Over 500 to the wheels is insane power from a flash! Congrats and keep the mods going.

 

I have another dyno appointment booked for Wed AM. I will triple check that all the settings on the Mustang AWD 500 dyno are correct.

The settings we will use are as follows:

1) SAE corrected
2) vehicle weight 3700 lbs.
3) 15.4 hp @50mph
4) 3000 rpm calibration for each gear being tested.
5) Parasitic Multiplyer set at 1.0 (for Mustang Dyno)

This should yield us a very accurate HP/TQ accessment on my car with the GIAC flash. I'll keep you posted..

 

crazy gains!!! can't wait for my Turbo to come...

Alan

 

does flashing the car void porsche warranty?

 

Would be critical to see the baseline comparison due to the fact that Porsche often underrated their power.

 

That's interesting about the bits of metal in the oil.
I thought that the improved tolerances of machining tools and manufacturing technology today had that all but eliminated shavings (flashing) and that's why the mfr's would allow the first oil change to be 5k or 10k right out of the factory.

 

There is of course some suspicion in my mind that the metal detritus is related to his aggressive break-in procedures. Has anyone else changed the oil yet and checked for similar residues?

 

Yep, twice in 6K. I haven't found anything as of yet.

 

Let me see if I have this straight: The 997tt makes 480 at the flywheel or about 390 at the wheels. With just a flash you are now making 584.

So, I am supposed to believe that you gained nearly 200 whp from a flash?

Please correct me if I am wrong, but the above defies all physics and logic.

 

Don't you just love dyno racing?

 

Just got back in from the dyno shop. We were able to get in a total of 15 SAE corrected pulls. I must say, this is a rather interesting vehicle to say the least. If you simply make a couple of pulls you will NEVER see an accurate representation of what the car can do on a given day. It takes many many runs and the car gets stronger by several HP/TQ on each pull as the maps change.

Today we brought with us a digital weather meter to help us measure/compare the test conditions for all future dyno days. This device measures temperature, humidity, barometric pressure along with an atomic clock. We logged the data for each run.

The first 7 pulls were all 4'th gear pulls. Pulls 8 through 12 were done in 5'th gear. We finished day with pull 13 through 15 all done in 4'th gear. RPM calibration @3000 rpm was done each time we changed to a different gear.


These were the two best 4'th gear pulls:

the air/fuel curve avg was 11.6 through top of the band.

(pull #13) 447.7 HP @6000 rpm 468.8 TQ @3500 rpm
(pull #15) 445.2 HP @6250 rpm 476.8 TQ @3500 rpm

This time the Mustang dyno was calibrated with the parasitic multiplyer set to 1.0 instead of the 2.2 value that was inadvertantly left in place when the shop was testing a previous car. That value was responsible for inflating my previous numbers to a significant degree.

The weather conditions on our tester showed the following for these two runs: temp - 86 degrees F, 16% humidity, barometer 30.41

We checked the Mustang SAE correction factor and it's funny because the factor was toggling between .998 and 1.000 - basically no correction applied.

The 5'th gears pulls were problematic. The pulls were fine until about 5600 rpm and at that time the air/fuel graphs showed a massive amount of fuel being added and timing was surely being pulled because the car was not making top end power in 5'th. The air fuel curve was steady at 11.6 and then suddenly went right off the chart (below 10.8) when the fuel was being added. As the rpms increased the computer was slightly reducing the amount fuel added (11.0) as the rpm band neared redline but the timing was still being retarded so there was little power to be made. All 5 of the 5'th gears pulls were identical. We recalibrated & went back to 4'th gear and things went back to normal.

Could the extreme dryness, 16% humidity today, be affecting the 5'th gear pulls? Anybody have any ideas??

 

I would bet that the cooling was not sufficient. This is a real problem with these cars as the EGTs go up the car will pull many things at once in order to save the life of the turbo. What was the cooling setup? The TQ is about on for the flash the HP is a little down.

 

A 65 hp increase from a flash? That sounds a little more believable. Congrats....I feel better now, since my car required nearly 30K in upgrades to get 220 more horseys.

Your car must be an absolutely fantastic DD.

 

Great run...

 

We used 2 fans up front and 2 (double stack) squirel fans for intercooler & under the rear of the car duty. Same setup that we used for the first set of pulls a few weeks ago.

To check the exhaust temps on each pull we used a laser temp gun to measure the temps of the turbo housings and flanges. When the temps stabilized to around 500 degrees on the various parts of the housing and flanges we ran the next pull. Was about about 10-15 min in between pulls. I wish there was a way to measure the actual exhaust temp when doing a run because right after each run we measured about 880+ degrees F on the turbo housings & flanges.

What internal exhaust temps would it take before the computer would pull timing & dump the fuel to keep things cool??