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Re: New M4 GTS Announced
d997h:Well, where else would you get the water for the turbo then ??? ...
Something like this could have been incorporated into the wing 
No, my question was seriously meant, for a change. Under normal driving conditions you need to fill water every 5th time petrol is filled? What about a track day? Any risk you stand there with half a petrol tank and no water...
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2015 981 Cayman GT4 | White | Full Bucket Seats | Sport Chrono
2014 991 Carrera 4S | Dark Blue Metallic | PDK | Sport Chrono | SPASM
Re: New M4 GTS Announced
My Lancia Delta HF Integrale street car had a water injection (power was around 280 hp), very likely not as sophisticated as the one used by BMW but still... 
The water had to be refilled from time to time but I checked the level. I assume the BMW system is much more customer friendly and sophisticated, so it will very likely indicate when to fill up and in a way that you don't have to do this during a track day. Hopefully.
Also, I can imagine that once the temperature in the intercooler rises because the water injection doesn't work anymore, the ECU would switch to a less aggressive program and reduce boost pressure to "protect" the engine.
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RC (Germany) - Rennteam Editor Porsche 991 Carrera 4 GTS Cabriolet, Porsche Macan Turbo, Ford Mustang GT500 Shelby SVT (2014), Jeep Grand Cherokee SRT (2014)
Re: New M4 GTS Announced
Oh, I meant that seriously too - I figured, if water injection is THE state of the art to increase performance, then one would not only to take care of some spare oil but also of a bottle of water. I am certainly curious as to how the system works, ie. how much quantity we are talking about and what alternative sources (like an AC) would be used.
Btw, did I already mention that I like the GTS overall, but have my doubts how long this carbon front splitter would last - perhaps it is time for BMW to introduce a front lifter ?
Oct 8, 2015 7:10:05 PM
- DaveGordon
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Re: New M4 GTS Announced
964C2:WAY:RC that is exactly correct in that the ECU will restrict the engine when the water runs out.
I'm waiting for the first "idiot" to put the water in the gas tank............
Or worse, fuel in the water tank
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73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550
Dec 21, 2015 10:56:24 PM
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Gauss
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Re: New M4 GTS Announced
Re: New M4 GTS Announced
Gauss:Ringtime 7:28
That was quick! Basically on par with 991 GT3 (but Porsche uses standing start, right?)
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16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
Re: New M4 GTS Announced
Grant:Gauss:Ringtime 7:28
That was quick! Basically on par with 991 GT3 (but Porsche uses standing start, right?)
--16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
You mean the GT3 RS, the GT3 did the lap in 7:32
I think no manufacturer does a standing start, only rolling starts, but I could be mistaken.
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Lotus 3-Eleven on order
Re: New M4 GTS Announced
Gauss: You mean the GT3 RS, the GT3 did the lap in 7:32I think no manufacturer does a standing start, only rolling starts, but I could be mistaken.
I think Porsche's official time for the 991 GT3 (not RS) is 7:25 and I believe they use standing start. 7:32 could be the Sport Auto Supertest.
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16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
Dec 22, 2015 5:11:15 AM
- Atzporsche
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Re: New M4 GTS Announced
Gauss:Ringtime 7:28
Not really impressive. This is a manufacturer test and claim.
Look at Timo Klucks run in a 991.1 Carrera S...much more impressive:
https://www.youtube.com/watch?v=OnSpVN0-wio
7:38 and this is supposed to be a standard 991.1 Carrera S. 
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RC (Germany) - Rennteam Editor Porsche 991 Carrera 4 GTS Cabriolet, Porsche Macan Turbo, Ford Mustang GT500 Shelby SVT (2014), Mini JCW (2015), Jeep Grand Cherokee SRT (2014)
Re: New M4 GTS Announced
Timo:
Ha,ha,ha: Standing start including testing the brakes two times and that fast anyway 
I might be wrong here: It does not even look like Timo actually is doing a very good lap, technically - but still a very good laptime!
Definitely two enjoyable videos to watch.
Re: New M4 GTS Announced
Kobalt:Yes it is. But he seems to be a knowledgable guy:
"The driver is Jörg Weidinger, full time chassis engineer, part time BMW Driving Experience instructor, and two time German and European Hillclimb Champion."
All test engineers are very very good drivers, many with a racing background but not all of them.
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RC (Germany) - Rennteam Editor Porsche 991 Carrera 4 GTS Cabriolet, Porsche Macan Turbo, Ford Mustang GT500 Shelby SVT (2014), Mini JCW (2015), Jeep Grand Cherokee SRT (2014)
Re: New M4 GTS Announced
Grant:Gauss: You mean the GT3 RS, the GT3 did the lap in 7:32I think no manufacturer does a standing start, only rolling starts, but I could be mistaken.
I think Porsche's official time for the 991 GT3 (not RS) is 7:25 and I believe they use standing start. 7:32 could be the Sport Auto Supertest.
--16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
Grant,
If you watch the video which RC has posted above, with Timo driving the Carrera S, you'll notice, that Porsche does a rolling start. The clock starts at T13 (55s in the video) for industry laps.
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Lotus 3-Eleven on order
Re: New M4 GTS Announced
Gauss:Grant:Gauss: You mean the GT3 RS, the GT3 did the lap in 7:32I think no manufacturer does a standing start, only rolling starts, but I could be mistaken.
I think Porsche's official time for the 991 GT3 (not RS) is 7:25 and I believe they use standing start. 7:32 could be the Sport Auto Supertest.
--16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
Grant,
If you watch the video which RC has posted above, with Timo driving the Carrera S, you'll notice, that Porsche does a rolling start. The clock starts at T13 (55s in the video) for industry laps.
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Lotus 3-Eleven on order
Interesting - I know Porsche claimed the development lap times for the 918 were all set from standing start:
"The lap time of the Porsche 918 Spyder prototype is one of the best ever recorded for a street-legal vehicle with standard tires. It is particularly impressive as it was achieved from a standing start."
http://press.porsche.com/news/release.php?id=732
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16 Cayman GT4, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi
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