GIAC 991.2 Carrera 4S Tune Review
#16
Bone stock 2017 Carrera S gets 11.4 seconds @ 123 MPH. Here are the results of instrumented test:
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
This C&D test says the 4S goes 11.5 @ 121 in the quarter stock: http://www.caranddriver.com/reviews/...4s-test-review
Most people have difficulty matching C&D's times. While I think the trap speed is lower than expected, the 11.1 is a full 0.4 second improvement in E.T. This suggests an increase of at least 40 HP.
Obviously it would have been preferable to have before and after runs on the same day at the same track for the most accurate comparison. Nonetheless, a repeatable 11.1 E.T. is impressive. I would say that is not a miniscule difference and everyone has their own level of risk tolerance.
#17
Ira, there are too many variables in ET.. The same car can easily be 0.5 secs slower/faster on a colder/hotter day, diff tires/track, etc.. While trap will likely be similar.
Thus the trap speed is always the preferred indicator of actual hp applied.
Thus the trap speed is always the preferred indicator of actual hp applied.
#18
Bone stock 2017 Carrera S gets 11.4 seconds @ 123 MPH. Here are the results of instrumented test:
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
The car ran a consistent 11.1 with my novice hands at the helm and with the wheels spinning during launch control at the start, I feel like the car could break into the 10’s(93 pump gas) on a cleaner surface.
#20
Generally, I agree. However, it is extremely rare to see a novice beat or even equal E.T.s reported by C&D. Thus, in this case, I am willing to accept that the mod did indeed knock about 0.4 seconds off of a very aggressive E.T.
There are many possible explanations for the lower than expected trap speed. For example, the ECU could have been forced to pull timing at the top end in higher gears due to detonation. Perhaps with better gas or less aggressive tuning at the top end, the trap speed would be even higher.
#21
EXACTLY!! And the fact that it was OP's first time at the drag strip is big as well. Anyone commenting in this thread saying that the gains are negligible seriously does not understand real world circumstances!!
#22
This C&D test says the 4S goes 11.5 @ 121 in the quarter stock: http://www.caranddriver.com/reviews/...4s-test-review
Most people have difficulty matching C&D's times. While I think the trap speed is lower than expected, the 11.1 is a full 0.4 second improvement in E.T. This suggests an increase of at least 40 HP.
Obviously it would have been preferable to have before and after runs on the same day at the same track for the most accurate comparison. Nonetheless, a repeatable 11.1 E.T. is impressive. I would say that is not a miniscule difference and everyone has their own level of risk tolerance.
Most people have difficulty matching C&D's times. While I think the trap speed is lower than expected, the 11.1 is a full 0.4 second improvement in E.T. This suggests an increase of at least 40 HP.
Obviously it would have been preferable to have before and after runs on the same day at the same track for the most accurate comparison. Nonetheless, a repeatable 11.1 E.T. is impressive. I would say that is not a miniscule difference and everyone has their own level of risk tolerance.
That inflates their trap speeds.
The huge ET gain shows a huge torque gain down low. As it so happens, this correlates with the released 991.2 GIAC Carrera tune dyno of +100 lb-t at 3000 rpm.
#23
Bone stock 2017 Carrera S gets 11.4 seconds @ 123 MPH. Here are the results of instrumented test:
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
http://www.caranddriver.com/reviews/...ic-test-review
Carrera 4S is supposed to be 0.1-0.2s faster (11.2 second q-mile) depending on track temperature. GIAC tune seems to be making a miniscule difference at the risk of voiding warranty.
#24
#26
#27
Yep PDK SC. I'm a bit confused about all the comments of real world conditions and being a first time and everything, especially if as Mike says the timer starts when you cross the line. LC seems more like and amusement park ride than anything else to me. I didn't really do anything.
I'll look for the slip, I'm sure it's in a box somewhere.
#28
Hmm are you sure?
Yep PDK SC. I'm a bit confused about all the comments of real world conditions and being a first time and everything, especially if as Mike says the timer starts when you cross the line. LC seems more like and amusement park ride than anything else to me. I didn't really do anything.
I'll look for the slip, I'm sure it's in a box somewhere.
Yep PDK SC. I'm a bit confused about all the comments of real world conditions and being a first time and everything, especially if as Mike says the timer starts when you cross the line. LC seems more like and amusement park ride than anything else to me. I didn't really do anything.
I'll look for the slip, I'm sure it's in a box somewhere.
it is true after the light turns green you can sit there for as long as you want and the timer won't start until you cross the starting line. Reaction time is only for head to head races.
#29
It was head to head as in there was another car racing next to me if that's what you mean.
#30