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      01-12-2019, 11:12 AM   #67
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Originally Posted by mwlmd View Post
COBB stage 2. Self install takes 15 mins.
Cobb has merit. I hate that the DME has to be cracked open before AccessPort will work. Great power gains though.
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      01-12-2019, 11:16 AM   #68
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COBB stage 2. Self install takes 15 mins.
Cobb has merit. I hate that the DME has to be cracked open before AccessPort will work. Great power gains though.
If by cracked open you mean plugging into the OBD port and flashing the ECU then yes. However it stores the stock file and can be returned to stock in 15 mins. It really is the best of both worlds. True ECU tune with end user reversibility. And no need to open the engine compartment.

Added benefit is that many pro tuners offer files custom made for your specific mod setup. These can be emailed to you and uploaded and installed at home.
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      01-12-2019, 11:18 AM   #69
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Originally Posted by mwlmd View Post
If by cracked open you mean plugging into the OBD port and flashing the ECU then yes. However it stores the stock file and can be returned to stock in 15 mins. It really is the best of both worlds. True ECU tune with end user reversibility. And no need to open the engine compartment.

Added benefit is that many pro tuners offer files custom made for your specific mod setup. These can be emailed to you and uploaded and installed at home.
Cobb told me they need the DME/ECM to cut it open and physically alter a circuit to allow access through the aldl OBD2 port.
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      01-12-2019, 11:24 AM   #70
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Originally Posted by mwlmd View Post
If by cracked open you mean plugging into the OBD port and flashing the ECU then yes. However it stores the stock file and can be returned to stock in 15 mins. It really is the best of both worlds. True ECU tune with end user reversibility. And no need to open the engine compartment.

Added benefit is that many pro tuners offer files custom made for your specific mod setup. These can be emailed to you and uploaded and installed at home.
Cobb told me they need the DME/ECM to cut it open and physically alter a circuit to allow access through the aldl OBD2 port.
Interesting. That is new. Porsche must have locked the ECU on the newest 991.2 cars. That sucks!

I looked at the process on COBBs website. If I had a brand new 991.2 TTS I would definitely pass until they refine things. There will be a software way around the lock at some point.
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      01-13-2019, 01:14 AM   #71
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Interesting. That is new. Porsche must have locked the ECU on the newest 991.2 cars. That sucks!

I looked at the process on COBBs website. If I had a brand new 991.2 TTS I would definitely pass until they refine things. There will be a software way around the lock at some point.
This is good information. Many newer cars are needing the DME boxes cracked open - and like ONfire - I don't like that idea. I have used COBB quite extensively before and they have offered some cool flexibility - like 12 injector support now for some V6 applications - but I would never use their off the shelf tunes. E-tune by a pro - it is worth every penny. Not being able to easily tune through the OBD port is a big issue for me - I will have to research this more fully now. I am noticing more and more manufacturers are locking their cars down now. The new ZR1 still has not been cracked.

Thanks to both of you for posting this info!
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      01-14-2019, 11:20 AM   #72
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Cobb has merit. I hate that the DME has to be cracked open before AccessPort will work. Great power gains though.
Remember its only needed to be unlocked one time, then the handheld is free to upload any custom maps. So in reality you only lose the day of shipping and return. Other than that its the same.

This is the issue with the .2's--- the dme is super protected while the .1's were freed up early into their existence. But like I said, it just needs one unlock.

I even had to unlock my GTS and now I can update based on my mods at will via the obd2.
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      01-14-2019, 12:21 PM   #73
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Remember its only needed to be unlocked one time, then the handheld is free to upload any custom maps. So in reality you only lose the day of shipping and return. Other than that its the same.

This is the issue with the .2's--- the dme is super protected while the .1's were freed up early into their existence. But like I said, it just needs one unlock.

