Info GIAC ECU Reflash
08-14-2013, 04:41 PM
#1
Three Wheelin'
Thread Starter
Info GIAC ECU Reflash
GIAC, a company from Irvine, CA is advertising 997.1 ECU reflashes in several magazines I subscribe to. I've also seen and read posts on 6-Speed about GIAC. The posters appear to like the product and results. I'm not familiar with them. Does anyone have any experience with GIAC?
08-14-2013, 05:40 PM
#2
Rennlist Member
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Here's a "first impression" from a few years ago. Interesting read at the time and may still have some relevance.
https://rennlist.com/forums/997-turb...highlight=GIAC
https://rennlist.com/forums/997-turb...highlight=GIAC
08-15-2013, 02:05 PM
#5
I'll let you know soon, my car is going in next week to Wright Motorsport to have the GIAC tune installed as well as a new billet diverter valve. I have 30+ runs on the 1/4 mile track with my car over the last 3 months totally stock so I can compare the results of the tune by itself. I will eventually do the same thing with an exhaust, but I prefer just changing one component at a time and then checking quantitative results. For reference, my 1/4 mile times have all been right around 11.6 with a few 11.5's and 11.7's thrown in, and the occasional 12.2 when I turn PSM off and spin the tires. Trap times are always around 119 mph with my highest being 119.997 and lowest at 118.750. I'm going to have a race gas map along with the pump gas, so I'll also post good numbers comparing those.
08-15-2013, 02:32 PM
#6
Three Wheelin'
Thread Starter
I'll let you know soon, my car is going in next week to Wright Motorsport to have the GIAC tune installed as well as a new billet diverter valve. I have 30+ runs on the 1/4 mile track with my car over the last 3 months totally stock so I can compare the results of the tune by itself. I will eventually do the same thing with an exhaust, but I prefer just changing one component at a time and then checking quantitative results. For reference, my 1/4 mile times have all been right around 11.6 with a few 11.5's and 11.7's thrown in, and the occasional 12.2 when I turn PSM off and spin the tires. Trap times are always around 119 mph with my highest being 119.997 and lowest at 118.750. I'm going to have a race gas map along with the pump gas, so I'll also post good numbers comparing those.
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08-15-2013, 11:28 PM
#8
Interesting topic when the flash thing comes up. All the promise of extra power by modifying certain parameters within the ECU. As an EE with many years of experience designing systems, I have always learned about compromise. Yes we can design for optimum performance but we tend not to push the parameters beyond advertized specifications. Call it conservative if you wish. It’s a systemic effect that will eventually lead to an out of tolerance condition that will undoubtedly lead to failure. Porsche has spent an enormous amount of time and research to present to us a perfect “Compromise”. I am biased.
08-15-2013, 11:53 PM
#10
It's a tip. I could probably squeeze a little more time out if I turn PSM off, however I haven't been able to control the launch as well that way. Once I get a little more practice times should improve. The traction control still kicks in on launch so there's definitely time to be made up there.
atcbi5, I also work as a systems engineer and am very familiar with processes running out of control. However with a quality tune, I don't think you're endangering engine life. GT3's run higher rpms all the time, GT2's run higher boost, both cars have advanced timing for race gas, etc. These engines are amazing. For a tune, here's where I think the compromise occurs: lower gas mileage, higher environmental emissions, maybe a little less comfort as a daily driver, possibly more cabin noise, more touchy throttle response. I think these are all things Porsche considered when designing the car for the 95% who will never track the car, and never run with a tune. For the other 5% of us who are willing to sacrifice a few things for more performance, it's not a big deal.
atcbi5, I also work as a systems engineer and am very familiar with processes running out of control. However with a quality tune, I don't think you're endangering engine life. GT3's run higher rpms all the time, GT2's run higher boost, both cars have advanced timing for race gas, etc. These engines are amazing. For a tune, here's where I think the compromise occurs: lower gas mileage, higher environmental emissions, maybe a little less comfort as a daily driver, possibly more cabin noise, more touchy throttle response. I think these are all things Porsche considered when designing the car for the 95% who will never track the car, and never run with a tune. For the other 5% of us who are willing to sacrifice a few things for more performance, it's not a big deal.
08-16-2013, 12:16 AM
#12
Interesting topic when the flash thing comes up. All the promise of extra power by modifying certain parameters within the ECU. As an EE with many years of experience designing systems, I have always learned about compromise. Yes we can design for optimum performance but we tend not to push the parameters beyond advertized specifications. Call it conservative if you wish. It’s a systemic effect that will eventually lead to an out of tolerance condition that will undoubtedly lead to failure. Porsche has spent an enormous amount of time and research to present to us a perfect “Compromise”. I am biased.
Don't waste your money and keep it stock
OK...