Best 997GT2 intercooler
06-24-2009, 04:52 AM
#61
06-24-2009, 05:57 AM
#62
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Toby
How many here and in the forums give a damn about IAT data....etc?
ARE U ALSO U.S TUNERS HATER?????
Many many ppl in Dubai, KSA and Bahrain and Kuwait deal with many euro tuners like 9ff, Ruf..etc
They paid too much money and there cars still NOT RELIABLE and many them still not that fast.
Sorry dude but those ppl tricked by euro tuners coz euro tuners always FAST in magazines only.
There is $300k Ruf RT12 and 9ff 920hp turbo s...The RT12 wasn't that fast in street and the 9ff ( built/tuned in Germany for 2 years )..The Owner is HUGE 9FF FAN!!! and he was always talk in numbers and talking **** on U,S tuners just like u.
He claimed that the car will be FAST and still reliable for daily use..He went to Bahrain track and facing some issues.
The car now FOR SALE!!!
It is simple question...Why we can't see those high $$$ cars in street? why we r keep hearing that they r keep breaking?
Who needs expensive fast unreliable cars?...Getting modded supra will be much cheaper and much much reliable and much much much faster
The only place i saw those cars FASTER AND RELAIBLE is Magazine!!
BTW...I can't saY any thing about RS tuning coz i never saw or heard about RS car here ( Kuwait, KSA, Dubai or Bahrain )...I don't like magazine results/tests or even listen ALWAYS to the tuner
I like to heard porsche owners opinions on products that they use!! no matter which tuner they deal with!!!!
How many here and in the forums give a damn about IAT data....etc?
ARE U ALSO U.S TUNERS HATER?????
Many many ppl in Dubai, KSA and Bahrain and Kuwait deal with many euro tuners like 9ff, Ruf..etc
They paid too much money and there cars still NOT RELIABLE and many them still not that fast.
Sorry dude but those ppl tricked by euro tuners coz euro tuners always FAST in magazines only.
There is $300k Ruf RT12 and 9ff 920hp turbo s...The RT12 wasn't that fast in street and the 9ff ( built/tuned in Germany for 2 years )..The Owner is HUGE 9FF FAN!!! and he was always talk in numbers and talking **** on U,S tuners just like u.
He claimed that the car will be FAST and still reliable for daily use..He went to Bahrain track and facing some issues.
The car now FOR SALE!!!
It is simple question...Why we can't see those high $$$ cars in street? why we r keep hearing that they r keep breaking?
Who needs expensive fast unreliable cars?...Getting modded supra will be much cheaper and much much reliable and much much much faster
The only place i saw those cars FASTER AND RELAIBLE is Magazine!!
BTW...I can't saY any thing about RS tuning coz i never saw or heard about RS car here ( Kuwait, KSA, Dubai or Bahrain )...I don't like magazine results/tests or even listen ALWAYS to the tuner
I like to heard porsche owners opinions on products that they use!! no matter which tuner they deal with!!!!
You will find that I am not a US Tuner hater...... I am so far gone I hate ALL tuners
apart from RS Tuning, even Mr Ruf who RS used to work for !!I obviously don't hate any of them but after extensive ongoing research I would not spend my money with any of them. Racing success is what breeds reliable tuned engines and if the tuner crosses over to do street engines then that is what I regard as the gold standard.........
If you never heard of RS Tuning, consider that the headers on my 997 were developed for the car in the vid below, real RST 700hp with Secan intercooling:
http://www.youtube.com/watch?v=e9qbZ...eature=related
http://www.youtube.com/watch?v=g71j8WKzYVA
Last edited by TB993tt; 06-24-2009 at 06:15 AM.
06-26-2009, 11:36 AM
#63
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More testing today using Porsche tester (not Durametric). Not so good results.
27DegC ambient, my test driver gunned it up to about 160mph and the IAT got as high as 54DegC. This is way higher than the claim for the Secan. The IAT recovered very quickly so I am not despondent and will await the back to back Secan tests before drawing firm conclusions.....
27DegC ambient, my test driver gunned it up to about 160mph and the IAT got as high as 54DegC. This is way higher than the claim for the Secan. The IAT recovered very quickly so I am not despondent and will await the back to back Secan tests before drawing firm conclusions.....
06-30-2009, 02:02 PM
#65
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06-30-2009, 06:53 PM
#66
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Intercooler testing at RS looks like it is out of the window....
I have trialled an ECU tune from an unnamed company, said to be German 25M Euro/100 employee, use engine dyno......
My IATs at full loads are now high but the performance is most certainly apparent.
I got 0-300kph in 26.3s with an IAT of 48.7DegC (22 degC ambient)
There is no doubt in my mind that this intercooler is allowing this hp to be produced after watching the standard intercooler IATs, this new tune would be a heat soaking pile of junk but by a stroke of luck it seems to work rather well with my modifications...... I still can't quite believe the numbers - this is 0.2s faster than the Wimmer GT2 which claims 650PS/830NM and that was tested in the winter !
I have trialled an ECU tune from an unnamed company, said to be German 25M Euro/100 employee, use engine dyno......