I even had to unlock my GTS and now I can update based on my mods at will via the obd2.
Isn’t very intrusive either. My basic understanding is they open the case and probe a couple of terminals electrically to reset the loader. No soldering, etc.
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      01-14-2019, 12:59 PM   #74
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I just came out of a 997.2 TTS with a stage 2 COBB tune and exhaust. Car was stupid fast but it was too rough for me as a daily driver in the Northeast. Picked up the M5 Comp last week and the car feels HUGE compared to the 997.2 TTS, however it feels really fast as well. Love the fact that it's comfortable, roomy and a monster at the same time. If I had the funds, I would have both in my garage.
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      01-14-2019, 01:43 PM   #75
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Isn’t very intrusive either. My basic understanding is they open the case and probe a couple of terminals electrically to reset the loader. No soldering, etc.
correct, its not an wholesale excavation.
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      01-14-2019, 02:38 PM   #76
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Originally Posted by onfireX5 View Post
Isn’t very intrusive either. My basic understanding is they open the case and probe a couple of terminals electrically to reset the loader. No soldering, etc.
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correct, its not an wholesale excavation.
My concerns in the past is HOW they open the box. I'm not sure if the Porsche boxes need to be heated for the glue to open or some other method? I just don't like the idea of messing up the insides or even the case where it is obvious it was opened.

By the way - my buddy did quite an update with his 991.2 Turbo S and I will post it here.
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      01-14-2019, 03:21 PM   #77
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My concerns in the past is HOW they open the box. I'm not sure if the Porsche boxes need to be heated for the glue to open or some other method? I just don't like the idea of messing up the insides or even the case where it is obvious it was opened.

By the way - my buddy did quite an update with his 991.2 Turbo S and I will post it here.
After 100 plus tunes over the years I have had one glued box that was ruined because the tuner was not savvy enough (13 years ago). Thankfully the majority were/are obd2 but my GTS is still an unlock

My contact who is one, if not the largest Cobb dealer (for Porsche), said there is no soldering just some pin managment (whatever that means). He said the DME is silicon connected but it peels with no flex on the cover and resticks with no visual effects.
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      01-14-2019, 03:27 PM   #78
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Originally Posted by vtknight View Post
My concerns in the past is HOW they open the box. I'm not sure if the Porsche boxes need to be heated for the glue to open or some other method? I just don't like the idea of messing up the insides or even the case where it is obvious it was opened.

By the way - my buddy did quite an update with his 991.2 Turbo S and I will post it here.
Very curious about the results. The 991.2 Turbo NON S was only 0.10 and 1mph faster than the Comp stock on the same day. That was a great data point. I'm actually concerned that my Turbo S (pure stock) will only match my F90 with RC. That would be a bummer. Cobb will fix it, but I hope it's at least 0.2 quicker stock vs RC. Dang M5 is an OverAchiever.
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      01-14-2019, 03:47 PM   #79
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Originally Posted by Vic55 View Post
After 100 plus tunes over the years I have had one glued box that was ruined because the tuner was not savvy enough (13 years ago). Thankfully the majority were/are obd2 but my GTS is still an unlock

My contact who is one, if not the largest Cobb dealer (for Porsche), said there is no soldering just some pin managment (whatever that means). He said the DME is silicon connected but it peels with no flex on the cover and resticks with no visual effects.
Thanks Vic...PIN management means a physical change - which I am hoping can be put back. I am getting modding averse in my older age I guess lol. I just don't want the headache.

Quote:
Originally Posted by onfireX5 View Post
Very curious about the results. The 991.2 Turbo NON S was only 0.10 and 1mph faster than the Comp stock on the same day. That was a great data point. I'm actually concerned that my Turbo S (pure stock) will only match my F90 with RC. That would be a bummer. Cobb will fix it, but I hope it's at least 0.2 quicker stock vs RC. Dang M5 is an OverAchiever.
I will say that on my other track - not same day being fair but same time of season - a Turbo S ran a 10-6 and 10.7 to my 10.9. Now I have the 1.7x tire 60'. So in theory I am at least a 10.8. So 1-2 tenths from the CP. MPH was 131-133 MPH for the Turbo S to my 129.5. I would say the tuned M5 will easily beat stock Turbo S performance. That said - tune on the Porsches are into the low low 10's and even high 9's at 135-137 MPH. My buddy is stock housing but with the GT2RS turbos. He is hoping for a 9.6-9.7 at 143ish MPH.

