Interesting post on intakes from the PUTC forum!

Ram4Pick · 2003-02-19 16:14:00

http://forums.pickuptruck.com/showflat.php?Cat=&Board=UBB12&Number=232325&page=0&view=collapsed&sb=5&o=&fpart=1 Interesting reading! Jim

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02-19-2003, 10:14 AM

Ram4Pick

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Interesting post on intakes from the PUTC forum!

http://forums.pickuptruck.com/showfl...b=5&o=&fpart=1
Interesting reading!
Jim

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02-19-2003, 11:44 AM

Ram4Pick

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Re: Interesting post on intakes from the PUTC forum!

Interesting, if he knows what he's talking about. Either way, it makes you think. It's not the first time I've heard the stock intake tube has that lower baffle on it for reasons other than sound suppression. I'm running the stock air box and using a paper filter, you know it's been modified with a ram-air set up. I'm using an after market intube though, I may put the stock one on just for **** and giggles. My truck did seem to loose low end when I had the K&N FIPK and the UPD using a K&N filter. The UPD actually seem to work better with a paper filter. Umm <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Jim

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02-19-2003, 01:01 PM

Patrick G

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Re: Interesting post on intakes from the PUTC forum!

The guy has a point about cool air, but blew it when it came to airflow. A UPD air intake utilizes the stock air box, which ensures the motor gets cool air from the fender (just like stock). That kills that arguement. The air sliencers DO restrict airflow on the stock air tube though. Switching to a UPD has been dyno proven to give you at least 10rwhp and around a tenth of a second gain in the 1/4 mile. Makes me believe the stock intake can be improved upon. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> Why don't you actually try some back to back testing or listen to those of us who have? The UPD works. If you keep your stock intake, you risk falling a tenth behind your opponent.

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02-19-2003, 05:02 PM

GREGGO

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Re: Interesting post on intakes from the PUTC forum!

Another thing he says about having more chambered air available on the OEM tube??? The UPD also has a much bigger lid than stock instead of the ******* on the OEM tube. So I would bet that cancels out. But where he says the OEM tube has the least turbulance, I just can't believe that. As far as the K&N getting hot air, I just don't believe all that crap either. Once the vehicle is moving, since the filter is located at the front of the truck, I bet the air is nowhere near double as he claims. <blockquote>quote:<hr /> Some claim the AIRAID makes 10HP... Maybe if you position the high volume cooling fan dyno shops use directly in front of the truck with the hood up, so it can keep ambient air flowing through the engine compartment ... LOL ... But ya ain't makin any power with the hood closed after drivin for a while... It's called heat soak...<hr /></blockquote>NOSHIT SHERLOCK that how air gets in there while the vehicle is moving. Yea, I'm looking for HP while idling. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

There are some good points, but detils were still left out and not everything GM does is for the better of the car.

Greg

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02-19-2003, 05:45 PM

sleek silverado

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Re: Interesting post on intakes from the PUTC forum!

Interesting!
<blockquote>quote:<hr /> 1500 Black SLT Quad Cab with hemi and 20" rims <hr /></blockquote>But he drives a Dodge. He can't be too smart! <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

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02-19-2003, 09:12 PM

Ram4Pick

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Re: Interesting post on intakes from the PUTC forum!

Well, I just tried a little experiment and it didn't go well. I put the stock intake tube back on and it felt good at first. It did seem to have more low end but it falls on it's face quickly. My 0-60 time was slower by about .15 seconds compared to the DJ motorsports intake tube I'm using, that's big. I put the DJ tube back on, experiment over!
Jim

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02-19-2003, 10:16 PM

Chevy

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Re: Interesting post on intakes from the PUTC forum!

Hell I'ran my truck with stock box and filter and it ran quicker down the track than with the dropin K&N on the same night. I then put in the K&N FIPK and it droped 2 tenths of my runs. <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" /> <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />

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02-19-2003, 11:59 PM

Ram4Pick

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Re: Interesting post on intakes from the PUTC forum!

<blockquote>quote:<hr />Hell I'ran my truck with stock box and filter and it ran quicker down the track than with the dropin K&N on the same night. <hr /></blockquote>I use a Purolator paper filter, my truck is quicker with it than with a K&N. I've tried both at the track, paper is better for me. It gets expensive replacing them, I replace the air filter every other oil change, every 6K I put a new air filter in.
Jim

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03-02-2003, 02:59 AM

11H

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Re: Interesting post on intakes from the PUTC forum!

Hey guys, I'm the one who wrote that information at the avalanche site... I'll help clarify some things:

Patrick G,,,

<blockquote>quote:<hr /> The guy has a point about cool air, but blew it when it came to airflow. A UPD air intake utilizes the stock air box, which ensures the motor gets cool air from the fender (just like stock). That kills that arguement. <hr /></blockquote>I never mentioned the UPD did I? ... And you need to define "airflow" in your statement... It genericly talks about air flowing, and bears no identification in that sentence... And yes, a UPD utilizes the stock airbox...

