[CH01]

Going to have the Carbahn tune (actual unlock and tune and not the piggyback) done at a local dealer who is one of their partners. Also, want to have a high-flow downpipe installed so the tune can be optimized. Based on what I’ve seen here, AA seems to be a good choice. However, I thought I’d confirm with anyone who has experience, is a good choice or are there others I should consider?

Also, I have the MPE exhaust and wouldn’t mind a bit more sound but don’t want it to be obnoxious. Will a high-flow downpipe and this exhaust be extremely loud?

[BG42]

AA is top notch and from experience 100% stand behind their products.

[VegasG42]

You are sending your DME to FEMTO ?

AA really is the best overall high flow catted downpipe for us. And most unlikely to throw a code.

Your car will be a bit louder. The major issue our cars have with the downpipe and cattback combo is drone. So that might be an issue

[CH01]

Originally Posted by VegasG42

You are sending your DME to FEMTO ?

AA really is the best overall high flow catted downpipe for us. And most unlikely to throw a code.

Your car will be a bit louder. The major issue our cars have with the downpipe and cattback combo is drone. So that might be an issue

Correct, well technically the dealer is sending the DME to FEMTO, then once back, installing the Carbhan tune.

[M_Power Rob]

The word "highflow" can be abused/misused. If you want true highflow, look for a downpipe that is 200 cell (I believe the AA that guarantees no CEL is 400 cell).

I dont know of any 200 cell downpipe that wont throw a code. If being custom tuned, the tuner can shut the CEL off.

[Ruebarb]

I have that exact combo and now that I also did XHP, even sounds more amazing.

Would do it again. With flap closed (OEM control) in comfort, quiet on highway like stock(wife mode).

AA DP
MPE Exhaust
BMS Intake
Exhaust Flap 100%

Cold Start - Comfort Mode

Sport Mode - Windows Down & Up

[CH01]

Originally Posted by Ruebarb

I have that exact combo and now that I also did XHP, even sounds more amazing.

Would do it again. With flap closed (OEM control) in comfort, quiet on highway like stock(wife mode).

AA DP
MPE Exhasut
BMS Intake
Exhaust Flap 100%

Cold Start - Comfort Mode

Sport Mode - Windows Down & Up

Thank you, the videos were helpful and it sounds great!

[mike@x-ph.com]

+1 for Active Autowerke

[CH01]

Originally Posted by mike@x-ph.com

+1 for Active Autowerke

Thank you, ordered one from you today.

[mike@x-ph.com]

Originally Posted by CH01

Thank you, ordered one from you today.

Congrats

[08-335xi]

Originally Posted by CH01

Thank you, the videos were helpful and it sounds great!

CH01,

Did you end up going forward with the unlock and tune? I may use the same dealer in Cincy to flash after breakin is finished. How long did the entire process take? Are you happy with the results?

[LeggoRacing]

Following

[CH01]

Originally Posted by 08-335xi

CH01,

Did you end up going forward with the unlock and tune? I may use the same dealer in Cincy to flash after breakin is finished. How long did the entire process take? Are you happy with the results?

I did, had the dealer handle the whole process with unlock, Carbahn tune and install the AA downpipe. Car was with them for just under two weeks and all went well. I haven’t had the car tested on a dyno but can certainly tell a significant difference. I have been happy with the results, I realize there are more aggressive options but Carbahn’s warrant match was important to me given it’s a new car. Bruce was great to deal with at the dealership, actually working with him on a few more upgrades at the moment. Let me know if you have any other questions.

[NKiss]

Originally Posted by CH01

I did, had the dealer handle the whole process with unlock, Carbahn tune and install the AA downpipe. Car was with them for just under two weeks and all went well. I haven’t had the car tested on a dyno but can certainly tell a significant difference. I have been happy with the results, I realize there are more aggressive options but Carbahn’s warrant match was important to me given it’s a new car. Bruce was great to deal with at the dealership, actually working with him on a few more upgrades at the moment. Let me know if you have any other questions.

I know this might be a little inappropriate, but total breakdown of the cost would be appreciated! Much thanks.

[VegasG42]

Originally Posted by CH01

I did, had the dealer handle the whole process with unlock, Carbahn tune and install the AA downpipe. Car was with them for just under two weeks and all went well. I haven’t had the car tested on a dyno but can certainly tell a significant difference. I have been happy with the results, I realize there are more aggressive options but Carbahn’s warrant match was important to me given it’s a new car. Bruce was great to deal with at the dealership, actually working with him on a few more upgrades at the moment. Let me know if you have any other questions.

So just to clarify - The Carbahn Warranty is a $1,750 3rd party warranty that Carbahn offers to customers who go with the Femto unlock so customers will still have some type of coverage in place, correct ?

I would imagine there are people who don't realize that your actual BMW factory warranty is basically out the window after the Femto unlock.

[Rdurty2]

Originally Posted by VegasG42

So just to clarify - The Carbahn Warranty is a $1,750 3rd party warranty that Carbahn offers to customers who go with the Femto unlock so customers will still have some type of coverage in place, correct ?

I would imagine there are people who don't realize that your actual BMW factory warranty is basically out the window after the Femto unlock.

And that if having to deal with these third party warranties it’s usually a giant headache and they will weasel their way out of coverage whenever they can.

[VegasG42]

Originally Posted by Rdurty2

And that if having to deal with these third party warranties it’s usually a giant headache and they will weasel their way out of coverage whenever they can.

Would be interesting to see how the logistics work if someone has to make a claim.

What the dealership has to say about the issue etc.

Or if you have to take your car to the Carbahn licensed dealer only.

And I still wonder if you could ever revert back to the factory BMW coverage if you ever went back to stock and did an ECU update, which of course would re-lock the DCM

[Rdurty2]

Originally Posted by VegasG42

Would be interesting to see how the logistics work if someone has to make a claim.

What the dealership has to say about the issue etc.

Or if you have to take your car to the Carbahn licensed dealer only.

And I still wonder if you could ever revert back to the factory BMW coverage if you ever went back to stock and did an ECU update, which of course would re-lock the DCM

You would never be able to regain bmws powertrain warranty once flashed. Their computers would flag the car instantly, doesn’t matter if it gets flashed back to stock.

Also the way the carbahn warranty is written is that any non-carbahn parts will then void their warranty and could be used to deny a claim. How they would know this is beyond me but it’s in their terms. Seems like their warranty is underwritten by Cornerstone United Insurance Services.

https://carbahn.com/warranty

[VegasG42]

Originally Posted by Rdurty2

You would never be able to regain bmws powertrain warranty once flashed. Their computers would flag the car instantly, doesn’t matter if it gets flashed back to stock.

Also the way the carbahn warranty is written is that any non-carbahn parts will then void their warranty and could be used to deny a claim. How they would know this is beyond me but it’s in their terms. Seems like their warranty is underwritten by Cornerstone United Insurance Services.

https://carbahn.com/warranty

Wow, interesting. It would be nice to hear from someone first hand who has gone down this road, and how things work and turn out.

Makes me wonder if you could just find any 3rd party warranty yourself and have coverage.

Or does Carbahn specifically have a 'contract' with the warranty company to provide 'coverage' to a vehicle that has changes to its DCM/ECU.