911.

About 2x the cost vs a tailored mapping with Cobb.

The costs is one thing to consider, but more importantly for me, day to day drivebility and how the car helps make you a faster driver aka puts the power down is much more valuable.

PTS-BRG

Reached out to Mitch. He has my original "beast" tune, the one he worked on for hours on the dyno in NJ. He says he knows the problem, so he has my protune in hand to tweak.

Let's see how it compares to the others when it can finally make a clean 3-4th shift without having the boost turned down..

Nabil_3.0

@PTS-BRG what bolt ons does your car have?

spdracerut

Full Kline exhaust system of headers, cats, mufflers I believe

Cheshi143

Nice, the number to shoot for is under 7 second 60-130 on CA 91 pump gas.

Nabil_3.0

Does anyone know if headers give you power?

fsmich

That's not fair, 3D has M660 turbo's. It's not a GTS. The pro-tune beats the APR 60-130 in 91 mode. The APR beats the pro-tune in the 1/4 on 91. That's why I did the Dragy's

spdracerut

Yes, lots of info on headers.

Nabil_3.0

Thank you im trying to figure out what my next upgrade should be....... Ill search

spdracerut

​​​​​​Yup! Let's just say that me, 4point0, and PTS-BRG have debated this to death. Hahahaha. But pretty much all the highest power 991.2s have headers. It's easy to see why when you look at the stock headers compared to aftermarket.

​​

Nabil_3.0

Thank you ! would you say headers over intercoolers ??? LOL just curious of bang for buck

Ksdaoski

Klines here

911CSC

I understand and agree but people are comparing a flash tune to the Cobb unit with pro-tune and even with dyno time. Spending $1,700 compared to almost $3,000 is a big difference no matter what.

And to be clear I expect a lot more from a pro-tune/dyno time tune than just 2 or 3 hp difference. And let's not talk about all the pro tuners that know it all and can do no wrong and those that play with the numbers just to make you feel good. There's a whole of them out there

I've seen the APR video sometime ago on how they tune the cars with over 40 sensors, dyno runs, track tested and real street test but I have yet to see anything from Cobb. To me that's more important than just throwing out a bunch of tunes and telling you just to try them out and see which one feels better to you.

Please lets compare apples to apples and start with real cost

911CSC

Here is a video from APR , here you can see all the sensors that are used during testing

PTS-BRG

Ok, let's get into this a little.

I have Kline cats, Kline Exhaust, Kline Headers. ALL headers will give you some additional power somewhere, different manufacturers headers produce power in slightly different areas.
If you want to know which Header to buy, search on these forums and get ready for a long read and debate. In the end, I chose Kline 2 years ago and would choose them again today.
I also have HRE lightweight wheels and DSC Module, but they are offset by a 50lb Subwoofer and a 215lb driver.

Back to the APR vs Cobb Tune debate..

I would love to compare Cobb's original Stage 2 OTS Map with APR's current stage 2 OTS Map. That to me would be the most fair apples to apples comparison.
The reason why all of these more recent Pro Tunes aren't "impressive" is because they are all based on the current OTS maps which have been castrated by Cobb to solve the flutter issue.
What Pro Tuners dont tell you is that your Pro Tune starts as a Stage 1 or Stage 2 OTS map. They don't reinvent the wheel and start from scratch, they start with an OTS map and tweak it.
So, how does a Current Pro Tune compete with an all out APR OTS tune? Very close because todays Cobb OTS is intentionally restricted and the APR tune is not.
Pro Tuning will improve on the base OTS map, but who knows what tables Cobb changed and how to reverse them? So, the improved "castrated" Pro tune should be a wee bit better than APRs OTS map.

HOWEVER... I still have my original Pro Tune based on the original aggressive Cobb OTS maps. If Mitch has indeed figured out the flutter problem and has not lowered the boost, then we will have a better idea of what the Cobb Pro Tune CAN potentially do, rather than what it can currently do. Mitch just sent me the revised/corrected tune. I will try and find some time tomorrow to let it rip and do some Dragy runs. I will post back and we can see what the results are and If the flutter is gone..