Player0

Don't see many superflow 997.1 GT3 graphs out there so it's a little hard to compare. But here's the baseline on mine FWIW. Now for many weeks of clutch upgrades, coolant welding, LSD installs, etc.

This is with a sharkwerks tune and center muffler delete so not entirely stock.

Auto_Werks 3.6

They always dyno lower than I would think they should based on the factory rating, but at this point just above mid 300s seems pretty normal. I guess it's around 15% driveline loss, which again I would have thought a little high and expected closer to 10%. Thanks for sharing. I want to baseline my stock .2 on the dyno where I've been tuning my 944 turbo to calibrate the 944 numbers to an actual car... but the guy's situation is pretty awful for loading a car, and I'm not sure GT3 ground clearance can actually clear his lift arrangement.

Player0

Luckily for me I had carefully removed (ripped off on a lovely Boston road crater) the front lip in the fall so I assume it was easier to load up. I'm told that this result is strong on that dyno but I don't have a reference for it yet. I did notice some slippage on the clutch but I don't think it's showing on the dyno here. We believe the pressure plate has some broken springs which is also making it harder to shift. 4.0 clutch going in anyway.

Going to do a ton of service, injectors, sensors, coil packs, so I'm hoping any losses it might have will be corrected by that. But it is a relatively high mileage motor so its going to leak a bit of compression.

Steve Theodore

If I recall correctly 997.1 GT3s (unclear of mileage) make about 350-355 whp on Dundon's dyno...so it would seem you're right there.

bmwtye

The car also has evoms headers and high flow cats, which is why it would be nice to see if they have dyno'd any gt car before and we could at least get an idea of potential variance

Jake951

Here's a dyno plot for my '07 GT3. It has a Softronic tune but everything else is stock., The mileage on mine is also about 65k.

bmwtye

[quote=Jake951]Here's a dyno plot for my '07 GT3. It has a Softronic tune but everything else is stock., The mileage on mine is also about 65k.

what was temps during the dyno

Jake951

It was cool. I would guess the ambient temperature was around 40F to 50F. It was done last November on a chilly day and the dyno chamber opens to the outdoors.