balancing act you have to perform to get the most air/fuel through the head in the most efficient way possible to achieve the highest power - if you want to do it safely.

Lots of guys program commonrails to run way into the EGT red zone for a few seconds at a time down the quarter mile with tons more fuel than their turbos can safely handle sustained and get away with it. It's just a matter of what you want to do with the truck.

its all a science...... mine runs 38psi on the HX35 right now..... its getting a 68mm and im going to try to keep it around 40 unless i need more...... gauges are your friend in tuning these things....... i have tuned mine 30+ times.....

yea seems like every couple weeks im tuning mine diff 2

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does anybody know the dimensions of the part of the air horn that bolts to the intake? im thinking about making one

the boost drop was good because that boost is already to high for the stock turbo. your just overspooling it and are gunna ruin it

hahaha wrong kinda air-horn, Chief.

Yeah, hes a spammer. 4 posts all directing people to Stylintrucks.com

Ahh good call man!

Anything as far as aftermarket air horns?
 

So with all of the air flow room it's like the turbo is the air commpersor and the air to air and the air horn are the air tank (hypothetically) More air room for the turbo to spool up and fill/ pressurize. Now does that mean less stress and quicker spooling of the turbo?


Brandon

Generally the more volume you have to fill, the greater the delay in turbo (aka turbo lag).