The 08 Bullitt intake, everything you wanted to know and more, Dynotesting...
Bullitt Member
Joined: August 13, 2007
Posts: 342
Likes: 0
I noticed that based on the stock MAF's air transfer function, Ford essentially chose the stock airbox for the stock engine because they seemed to be sized proportionally for the engine's hp/fuel requirements. The V6's air transfer function is different and is sized more appropriately for a smaller engine.
Legacy TMS Member
Joined: May 16, 2004
Posts: 5,205
Likes: 18
From: Bristol, TN
Generally speaking, you're looking at more losses than gains with dyno error. Thinking otherwise is being overly optimistic or part of a plan to try and sell a product.
It also depends on how high the IAT is because the PCM pulls ignition timing only above a certain temperature, and even then it is multiplied by a value in a table as part of the final spark calculation. The stock 07 GT calibration calls for pulling ignition timing above 100F IAT, but the actual value is just part of the final spark calculation. It is not directly added/subtracted from this final spark. Unless you plan to drag race in Death Valley at 120F ambient, it won't be a significant problem. The OEM does extensive cold temperature and high temperature testing with the stock airbox to prevent engine damage in extreme conditions (the PCM advances spark at colder temperatures).
Real world test results can be easily skewed to convey a point or to sell a product. The engine needs a finite quantity of air for a given configuration. Using an air intake or exhaust designed for significantly more flow will not cause you to gain significantly more power.
I noticed that based on the stock MAF's air transfer function, Ford essentially chose the stock airbox for the stock engine because they seemed to be sized proportionally for the engine's hp/fuel requirements. The V6's air transfer function is different and is sized more appropriately for a smaller engine.
It also depends on how high the IAT is because the PCM pulls ignition timing only above a certain temperature, and even then it is multiplied by a value in a table as part of the final spark calculation. The stock 07 GT calibration calls for pulling ignition timing above 100F IAT, but the actual value is just part of the final spark calculation. It is not directly added/subtracted from this final spark. Unless you plan to drag race in Death Valley at 120F ambient, it won't be a significant problem. The OEM does extensive cold temperature and high temperature testing with the stock airbox to prevent engine damage in extreme conditions (the PCM advances spark at colder temperatures).
Real world test results can be easily skewed to convey a point or to sell a product. The engine needs a finite quantity of air for a given configuration. Using an air intake or exhaust designed for significantly more flow will not cause you to gain significantly more power.
I noticed that based on the stock MAF's air transfer function, Ford essentially chose the stock airbox for the stock engine because they seemed to be sized proportionally for the engine's hp/fuel requirements. The V6's air transfer function is different and is sized more appropriately for a smaller engine.
FR500 Member
Joined: August 23, 2004
Posts: 3,153
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SUPERCHARGED RED ROCKET ------------------Master-Moderator
Joined: May 11, 2006
Posts: 10,644
Likes: 2,509
From: Carnegie, PA
Being that Steeda designs the FRPP CAI. I'm curious if they also design the Bullitt, and the new V-6 intake for Ford Racing..
But then again, the more I look at the Bullitt airbox. It seems to look as though Airaid may have designed it as well. As Airaid's airbox, has a similar wrap around appearance, and also uses a similar S-curved intake inlet..
But then again, the more I look at the Bullitt airbox. It seems to look as though Airaid may have designed it as well. As Airaid's airbox, has a similar wrap around appearance, and also uses a similar S-curved intake inlet..
Bullitt Member
Joined: December 28, 2004
Posts: 398
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Being that Steeda designs the FRPP CAI. I'm curious if they also design the Bullitt, and the new V-6 intake for Ford Racing..
But then again, the more I look at the Bullitt airbox. It seems to look as though Airaid may have designed it as well. As Airaid's airbox, has a similar wrap around appearance, and also uses a similar S-curved intake inlet..
But then again, the more I look at the Bullitt airbox. It seems to look as though Airaid may have designed it as well. As Airaid's airbox, has a similar wrap around appearance, and also uses a similar S-curved intake inlet..
SUPERCHARGED RED ROCKET ------------------Master-Moderator
Joined: May 11, 2006
Posts: 10,644
Likes: 2,509
From: Carnegie, PA
Shelby GT500 Member
Joined: October 9, 2006
Posts: 2,757
Likes: 1
From: It's tough in the jungle !
It looks to me that the new Bullitt CAI intake has some fit issues.... note photo from Bullitt #95 for sale on ebay!..... crunched air filter....and the seal that goes across the CAI intake tube on the shroud loose and not attached on one end!....
Team Mustang Source
Joined: July 4, 2006
Posts: 2,872
Likes: 1
From: St. Louis Area
I don't think the crumpled filter is a problem with fitment. Somebody probably pushed on it a little hard when they were checking out the car. Those pleats are fairly easy to bend, but it will not cause any problems with performance of the filter.
Shelby GT500 Member
Joined: October 9, 2006
Posts: 2,757
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From: It's tough in the jungle !
V6 Member
Joined: December 28, 2007
Posts: 60
Likes: 1
Team Mustang Source
Joined: June 28, 2004
Posts: 3,069
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From: Fort Worth,Tx
We've tried to tell him that the real world is much different but, he won't listen.
Team Mustang Source
Joined: April 8, 2004
Posts: 765
Likes: 1
5.0 Mustang mag, March '08 issue also states the Bullitt shifter is a running hardware change for all manual tranny 2008 Mustangs. Others report this is not a Hurst/FRPP shifter, it is a new OEM shifter. Kevin do you have any catalog pics of this shifter - Reply in the Bullitt shifter thread!