<blockquote>quote:<hr /> The air sliencers DO restrict airflow on the stock air tube though. <hr /></blockquote>How does it restrict? There's NO inner diameter or area where the airflow is restricted, the anti-resonators are all side-lined and away from the main flow tract... (On the 2002 avalanche, the hemholz resonator is also larger than what's on the 99-01 vortecs... )

<blockquote>quote:<hr />Switching to a UPD has been dyno proven to give you at least 10rwhp and around a tenth of a second gain in the 1/4 mile.<hr /></blockquote>On who's dyno? Not the one I see run...

<blockquote>quote:<hr />Why don't you actually try some back to back testing or listen to those of us who have? The UPD works <hr /></blockquote>I have, and there is nothing in mass produced cold air kits... The UPD might be the best of it's kind, though... But there's no way a cold air kit on a 5.3 truck makes 10 hp... sorry, I don't buy it... The only cool air kit that makes power on a 5.3 is the one ProDyno of AZ makes that re-locates a K&N cone filter to the passenger lower portion of the radiator cap... It makes solid 6HP gains, but loses a little power over the oem system to about 2,000 RPM, where it picks gain back up...

<blockquote>quote:<hr /> The UPD works. If you keep your stock intake, you risk falling a tenth behind your opponent.
<hr /></blockquote>Wow, a tenth? Would that be an estimated/calculated tenth, or a tenth you consistently see as a gain? I vary a tenth or two at the strip, from run to run; you mean to tell me your UPD gives a measureable tenth? Come on man, a tenth can't be measured to a corresponding mod whether it's a UPD or anything else ... If you can tell me you measure a tenth gain by the use of a UPD, I'll call you "truthful."

Fast 4.8

<blockquote>quote:<hr /> But where he says the OEM tube has the least turbulance, I just can't believe that. As far as the K&N getting hot air, I just don't believe all that crap either. <hr /></blockquote>The little turbulence the oem tube has obviously doesn't hurt power... The aftermarket straight walled tube creates resonance through poor harmonics; it's an engineering thing believe it... The K&N gets more hot air than the oem box... The sheet metal enclosure is not 100% closed off, and it suffers heat soak through IR transfer, because it's metal, and metal radiates heat more than polymer...

<blockquote>quote:<hr /> NOSHIT SHERLOCK that how air gets in there while the vehicle is moving. Yea, I'm looking for HP while idling. <hr /></blockquote>So you're saying that little 1" by 5" hole @ the lip of the hood where it meets the grille is gonna outflow the oem box inlets? ... Nope ... That's a 5 square inch opening ... A lot different than with the hood open bud... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

<blockquote>quote:<hr /> Another thing he says about having more chambered air available on the OEM tube??? The UPD also has a much bigger lid than stock instead of the ******* on the OEM tube. So I would bet that cancels out. <hr /></blockquote>True, but the motor has to build vaccum off tip-in to pull reserve air from that distance... The oem tube has air reserve near the TB to aid in tip-in, hence getting the puwer curve ball rolling sooner...

Y2K Silverado,,,

<blockquote>quote:<hr /> Well, I just tried a little experiment and it didn't go well. I put the stock intake tube back on and it felt good at first. It did seem to have more low end but it falls on it's face quickly. My 0-60 time was slower by about .15 seconds compared to the DJ motorsports intake tube I'm using, that's big. I put the DJ tube back on, experiment over!
<hr /></blockquote>Was that with a Gtech? ... So then human error could play a part right? ... Run it on the dyno after you give the PCM about 200 miles of learn time to change the long term fuel trims ... You can't just go from one to the other and expect the PCM to relearn that quickly...

sleek silverado,,,

<blockquote>quote:<hr /> But he drives a Dodge. He can't be too smart! <hr /></blockquote>I don't drive a Dodge ... I drive an avalanche Z71 ... The guy that copied this from the cafcna site drives a dodge... I guess "YOU'RE" not too smart... LOL

Anytime you want to tap an engineer's head on flow patterns, you just pop over to cafcna, and visit the perf forum... you'll also find the plans for a cold air kit that makes true dyno power in the 6HP range... That's as good as it's gonna get on a new vortec...I would be a lot nicer if you guys challenged me the right way instead of chastizing me on a forum I don't belong to ... good day

[ March 02, 2003, 03:03 AM: Message edited by: 11H ]

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03-02-2003, 08:49 AM

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BigTex

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Re: Interesting post on intakes from the PUTC forum!

I didn't read all your crap. I do know that the stock air tube / box is not the most efficient design available.

<blockquote>quote:<hr />Originally posted by 11H:
 ...Run it on the dyno after you give the PCM about 200 miles of learn time to change the long term fuel trims ... <hr /></blockquote>Obviously you don't know what your talking about since wide open throttle (open loop) uses pre-defined air fuel ratios and doesn't rely on O2 sensors at all. Ltrims are derived from O2 data during normal driving (closed loop) and would play no part what so ever on a dyno. Learn your stuff before you start posting here. :b

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