Chip, thanks for the great write-up and excellent pictures of your new transformed GT. It really tells a story, and the install looks as professional as I would expect from Jason's team and for that matter the Ford team had they decided to give us a TT setup. Thanks for dropping the $ to give us the pictorial experience. I look forward to seeing it perform at Las Vegas!
Being the technical junky that Frank likes to point out, a little emphasis on a few items Chip and Jason talk to on the TT conversion.
I asked Jason how important the headers were to the performance of his turbo system. He told me they probably weren't that important but that aesthetics and purity demanded their inclusion. The entire system just looks more proper with those beautiful stainless steel headers.
Chip
Don't get me wrong here, I am a big fan of stainless steel headers. They look great and give the engine a "tubular resonance" which just sounds mean. Typically alterations to getting the air/fuel mixture INTO and OUT OF the engine are where the most performance gains can be had for "relatively" low cost. But on our FGT as has been pointed out by Jason and verified through my own Ford sources, the GT engine team gave us OE manifolds which flow without out restrictions or significant backpressure. Thus one's choice to install headers is really only for asthetics and will not give you any more significant power. But it sure looks great!
Gentlemen,
While assembling parts prior to the build of my car, Jason asked me if I wanted him to use the Accufab throttle body. I fired back with the two obligatory questions. 1. What is the performance gain? 2. How much does it cost?
Answers: 1. Almost no performance gain according to our dyno testing with our twin turbo installation. 2. It costs $650.
Uh.......OK.
So I guess nobody buys that right?
Jason responded, "Actually, pretty much everybody buys it."
Then he continued, "Because it looks much better. The factory throttle body is pretty efficient but it looks kinda rough."
So I went out to my garage and actually looked at my stock throttle body.
Yeah, I'm going to have to go with the Accufab TB. A real steal at $650!
Chip
Chip
Same goes for our throttle body. Other than the asthetics of a polished exterior which I agree wholehartedly it looks great, the OE unit flows air just fine thank you. And even flows air at mass flow rates fed by twin turbos significantly higher than was ever envisioned in the OE configuration. Sure, you can make it LOOK better externally, but the internal flow attributes are optimized for what our 5.4 needs and then some.
Again all this points to is the original Ford designers on the team did a great job of giving us all the PERFORMANCE they could under the weight/cost/durabulity constraints imposed on the car by FoMoCo. The team did it right and gave us one heck of a car for what we paid.
(But feel free to write a check to make yours look better through your glasses....)