More GT products at SEMA . JBA headers, high flow cat and muffler..IMHO the HP gains seem optimistic .. But I'm just the official unofficial SEMA reporter...:biggrin Film at 11:00
Thank you for sharing however they appear a bit "ROUGH" to me and considering that these are at SEMA in the spot light leave me highly suspect.
Takes care
Shadowman
From the pictures it seem that some of the welds are not as clean as they could be. Also this example must have been taken off of the test car. It appears to have been heat cycled many times. Anything else that could have been done better?
Hey guys, thanks for your comments. I’m Steve Hill with Xtreme Motor Sports / JBA and a Heritage owner (myheritage).
Just wanted to let you know why the system looked “rough.” This is a prototype and still under development! These are the same headers and cats I was testing on my car at the 2007 Rally in Newport Beach. As I told some of you then, we are also in the process of developing a much lighter muffler, with a deep, healthy sound.
I had a choice to make: to bring the prototypes to SEMA, or forget it until next year.
So, I brought them to SEMA so you could see it, touch it and let us know what you think.
(Even Chip Foose has brought products that are still in development to SEMA for feedback.)
It takes a lot time, effort and money to develop a system like this. Jay Biddle and the engineers at JBA Racing make the best performing headers in the industry. So, please understand, this not the finished product that would go into your car.
Now we are looking at different coatings that can be utilized. My thoughts on it are a silver or titanium metallic ceramic coating. I have thought about chroming or polishing the headers but my experience has been that the chrome turns blue and the stainless turns brown. Not exactly what I want under my hood. What do you think?
At the Rally, some of you said that the rear-cover needed to be raised after a good run because the heat from the engine warps the vent moldings. This issue is one that I thought needed to be addressed.
Our main objectives are to increase rear-wheel hp by over 100 on a hot, summer afternoon, to create a muffler that was light and sounded good and to reduce the heat in the engine compartment.
We accomplished the hp increase on my GT. When first tested, my car was putting out 488 rwhp. After the install of the headers, cats, muffler and tune, we got 592 rwhp @ 5,937 rpm. This was done in the afternoons of July thru September when it was hotter ‘n hell outside, so I would know that you’d have the same results on a hot summer afternoon. We did 3 dyno runs to get the engine heat-soaked and get the tires heated up, then recorded the stats on the 4th run. The reason the rpm was only at 5,937 is because the dyno has a limit of 160 mph. These statistics were in the flyer at JBA’s booth at SEMA.
Thank you for taking the time to answer several questions and for creating a new one. BTW your points were well made and I wish only the best for your project
However over 100 HP gained at the rear wheels as the result of the exhaust alone? This seems extreme; please tell me more.
EDITED BY Shadowman; I was careless in reading the reply and did not recognize that an associated tune was completed during this process as such the idea of gains in the 100 RWHP range still seem high teo me but certainly are more in line as a the result of a combined effort. Regardless it is nice to read that the gal responds well to a better flowing exhaust system.
All the best
Shadowman
Thank you for taking the time to answer several questions and for creating a new one. BTW your points were well made and I wish only the best for your project
However over 100 HP gained at the rear wheels as the result of the exhaust alone? This seems extreme; please tell me more.
All the best
Shadowman
Shadowman, I think his stated HP increase included a tune - at least that's the way it reads to me. Still, IMO seems like a big number for exhaust and tune only as well.