EDIT: Oh and congrats General.

He's about to race Brooks from Dragtimes in his 720S...

Here's the prelim video...
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      01-14-2019, 04:13 PM   #80
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Thanks Vic...PIN management means a physical change - which I am hoping can be put back. I am getting modding averse in my older age I guess lol. I just don't want the headache.



I will say that on my other track - not same day being fair but same time of season - a Turbo S ran a 10-6 and 10.7 to my 10.9. Now I have the 1.7x tire 60'. So in theory I am at least a 10.8. So 1-2 tenths from the CP. MPH was 131-133 MPH for the Turbo S to my 129.5. I would say the tuned M5 will easily beat stock Turbo S performance. That said - tune on the Porsches are into the low low 10's and even high 9's at 135-137 MPH. My buddy is stock housing but with the GT2RS turbos. He is hoping for a 9.6-9.7 at 143ish MPH.

EDIT: Oh and congrats General.

He's about to race Brooks from Dragtimes in his 720S...

Here's the prelim video...
He will have his hands full with the 720S unless his tune is perfect. Too many Mega Modded 911's running around with spotty tunes. Some are good and set on kill though. Will be interesting. Thanks for the data point.
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      01-14-2019, 04:25 PM   #81
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He will have his hands full with the 720S unless his tune is perfect. Too many Mega Modded 911's running around with spotty tunes. Some are good and set on kill though. Will be interesting. Thanks for the data point.
ESMotors is pretty solid. They are the 8 second Porsche Tuner. World record holders to my understanding. If this works as intended it will be a big improvement over these times...

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      01-14-2019, 04:29 PM   #82
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Bigger build run...https://www.automobilemag.com/news/w...-quarter-mile/
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      01-14-2019, 07:42 PM   #83
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Quote:
Originally Posted by onfireX5 View Post
Quote:
Originally Posted by vtknight View Post
My concerns in the past is HOW they open the box. I'm not sure if the Porsche boxes need to be heated for the glue to open or some other method? I just don't like the idea of messing up the insides or even the case where it is obvious it was opened.

By the way - my buddy did quite an update with his 991.2 Turbo S and I will post it here.
Very curious about the results. The 991.2 Turbo NON S was only 0.10 and 1mph faster than the Comp stock on the same day. That was a great data point. I'm actually concerned that my Turbo S (pure stock) will only match my F90 with RC. That would be a bummer. Cobb will fix it, but I hope it's at least 0.2 quicker stock vs RC. Dang M5 is an OverAchiever.
Unbelievable M5 numbers!
overachiever indeed
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      01-15-2019, 11:01 AM   #84
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Quote:
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Quote:
Originally Posted by vtknight View Post
My concerns in the past is HOW they open the box. I'm not sure if the Porsche boxes need to be heated for the glue to open or some other method? I just don't like the idea of messing up the insides or even the case where it is obvious it was opened.