My IATs at full loads are now high but the performance is most certainly apparent.
I got 0-300kph in 26.3s with an IAT of 48.7DegC (22 degC ambient)
There is no doubt in my mind that this intercooler is allowing this hp to be produced after watching the standard intercooler IATs, this new tune would be a heat soaking pile of junk but by a stroke of luck it seems to work rather well with my modifications...... I still can't quite believe the numbers - this is 0.2s faster than the Wimmer GT2 which claims 650PS/830NM and that was tested in the winter !
06-30-2009, 06:58 PM
#67
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Looking powerful, Toby.
However, I wouldn't be as concerned about your IATs as with your EGTs on an unusually aggressive software file on the GT2.
Have you monitored them?
However, I wouldn't be as concerned about your IATs as with your EGTs on an unusually aggressive software file on the GT2.
Have you monitored them?
07-01-2009, 05:11 AM
#69
Intercooler testing at RS looks like it is out of the window....
I have trialled an ECU tune from an unnamed company, said to be German 25M Euro/100 employee, use engine dyno......
My IATs at full loads are now high but the performance is most certainly apparent.
I got 0-300kph in 26.3s with an IAT of 48.7DegC (22 degC ambient)
There is no doubt in my mind that this intercooler is allowing this hp to be produced after watching the standard intercooler IATs, this new tune would be a heat soaking pile of junk but by a stroke of luck it seems to work rather well with my modifications...... I still can't quite believe the numbers - this is 0.2s faster than the Wimmer GT2 which claims 650PS/830NM and that was tested in the winter !
I have trialled an ECU tune from an unnamed company, said to be German 25M Euro/100 employee, use engine dyno......
My IATs at full loads are now high but the performance is most certainly apparent.
I got 0-300kph in 26.3s with an IAT of 48.7DegC (22 degC ambient)
There is no doubt in my mind that this intercooler is allowing this hp to be produced after watching the standard intercooler IATs, this new tune would be a heat soaking pile of junk but by a stroke of luck it seems to work rather well with my modifications...... I still can't quite believe the numbers - this is 0.2s faster than the Wimmer GT2 which claims 650PS/830NM and that was tested in the winter !
Any 100-200 ran?
07-01-2009, 08:51 AM
#71
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This is an "interesting" ECU tune, the mid range torque feels around 750NM but it then feels quite a flat torque curve meaning power builds steeply all the way to the limiter. I observed 1.3bar from 5000rpm to the limiter
This relatively low peak torque means the clutch is not slipping and I really feel that I prefer it to the 800NM slug which I'm not sure suits the set up of the GT2.....
Remember the IAT numbers I was getting with stock intercoolers and stock mapping ? there was 62 degC IAT in 23 DegC day at just 170mph.
Well this new mapping would send the IATs off the scale with standard intercoolers - it is these intercoolers which are delivering the real power, no question about it, the IAT was 48.7degc at 302kph (22degC ambient) after 23s of full load, seems high but with the expansion manifold cooling the combustion air further they are making real hp......
This is making me think further about some of the claimed hp numbers and what they really are once they are on the road ? It is a question of how do you measure the hp numbers, even on an engine dyno ? the iAT is so critical and for correct hp measurement the IAT should be simulated to what is seen on the road at (DIN 20DegC ambient) at near maximum speed.......
In answer to your EGT question, no I didn't monitor (my Durametric only seems to want to show iAT and speed for some reason !) but am I not right in saying that the ECU would detect approaching high EGT temperatures and back off timing/boost just as it would for IAT ?
In other words the engine is fully protected from too high EGTs by the Motronic ?
BTW you can see from the boost levels (if the dash gauge is right ?) that this is not an aggressive tune - I am convinced that other tunes are sufferning from too high IATs - veryt pertinent to this thread ?
07-01-2009, 09:14 AM
#72
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Toby there seems to be a bit of "magic" in 4th gear as the g's are higher than in 3rd. The run time in 4th is also unusually short compared to the other gears. Unless there is some kind of overboost phenomenon or nitrous shot, I have to wonder if there would be a data error. Did you feel anything during the run?
07-01-2009, 09:24 AM
#73
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Gene
That bit you highlighted is 6th gear, just changed from 5th to 6th checkout the speed ~260kph...
I don't remember feeling anything, but you know these illegal banzai runs, one is concentrating on lots of things.....
That bit you highlighted is 6th gear, just changed from 5th to 6th checkout the speed ~260kph...
I don't remember feeling anything, but you know these illegal banzai runs, one is concentrating on lots of things.....
07-01-2009, 09:35 AM
#74
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I have just noticed there is a red small square in the "graph map" bottom left of the Driftbox screen right where the G drops at 16s....... I have no idea what is it ? I'll try and get a screen shot but it is on my laptop..
07-01-2009, 09:45 AM
#75
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the g's should not climb beyond the preceding gear. The time in gear looks to be just 1.5 seconds which is way to short - that is 1st or 2nd gear duration times. The accel g curve has to trickle downward in each successive gear, and each gear run time will always be longer than the preceding gear for example:
