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I ordered the TTS lightweight. So with a Full tank of fuel it scales 3575 lbs without a driver. Exhaust, rims , battery and GT3RS rear seat kit dropped it down to 3490ish with a full tank. Add 200 so 3690 race weight with a full tank on race scales. A typical TTS full tank is 3625 no driver.
Wow!! Then yes, you have to be quite at bit light at race weight and in the car. My old 997.2TTS with me in it scaled 3825 lbs. This 991.2 has to be a bit heavier for sure. My car has the large glass sunroof and all.
I figure I'm up around 300-350 lbs on your car with me in it, at a min.
Very nice weight loss car!! It reflects in those Traps.
Originally Posted by AIM Performance
Good bang for the buck. We end up updating a lot of cars inhouse with the Porsche PIWIS and then tuning them, even 996s and 997s too.
Seems like good bang for the buck. You can try your GIAC race map with Unleaded VP Octanium (Green Cans). 2 bottles to a full tank or 1 bottle to half tank. It is available at most auto parts stores, that will do the trick.
Also for what it's worth, when doing 1/4 Mile pulls and tires are cold the car will always spin more in Sport since 4000RPM is closer to peak torque. I usually do a short hit to warm up and clean off the tires in sport, then switch to individual with aero off, sport plus and traction off and for 1/4 mile launch the car in sport plus. In the summer with good traction, TC ON/OFF doesn't make much of a difference.
So the Upgrade from Porsche was a good thing then. Thanks.
VP Octanium - So does this stuff do any of those bad things people discussed on the "Race gas / Additive" thread?? You saying it's a safe option to Race Gass?
Ah.. Makes sense on the RPM's. My car (could be my older PS4S's and the pressures I run - 35F / 38R once warm in this weather) that keeps it spinning so much on the street. I'll wait till Spring and some new tires for some good 1/8 & 1/4 Dragy times. Seems our Historic track (Atlanta Dragway) is on the chopping block and up for sale. I think it's going to end up being a development
Originally Posted by SamboTT@ByDesign
Awesome Dave. I'm sure that feels way better too!
Thanks Brother!! I've not forgot about you man..lol.
This option after speaking to them with what was already on the car, just made sense to try for now.
For the money, it's a decent gain.
Originally Posted by John D II
Great results, Dave! It's really nice to read about your journey, congrats!
Thank you John!! I'm looking forward to Spring and hearing how yours goes as well. I know you are
Big Swole- yes, VP Octanium uses MMT as it’s main octane booster. I opted not to use any products containing MMT due reports of long term damage to cats, plugs, and 02 sensors. Using it occasionally I’m sure is fine though.
Big Swole- yes, VP Octanium uses MMT as it’s main octane booster. I opted not to use any products containing MMT due reports of long term damage to cats, plugs, and 02 sensors. Using it occasionally I’m sure is fine though.
Thanks!!
For as little as I'll probably run that race tune, I'll just spring for the MS 109 or something similar and make sure to fill with a fresh tank of 93 right afterwards.
The tuner sent me an email with this info on it about the tunes from GIAC and that black TTS that ran the 9.78 @ 139+
The Road Test Network has a long track record of testing a wide assortment of vehicles for their quarter mile acceleration capabilities. Over the last year they have put their latest in house acquisition, a 2018 Porsche 991.2 Turbos S, through a gauntlet of side by side comparisons with other makes and models, and have examined its performance improvement potential with basic after market upgrades. The Road Test Network has recorded impressive quartermile results in the process.
In its original form, without any after-market upgrades, the Porsche 991.2 TTS is formidable. On 93 octane at a density altitude of 1700 in Palm Beach, Florida, the vehicle pulled a best run of 10.617 at 128.10 MPH. For comparison, The Road Test Network later added the first upgrades of a Tubi exhaust and a performance chip. Champion Motorsport, one of the most respected names in the Porsche aftermarket, was tapped to upgrade the engine software program with a GIAC premium fuel calibration. Despite suboptimal conditions ( DA of 2100 ) on testing day, The Road Test Network's 911 Turbo S with upgrades flaunted strong performance improvements, shaving nearly half of a second and pushing another 6 mph. The best quarter mile run on that day was 10.177 seconds at 134.43 MPH.
Still wanting more power from the vehicle, The Road Test Network reached out to Champion and GIAC again, to explore custom tuning options with unleaded race gas ( a higher octane than the premium fuel found at most gas stations ). GIAC, which recently developed multi-map switching for the Continental SDI21 ECU family, created a race mode calibration for the 991.2 TTS. With extensive dyno testing and feedback from Champion Motorsport, the team at GIAC completed a race gas calibration that added 117 horsepower at the wheels, or 133 HP at the engine, over what the vehicle put out in its OEM configuration. These improvements in power resulted in significantly faster times and speeds at the track. With just the GIAC race tune, Tubi exhaust and racing fuel, the Road Test Network's 991.2 Turbo S ran a 9.97 second 137 MPH quarter mile at a less than ideal density altitude of 2200 in Palm Beach Florida. Following concerns that traction issues might be holding the car back, the Road Test Network team upgraded the OEM tires to Toyo R888s and further improved their quarter mile to a 9.78 second 139.59 MPH result at a slightly better DA of 1500.
To date this is the fastest quarter mile time and speed posted publicly for a Porsche 991.2 TTS with so few modifications. Special thanks to The Road Test Network and Champion Motorsport, for all their testing of and feedback on these GIAC DME calibrations.
Lol at “ Despite suboptimal conditions ( DA of 2100 )”. I’ll kill for 2100ft DA. 3500ft is a rare good day here. Typically +4000 But I’ve raced at other sea level locations.....the force is strong there. Rockingham....
The tuner sent me an email with this info on it about the tunes from GIAC and that black TTS that ran the 9.78 @ 139+
The Road Test Network has a long track record of testing a wide assortment of vehicles for their quarter mile acceleration capabilities. Over the last year they have put their latest in house acquisition, a 2018 Porsche 991.2 Turbos S, through a gauntlet of side by side comparisons with other makes and models, and have examined its performance improvement potential with basic after market upgrades. The Road Test Network has recorded impressive quartermile results in the process.
In its original form, without any after-market upgrades, the Porsche 991.2 TTS is formidable. On 93 octane at a density altitude of 1700 in Palm Beach, Florida, the vehicle pulled a best run of 10.617 at 128.10 MPH. For comparison, The Road Test Network later added the first upgrades of a Tubi exhaust and a performance chip. Champion Motorsport, one of the most respected names in the Porsche aftermarket, was tapped to upgrade the engine software program with a GIAC premium fuel calibration. Despite suboptimal conditions ( DA of 2100 ) on testing day, The Road Test Network's 911 Turbo S with upgrades flaunted strong performance improvements, shaving nearly half of a second and pushing another 6 mph. The best quarter mile run on that day was 10.177 seconds at 134.43 MPH.
Still wanting more power from the vehicle, The Road Test Network reached out to Champion and GIAC again, to explore custom tuning options with unleaded race gas ( a higher octane than the premium fuel found at most gas stations ). GIAC, which recently developed multi-map switching for the Continental SDI21 ECU family, created a race mode calibration for the 991.2 TTS. With extensive dyno testing and feedback from Champion Motorsport, the team at GIAC completed a race gas calibration that added 117 horsepower at the wheels, or 133 HP at the engine, over what the vehicle put out in its OEM configuration. These improvements in power resulted in significantly faster times and speeds at the track. With just the GIAC race tune, Tubi exhaust and racing fuel, the Road Test Network's 991.2 Turbo S ran a 9.97 second 137 MPH quarter mile at a less than ideal density altitude of 2200 in Palm Beach Florida. Following concerns that traction issues might be holding the car back, the Road Test Network team upgraded the OEM tires to Toyo R888s and further improved their quarter mile to a 9.78 second 139.59 MPH result at a slightly better DA of 1500.
To date this is the fastest quarter mile time and speed posted publicly for a Porsche 991.2 TTS with so few modifications. Special thanks to The Road Test Network and Champion Motorsport, for all their testing of and feedback on these GIAC DME calibrations. Quarter Mile Comparison Chart.Vehicle ConfigurationETTrap Speed
(MPH)Density Altitude
Some more data points for comparison. I just started working with a remote customer in Texas and his car did 7.62 60-130 Stock and 10.57@131 1/4 Mile on the Dragy. It is a Model Year 2017.
Some more data points for comparison. I just started working with a remote customer in Texas and his car did 7.62 60-130 Stock and 10.57@131 1/4 Mile on the Dragy. It is a Model Year 2017.
10.57 seems Strong for stock, Right?? That 131 seems really strong for stock too. Or are these normal.
7.62 seems decent too.
Did he say what DA that was? I assume it could mean several tenths depending on DA.
I've run 10.59@132 and 10.68@135 with my car lots of times, Swole... stock and didn't remove a single thing to the car, nor did I prep it at all. Always get wheelspin at that track, too.
Thought I would chime in but I just had my car remotely tuned from APR but was able to get some 1/4 times in first. The only mods on my car is the d088 inlets (which sounds Awesome btw) , CSF Intercoolers, and a BMC Filter.
Bone Stock the car ran 10.6@129. Since the tune my first 60-130= 6.59
Monday I have a Tubi Exhaust Coming and 200 cell cats. Not sure if that will change much after. Just for reference and some may remember me I have the little white carrera with the pure turbos. That car would do 6.6 60-130 and pulled a 10.1 in the 1/4 on street tires on E85..
Ran a FBO GTR on 93 and put 5 cars on him from a roll and also ran a FBO ZL1 with upper pully, 670whp and got him too about 3 cars..
I've run 10.59@132 and 10.68@135 with my car lots of times, Swole... stock and didn't remove a single thing to the car, nor did I prep it at all. Always get wheelspin at that track, too.
My car ran a 10.48 @ 130mph bone stock. It’s an 2018. That was a street pull too, not at a drag strip.
I remember you and I discussed these runs after I had my original boost leak fixed riiiiight after I got this car. I immediately went out to “test” the repair and this was my 1st pull. I knew boost leak was fixed. The car had full air pressure and was stock right down to the valve caps.
01-16-2021, 12:01 AM
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