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  1. Heffner Performance

    Heffner Tune and Pully Fuel Recommendation?

    Sorry I didn't respond to this sooner. I had a nasty stomach virus yesterday which rendered me out of commission. If you run 100 octane fuel with the 100 octane tune you should expect to pick up another 30 horsepower or so. Since this tune is designed for this fuel you should have no concerns...
  2. Heffner Performance

    Another example of why....

    Actually it looks like some free advertising for St. Louis Motorsports to me. I have a friend that owns an exotic car business in Canada who posted videos of running high speeds on public roads. It ended up on every news channel in the country. He said that business exploded overnight from all...
  3. Heffner Performance

    Anything Better???

    Great story, Mike! Memories like this are simply priceless.
  4. Heffner Performance

    Who's car is this? GT on Google maps

    I don't think it's a late model FGT. It doesn't appear to have the divided hood.
  5. Heffner Performance

    Heffner twin turbo lp560 featured in car and driver magazine!

    Thanks. The owner of this car has a few different locations. The car spends most of it's time in California.
  6. Heffner Performance

    Heffner twin turbo lp560 featured in car and driver magazine!

    A few months back we shipped our first Twin Turbo LP560 up to Michigan to give the guys at Car and Driver Magazine a chance to test it out. I went up to meet with them and observe as they spent the entire day weighing, photographing and driving the LP. My good friend Dave Bannister was good...
  7. Heffner Performance

    New Billet Upper Seat inserts to match your Hot Buttons!!!!!!!!!!

    That is an example of some of the finest cnc machine work that I have ever seen. Fantastic job!
  8. Heffner Performance

    Which pulley

    For what it's worth, we have removed the harmonic balancer from several GT's with the engine in the car with a standard balancer puller.
  9. Heffner Performance

    Heffner Twin Turbo Audi R8

    I expect the V10 R8 will make similar numbers to the LP560 (around 700 rwhp on 93 octane). The TT V8 cars will handily outrun the factory V10 cars.
  10. Heffner Performance

    Heffner Twin Turbo Audi R8

    For the past few months we have been developing our system for the Audi R8 V8 and will be getting started on the V10 shortly. If you've ever driven one you already know that it's a great car but lacked the horsepower to thrill you. We have solved this issue! The car in stock form makes a bit...
  11. Heffner Performance

    6 Days at Heffner Performance.

    It does not have to be that scientific.
  12. Heffner Performance

    6 Days at Heffner Performance.

    Chip, I can't thank you enough for the excellent coverage of the build, giving us the opportunity spend the week with you or for having us build your dream car. It was truly our pleasure to have had you with us throughout the build process and I'm very happy to hear that you are enjoying the...
  13. Heffner Performance

    saleen s7

    I noticed the guy has a jet powered fire truck in the driveway as well.
  14. Heffner Performance

    Audi S4-S5-S6 impressions

    I've got an S5 for a daily driver and absolutely love it. It's comfortable, sporty, looks great and has every bell and whistle you could want. Gas mileage is not the best but other than that, no complaints.
  15. Heffner Performance

    Happy B-Day charleybeck !!

    Happy Birthday Charley! I've been hanging out with your dad all week while we get your birthday gift together. I hope your knee gets better soon so you can take it for a spin! Here's to many good years to come.
  16. Heffner Performance

    Anybody's GT need a fancy set of new shoes?

    Hi guys, Yes, these will clear the Brembo 6 piston brake calipers. The tire sizes that I recommend and have used with this combination are: Michelin Pilot PS2 275/30/19 Front Michelin Pilot PS2 335/30/20 Rear
  17. Heffner Performance

    Anybody's GT need a fancy set of new shoes?

    I have a complete set of HRE 593R's in stock. They are 19" fronts and 20" rears. Gloss black centers and chrome lips. These are machined for our center bolt conversion which we also have on the shelf and ready to go with the wheels. Of course my opinion is biased but this is one of the best...
  18. Heffner Performance

    Hi there, If there are any questions that you have regarding your GT that I may be able to...

    Hi there, If there are any questions that you have regarding your GT that I may be able to help with, please don't hesitate to give me a call at the shop, 941-359-0900 or on my cell phone, 941-592-6402. I'll look forward to hearing from you.
  19. Heffner Performance

    Heffner compare to Hennessey

    I'm more modest.:lol
  20. Heffner Performance

    Congratulations to our forum member Boatracer!

    Congratulations to Dave and the crew. That is unbelievable! I hope you're enjoying the GT.