Highest hp bolt on 997 NA?
#61
10-20-2009, 04:42 PM
Here is what they claim in the booklet when set-up properly:
+/-
0-60 1/100 sec
60-0 2 feet
1/4 mile ET 1/10 sec
1/4 mile speed 1 mph
horsepower 3 hp
instant G's 2/100 G
Cont. G's 2/100 G
Stacy
+/-
0-60 1/100 sec
60-0 2 feet
1/4 mile ET 1/10 sec
1/4 mile speed 1 mph
horsepower 3 hp
instant G's 2/100 G
Cont. G's 2/100 G
Stacy
#63
10-20-2009, 04:50 PM
With old one that I have here which is like the one I bought to circulate around the USA.....NO....BUT the new ones (Gtech Pro SS/RR) are a bit more complicated to use.I have 2 old ones and bought 2 new ones WHICH are in the hands of 1999porsche911 and keninirvine both say they will be a bit more to get used too.The ones also offer a bit more data as well though!
One of my tests will be the old G-tech in the same car with a new G-tech.....and then we will compare the two!
Stacy
Old one VS New one
One of my tests will be the old G-tech in the same car with a new G-tech.....and then we will compare the two!
Stacy
Old one VS New one
Last edited by justatoy; 10-20-2009 at 04:54 PM.
#64
10-20-2009, 04:55 PM
Join Date: Apr 2008
Location: Colorado
Posts: 5,214
Rep Power: 396 
Funny you say this....but back in the early years I used my Gtech on my cars.I use to talk about it quite often at the engine shop...WELL...one guy called BS!
So test and tune was the next friday and he took it to the track.
3 times he ran it down the 1/4 mile and 3 times the results came back WITH a timeslip.
The next day he brought it back to me with the time slips and apologized........the Gtech was within' a 1/10 of a second for time and +/-1 mile per hour for speed....REALLY amazing!
Stacy
So test and tune was the next friday and he took it to the track.
3 times he ran it down the 1/4 mile and 3 times the results came back WITH a timeslip.
The next day he brought it back to me with the time slips and apologized........the Gtech was within' a 1/10 of a second for time and +/-1 mile per hour for speed....REALLY amazing!
Stacy
LOL, yup. unbelievably accurate. you would not think it could be, but it is
#65
10-20-2009, 05:36 PM
I hope this works! I am trying to put up a dynolicious graph showing a 0-60 run with Gs and HP!
The road was slippery, but it seemed to work well. I did a 0-60 in 4.5 sec...
Oh, and I think that the HP peaked at 322. I have a 997.2S. I dunno if this is accurate, because it judges HP over 1st and 2nd gear.
The road was slippery, but it seemed to work well. I did a 0-60 in 4.5 sec...
Oh, and I think that the HP peaked at 322. I have a 997.2S. I dunno if this is accurate, because it judges HP over 1st and 2nd gear.
Last edited by JohnM; 10-20-2009 at 05:42 PM.
#66
10-20-2009, 05:51 PM
I hope this works! I am trying to put up a dynolicious graph showing a 0-60 run with Gs and HP!
The road was slippery, but it seemed to work well. I did a 0-60 in 4.5 sec...
Oh, and I think that the HP peaked at 322. I have a 997.2S. I dunno if this is accurate, because it judges HP over 1st and 2nd gear.
The road was slippery, but it seemed to work well. I did a 0-60 in 4.5 sec...
Oh, and I think that the HP peaked at 322. I have a 997.2S. I dunno if this is accurate, because it judges HP over 1st and 2nd gear.
Usually 4th gear is used for dynos BUT because of the MPH and the potential dangers involved with such a high speed ....3rd is the most widely used!
Stacy
PS with that 322 number...it may be close since your car IS 385 crank hp(?) and 16% drivetrain loss.
I would expect that the number will decrease a bit with third gear as there will be more drag from the wind at the higher speed.
Last edited by justatoy; 10-20-2009 at 05:53 PM.
#67
10-20-2009, 06:23 PM
Registered User
Join Date: May 2007
Location: Blaine, Wa (not in Irvine anymore)
Posts: 2,481
Rep Power: 193
We need an engineer that hasn't forgotten as much as I have that might be able to provide us with an approximation of power required for overcoming aerodynamic drag at different speeds on our P-cars. With that we could take the max GTech or iPhone hp power reading (typically at around 7000 rpm in 3rd gear) and apply the percentage power loss due to drag at the corresponding speed, then add that to the GTech/iPhone hp reading to arrive at a reasonable approximation of the RWHP.
This is getting to be more fun all the time.
This is getting to be more fun all the time.
#69
10-20-2009, 06:34 PM
Registered User
Join Date: May 2007
Location: Blaine, Wa (not in Irvine anymore)
Posts: 2,481
Rep Power: 193
You already answered it. It was a crazy person named Stacy. 
You started a thread 10 months ago that has had almost 31000 views, and now I believe you're trying to out-do that one with this new one. Pretty soon you're going to want your name put on the Hollywood walk of fame.
You started a thread 10 months ago that has had almost 31000 views, and now I believe you're trying to out-do that one with this new one. Pretty soon you're going to want your name put on the Hollywood walk of fame.
#70
10-20-2009, 06:38 PM
You already answered it. It was a crazy person named Stacy.
You started a thread 10 months ago that has had almost 31000 views, and now I believe you're trying to out-do that one with this new one. Pretty soon you're going to want your name put on the Hollywood walk of fame.
You started a thread 10 months ago that has had almost 31000 views, and now I believe you're trying to out-do that one with this new one. Pretty soon you're going to want your name put on the Hollywood walk of fame.
NEW thread started!
https://www.6speedonline.com/forums/...ml#post2587336
Stacy
Last edited by justatoy; 10-20-2009 at 07:34 PM.
#71
10-20-2009, 07:14 PM
Registered User
Join Date: Aug 2004
Location: Chicagoland
Posts: 2,134
Rep Power: 122
In addition to aerodynamic drag, you have car movement from side to side and up and down, You also have tire to road resistance which is a huge variable and effected by tire pressure, temperature of tire and road surface. A wet surface will provide higher numbers. You are also driving the front wheels which steals power. All these variables are not present in a 2 wheel dyno. I suspect that the "real world" power numbers from a Gtech will be at least 10% less than a dyno. The faster you go, the greater the difference.
Last edited by 1999Porsche911; 10-20-2009 at 07:17 PM.
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