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

[Tomas Gunnarsson]

Unless the stacks extend above the roof of the car the temperature slightly above the lid will be very similar to the temp below the engine screen. All the air above the engine screen has just risen from the engine compartment.

Tomas

----- Original Message ----- 
From: "Will Demelo" <wdemelo at cogeco.ca>
To: <detomaso at realbig.com>
Sent: Wednesday, December 05, 2007 12:37 AM
Subject: [DeTomaso] Fw: COOK ENT EFI INDIVIDUAL BILLET AIR FILTERS


> """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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