Hennessey

[SPRSNK]

Over on the "Z" I challenged Hennessey to substantiate their rediculous horsepower claims with dyno sheets. They couldn't do it, and I was banned for life from the site for trying.

I wouldn't do business with Hennessey if they had the last gallon of gasoline on earth.

They won't have the last gallon of gasoline. I will

 

[Ruger]

They won't have the last gallon of gasoline. I will

I can live with that quite happily!

 

[DubbsFaris]

They won't have the last gallon of gasoline. I will

Its funny because its true on so many levels, right?

You will also have the last barrel of oil too!

(BTW- We have 7 wells going on line by the end of the year on our ranch now! Thank God for Texas oil!) Cant wait to see what we hit!

 

[AKBILL]

I have the Hennesy cai and a 5 star tune

i like the Hennesy because its made out of alumumium and looks really nice and has a K&N filter

Custom tune for 87 and 90 performance and a 90 tow 90 octange is the highest grade avable in Alaska

 

[Ruger]

K&N filters are pretty good with carburetors, but not so hot in some fuel injection systems. There is an incidence of the oil gumming up air flow sensors and throwing codes, and requiring a professional fuel injection cleaning. Unfortunately, I read about this AFTER it happened to me.

 

[Maxx2893]

Also just to clear thing up. While metal tubes look nicer than plastic (to some). Metal transfers energy much more efficiently than plastic, in our case this is bad. Energy in our circumstances means heat, a metal tube will heat up faster than a plastic tube. The hot tube will then heat your "cold air" which negates the benefits of a CAI*. After all the reason to use a CAI is to deliver the coldest air to your engine as efficiently as you can.

* The air will not be heated entirely, however it will heat some.

 

[Ruger]

Roger that, Maxx. In fact, the rubber/plastic tubes get hot, too. They have to, they live right on top of a big damn engine! Here's a cheap experiment: The next time you get out of the truck after a drive in which the engine came to full operating temperature, pop the hood and see how warm the intake tube is. I think it'll surprise you. The photo here shows my solution - under $20.

 

[Boss Hoss]

Also just to clear thing up. While metal tubes look nicer than plastic (to some). Metal transfers energy much more efficiently than plastic, in our case this is bad. Energy in our circumstances means heat, a metal tube will heat up faster than a plastic tube. The hot tube will then heat your "cold air" which negates the benefits of a CAI*. After all the reason to use a CAI is to deliver the coldest air to your engine as efficiently as you can.

* The air will not be heated entirely, however it will heat some.

It will also cool off faster after being heat soaked in slow traffic.

 

[BigJ]

Guys... you all know how much I love Hennessy... but facts are facts. The direct coorelation between intake materials, heatsoak and performance is far FAR more complicated than pointing at metal and saying its inferior to plastic. We spent a TON of time on this back in the day (and a ton of money I might add) testing this on a different vehicle platform, but the results really are independent of the particular car we were in. They directly apply to our trucks equally as well.

If you are totally bored, and if you've got nothing to do all day, read this and hundreds of offshoot threads and posts it generated: Intake Air Temp Tests III: Street Heat *Results*

If on the other hand you just want the bottom line? Do not chose an intake based on the material its tube is made of, and just go ahead and throw away what your instincts are telling you about metal resulting it hotter intake air temps. The results of the tests in that thread, and all the tests surrounding it simply don't bare that conclusion out. Its FAR more a function of material thickness, ambient air temps and tube design... all of which seemed to really only apply when the thing is running but stopped. Start moving and the IAT (intake air temps) start to equalize within seconds.

 

[Maxx2893]

It will also cool off faster after being heat soaked in slow traffic.

This is also true. That's the flip side of metal vs. plastic.

Or when you turn the truck off for a brief moment, like say to fill up with gas.