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CFM issues / Wilson intake

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Old Jul 3, 2009 | 07:12 AM
  #1  
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CFM issues / Wilson intake

Saw a few pics of exploded CFM intakes.
I really like the performance of the CFM , but is it a time bomb at 60 + pounds of boost?

The Wilson claims maximum gains ,& I hate to go back-words in performance.
Its bad enough I wind up doing most mods twice.
If these gains from the Wilson are even half of what they claim , how come nobody is running them here?

I really would like to here some opinions .
Thanks for your help, doug


http://www.wilsonmanifolds.com/shop/...t_detail&p=117
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Old Jul 3, 2009 | 08:23 AM
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I like the look and idea behind the Wilson. It will most likly be the air horn that goes on my truck. The price is steep, but you get substantually more product. All other horns have to pass threw the same little 3" square hole. Only so much can be gained. But the Wilson seems to take things to the next level.

The gains......Well, I doubt they are in the 300lbft range, but it does say with the right "tuning". So if you have a truck trying to stuff 1000hp of air in threw the stock intake, you might gain 300lbft. I would be more interested in the EGT drop and flow to number 1&6 cylinder.

I wouldn't feel good running 60+psi threw a cfm. Hate the idea of being stranded somewhere with no intake or the engine eating a junk.
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Old Jul 3, 2009 | 09:34 AM
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Its been said that the exploded CFMs were more coaxed to fail than a real fault on CFM. The ones you see exploded more than likely also had Nos in the equation. Very high boost #s.

Soulezoo has the CFM like me, and I know hes pushing some serious boost also. Mine has been great, course I don't see no more than 45psi.
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Old Jul 3, 2009 | 10:24 AM
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We see 60-70psi regularly on CFMs on the dyno, and I have never personally seen a failure. I would argue that either someone tapping a non-bossed CFM or spraying some -300 degree nitrous in the horn (thermal tweaking) are what have caused failures. Boost on its own is incredibly unlikely to have caused that issue. 60 or even 100PSI won't make a thermoplastic tube explode unless it has a flaw somewhere. and even then it would pop, but not explode.

ANyway, that wilson looks awesome in person, I need to test one to see about the actually numbers.
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Old Jul 3, 2009 | 10:50 AM
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I really like the look of the Wilson. Been debating on getting that one. I wish someone (other than Wilson) had dyno sheets to show us with there mods...
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Old Jul 3, 2009 | 10:51 AM
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I've hit 90 psi on mine. No issues at all and have 3 holes into it for water meth.
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Old Jul 3, 2009 | 04:16 PM
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The runs were done with a stock engine on an 2005 truck with 8k on the odometer. The only other mod on the truck was a built tranny. The runs were done using Smarty with TNT tune. If you look at the graphs, the power comes in sooner, there is NO increase in peak HP since it is determined by fuel.

Richard
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Old Jul 3, 2009 | 09:02 PM
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Intake impression.

I'm running the AFE Bladerunner. It's rated at about 90% efficiency compared to some. To be honest,when emissions come here,it's got to come off. I didn't feel that great a boost in power. Certainly much less than my Smarty on sw#1. I got it for $249 from 4WheelParts bargain days in November a year ago or so.
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Old Jul 3, 2009 | 09:13 PM
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Originally Posted by raychem
The runs were done with a stock engine on an 2005 truck with 8k on the odometer. The only other mod on the truck was a built tranny. The runs were done using Smarty with TNT tune. If you look at the graphs, the power comes in sooner, there is NO increase in peak HP since it is determined by fuel.

Richard

I have a few questions that seem to be bugging me and you seem to know some about the Wilson, so if you don't mind......

How is it that there was no hp gained? I totally understand the idea that there was no more fuel added, but at the same time you should be getting more air, so some of the wasted fuel, or black out the pipe would have been burned, therefore producing more hp. Not trying to dissagree with ya, just trying to get my facts straight. I really like what the Wilson has brought to the table in inovation. But to only gain tq is a bit mystic. If you gained tq, it would have been from more air sooner. If your getting it sooner, you should have also been getting it later, so i'm a bit confused.

Straighten me out Richard. Am I totally wrong here?
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Old Jul 3, 2009 | 10:20 PM
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I also a couple of questions/statements to be clarified.

1. Horsepower is just a function of torque. take (torqueX engine speed)/5252= horsepower. so unless I am missing something...usually you increase something on the left side of the equation, and something on the right has to go up.

2. what happens if you mill your head to accept the thrasher and for whatever reason you have to go back to stock or stock-like? looks like that shape would leave you SOL.

3. the banks big hoss didnt claim this much gain and it seems like a more efficient design than any other.

4. my CFM appears to be carbon fiber. Is it just plastic with a paint job? because composite materials have some of the best tensile strength as well as level of yield before delamination of anything you can get.
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Old Jul 3, 2009 | 10:35 PM
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I didn't see anything about milling the head???? I thought you just had to put the new intake plate on and the horn bolted up???? From what I can gather it just takes advantage of the extra space between injector line 1 and 2 that the factory does not.
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Old Jul 3, 2009 | 10:38 PM
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I would have to look, but I dont think that part of the manifold just unbolts. thats why I said mill it. It may just come off and be interchangeable. I was assuming because you have to mill off the bottom half and tap the block for a big hoss.
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Old Jul 3, 2009 | 10:45 PM
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I'll have to double check as well, but I thought the plate that covers the intake "troff", if you follow, was just a chunk of alluminum.
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Old Jul 4, 2009 | 08:59 AM
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There is a removable plate. (Troff cover)
The Wilson plate has a bigger foot print (larger cut-out).
Also the underside of the plate allows for a clearer path for air flow.
If I remember reading correctly the stock plate has restrictions on its underside. (material for injector hold down bolts)
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Old Jul 4, 2009 | 09:15 AM
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Originally Posted by JFlory
I have a few questions that seem to be bugging me and you seem to know some about the Wilson, so if you don't mind......

How is it that there was no hp gained? I totally understand the idea that there was no more fuel added, but at the same time you should be getting more air, so some of the wasted fuel, or black out the pipe would have been burned, therefore producing more hp. Not trying to dissagree with ya, just trying to get my facts straight. I really like what the Wilson has brought to the table in inovation. But to only gain tq is a bit mystic. If you gained tq, it would have been from more air sooner. If your getting it sooner, you should have also been getting it later, so i'm a bit confused.

Straighten me out Richard. Am I totally wrong here?
Thats not so easy to explain. Im confusing myself trying to put it into words.
But if your fueling faster than supplying air = black smoke
If on the top, your turbo is out of air =black smoke
Making it easier for the air you have to get there =faster spool up =less black smoke.
None of the intakes make claims of large gains over 2500 rpm.
I think
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