By the way - my buddy did quite an update with his 991.2 Turbo S and I will post it here.
Very curious about the results. The 991.2 Turbo NON S was only 0.10 and 1mph faster than the Comp stock on the same day. That was a great data point. I'm actually concerned that my Turbo S (pure stock) will only match my F90 with RC. That would be a bummer. Cobb will fix it, but I hope it's at least 0.2 quicker stock vs RC. Dang M5 is an OverAchiever.
Nope my stock 991.2 did 10.49@131mph . Haven't seen any tune only M5's match that on pump / street tires lol. With just exhaust and no tune was down to 10.29@134 mph with a legit 2.4 second 0-60 , 1.5 60ft all day long on an unprepared surface . Stock vs stock it isn't even close . If you tune a 130 k car why not tune a 180 k car ????
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      01-15-2019, 11:03 AM   #85
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Nope my stock 991.2 did 10.49@131mph . Haven't seen any tune only M5's match that on pump / street tires lol. With just exhaust and no tune was down to 10.29@134 mph with a legit 2.4 second 0-60 , 1.5 60ft all day long on an unprepared surface . Stock vs stock it isn't even close . If you tune a 130 k car why not tune a 180 k car ????
That makes me feel better. Which exhaust ? Time slip ?
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      01-15-2019, 01:31 PM   #86
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Nope my stock 991.2 did 10.49@131mph . Haven't seen any tune only M5's match that on pump / street tires lol. With just exhaust and no tune was down to 10.29@134 mph with a legit 2.4 second 0-60 , 1.5 60ft all day long on an unprepared surface . Stock vs stock it isn't even close . If you tune a 130 k car why not tune a 180 k car ????
I'm open minded - but it's important to note I believe your 10.49 ET claim is the quickest fully stock Turbo S in the world (at least in the wild). I see 10.6-10.7 on average. Your MPH is right on - but I would think with that ET and the 60' you say you are getting stock, you would have lost some MPH.

The next part is a definite no. 10.2 at 134 MPH without a tune - just exhaust only - is not possible as most tune and exhaust 991.2 Turbo S's are only hitting slightly better that that - and 10.2's on average - down to the MPH and 60'. Is your DA something crazy like -3000 ft?

Please note I am getting set to pick up a 991.2 Turbo S - so I would love this to be true.


Last edited by vtknight; 01-15-2019 at 01:41 PM..
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      01-15-2019, 01:56 PM   #87
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I'm open minded - but it's important to note I believe your 10.49 ET claim is the quickest fully stock Turbo S in the world (at least in the wild). I see 10.6-10.7 on average. Your MPH is right on - but I would think with that ET and the 60' you say you are getting stock, you would have lost some MPH.

The next part is a definite no. 10.2 at 134 MPH without a tune - just exhaust only - is not possible as most tune and exhaust 991.2 Turbo S's are only hitting slightly better that that - and 10.2's on average - down to the MPH and 60'. Is your DA something crazy like -3000 ft?

Please note I am getting set to pick up a 991.2 Turbo S - so I would love this to be true.

I've been to that track years ago. Was Moroso then. Sea level and a great facility. Obviously prep and DA matters, but when you start at sea level.....

I'm still concerned that same day, same place my RC F90 will be too close to my TTS. I hope not. I'd be impressed if a stock TTS is 0.25 quicker and 2mph faster. I already have a Kline exhaust in my garage....but I'm hoping Cobb cracks the boot loader in 6 months. I'm getting lazy and the DME removal will take me 2 hours out, 2 back in......
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      01-15-2019, 02:59 PM   #88
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I've been to that track years ago. Was Moroso then. Sea level and a great facility. Obviously prep and DA matters, but when you start at sea level.....

I'm still concerned that same day, same place my RC F90 will be too close to my TTS. I hope not. I'd be impressed if a stock TTS is 0.25 quicker and 2mph faster. I already have a Kline exhaust in my garage....but I'm hoping Cobb cracks the boot loader in 6 months. I'm getting lazy and the DME removal will take me 2 hours out, 2 back in......
That is exactly why I posted this particular example. It really represents the best example - due to its natural DA/elevation. I think the F90 platform will be very impressive with basic tune and bolt ons. It will be close to an average run in a stock Turbo S.

That said - a 10.18 at 134 with tune and bolt ons for the 991.2 Turbo S is super solid. And it will be consistent. In your air/DA/elevation - I'm guessing the same setup will run high 10.3's(10.4)- low 10.5's at 131ish MPH during your summers. Slightly better in your cool weather. That is pretty solid as it will run those times over and over again with very little strain on the car - and still behave exactly like stock.

That is what I am convincing myself of anyway lol.
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