[DeTomaso] Fw: COOK ENT EFI INDIVIDUAL BILLET AIR FILTERS

Will Demelo wdemelo at cogeco.ca
Tue Dec 4 18:37:58 EST 2007


"""When I did the simulations
 on my 407, the long stacks pumped up the low and mid-range but peak power
took a big hit.  """

I wonder if the short stacks under the stock screen would be subject to 
hotter intake air temp over the tall stacks above the decklid?
Cooler air is better, no?
Will

----- Original Message ----- 
From: "Daniel C Jones" <daniel.c.jones2 at gmail.com>
To: <detomaso at realbig.com>
Sent: Tuesday, December 04, 2007 5:40 PM
Subject: Re: [DeTomaso] COOK ENT EFI INDIVIDUAL BILLET AIR FILTERS


>> Has anyone with an IR EFI system actually tried different length stacks?
>
> I have 3 different stack heights for the 50mm here to test on the dyno
> as part of
> the list dyno project.
>
>> Can you move your torque around a noticable amount or are looks the main
>> benefit?
>
> Simulation says the effect is quite noticeable.  When I did the 
> simulations
> on my 407, the long stacks pumped up the low and mid-range but peak power
> took a big hit.  The short stacks looked to be the best for my application
> and also fit under the stock screen and decklid.  I was somewhat surprised
> to see Mad Dawg went with the tall stacks since I assumed he'd be after 
> top
> end power at the ORR's.  However, there is a synergistic effect with 
> header
> length and he's running the long tube 180's and I'm running short 
> 4-into-1's.
> If we have the time (funds), I'll try the stacks with long and short tube
> headers.
>
> Dan Jones
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