2015 GT first autocross

[Mr Black]

2015 looks nice and I'm glad you're enjoying the precision of the front end.....but WOW that Boss sounds mean and seems to be absolutely flying. What kind of mods were on it to get that kind of performance?

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[murphyslaww]

We've been wet every event day in Austin. We'll be at the A&M Texas tour location for a test and tune event this weekend. Praying for a little dry weather.

Running ESP in a decidedly non-ESP setup, but at least on 1+ year old, 40 run hoosiers...:doh: (from Brian Burdette and Eric Yee of F-stock fame.) My first time on hohos as well. And only 295's, so I'm sure there will be no usable data for anyone from it.

As is, it's probably good for nothing but CAM-C, but the parts will come, eventually.

Question. I posted it in the ESP thread as well, but how are you guys planning on moving race wheels ? The 295's on 19x9.5 wheels are a pretty tight fit in the car. 315's on 10 or 11 inch wheels are probably just about not going to fit without a shoehorn.

 

[clubricer]

2015 looks nice and I'm glad you're enjoying the precision of the front end.....but WOW that Boss sounds mean and seems to be absolutely flying. What kind of mods were on it to get that kind of performance?

Sorry for the late response. the Boss mods were as follow:

SW headers, xpipe
Magnaflow catback (no cats)
Ram twin disk clutch and lightweight flywheel
KW v3 shocks and springs
Strano Front Bar
Eibach Rear bar
Baer two piece cross drilled and slotted front rotors (Cross drilled and slotted for further weight reduction)
Light weight battery
Fays 2 Watts link
Sparco seats
John Lund's custom lopey idle tune (to retain the throttle response and off throttle deceleration that is similar to Ford's Track key off throttle immediate RPM drop)

I think that's about it

 

[clubricer]

A couple more recent videos at a 2 day event in Zmax. Car is still relatively stock, but did the following:

Muffler delete with two turn downs exiting right behind the rear axle.
Front only alignment ( added a bit of negative camber)
Bridgestone RE71 tires 275s square <-- Biggest size they make. The front and rear can easily accomodate 305s on the stock wheels

Day 1

[ame]


Day 2

[ame]

 

[murphyslaww]

A couple more recent videos at a 2 day event in Zmax. Car is still relatively stock, but did the following:

Muffler delete with two turn downs exiting right behind the rear axle.
Front only alignment ( added a bit of negative camber)
Bridgestone RE71 tires 275s square <-- Biggest size they make. The front and rear can easily accomodate 305s on the stock wheels

I talked to one of the Bridgestone guys at the Texas tour and he handed me a pamphlet that had a 285/35-19 on it. He didn't seem too knowledgeable about when different size tires would be available, but I think there were at least 285/35-18's on Tirerack, which have since disappeared.

If I could get a set of RE-71's in a 285, I might just run STU for the rest of the year while I aggregate some of the ESP parts.

It's still fun chasing the Boost buggies at my level of experience.

***Bridgestone site shows a 285/35-19. Be nice If I could find a set.

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