Steve Theodore

Sadly, this time of year is all about rain here near Seattle. I've been learning to use my Dragy on my slowest car (a stock Lexus IS300) and have found it to be quite easy to use. But, until there is a reasonably clear day that I can take the car out without much traffic on the road, it will remain elusive.

bmw_e30

the guys at dyno spectrum wrote the cobb tune while working at cobb. they do a custom tune using the accessport and get a more refined powerband and a nice bump in power as well. they are local to me here in LA and I probably will go that route in a few months with my car

quote from them to me last week:

"Dyno Spectrum & M-Engineering are actually comprised of the old core group of Porsche engineers from COBB so we are able to give you some pretty good insight on the calibrations. We created them all from the 996 Turbo to 991.2 Turbo while at COBB along with all the 981, 718, Carrera, & GT3 maps before leaving in March of 2019.

The OTS calibrations are designed as a more one size fits all because it was designed to cover a wide spectrum. They make solid power out of the box but when tuning a particular car on a particular octane there is generally always a bit of fine tuning to be had and power that can be gained. That is why the ability to custom tune is also available with the AP. If you are looking for a calibration that is really dialed in for your particular 997.1 Turbo, we can keep tabs on everything via datalogging and dial in the tune for ACN91 fuel to achieve the most power while mitigating knock and ignition corrections."

Steve Theodore

Thanks buddy! Since I live so close to the wizards at Dundon Motorsports I think all I'm going to do is:

1. Measure baseline performance
2. Apply OTS GT2 tune
3. Measure tuned OTS performance
4. Get custom tune from Dundon
5. Measure tuned Dundon performance

I have a feeling that's as fast as I'll need/want my GT2 to be...at least for quite some time.

mchrono

I think I'm in the same boat as you. Thought about it, but ultimately decided that with so few of our cars in existence, it does not make much sense to go crazy with the mods above and beyond a good quality proven tune, as a decent bit of power was apparently left on the table by the factory in the'08-'09 cars.

TB993tt

The only material difference from the '08/'09 GT2s and the GT2RS is the intercoolers so if you fit 100 cell cats and GT2RS intercoolers you should be able to get up to the 620PS/700NM of the GT2RS.

What messes it up for most tunes is that they go for more torque lower in the rev range which means more boost and more hot air which ultimately overheats the system and makes 620PS not possible, if you stick to 700NM max you will get near the 620PS level

Steve Theodore

These cars are rare enough that I agree it's not really worth monkeying around too much. That and I really do enjoy the car as it sits so just feel a little bit of a boost would be enough.

Thanks, some very good points there for sure. It is my goal to enhance it to roughly GT2 RS factory levels so that sounds like a good strategy to me.