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      03-01-2021, 09:33 AM   #23
jstewart
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Update, I finally installed the DME stage 2 tune a week ago. I have not installed the cat-less down pipes yet. The car is faster (seat of the pants) but I am sure installing the down pipes will make a bigger difference per DME. There is no difference in gas mileage with the DME stage 2 tune from stock, at least with normal driving. I am still getting 21.7 MPG around town. I am also going to replace the original Bosch plugs with one heat range colder plugs. Hope to get this done in the next couple of weeks.
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      03-05-2021, 09:00 AM   #24
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Ok guys I got a appointment to install the down pipes quicker than I expected at Stein Automotive next Tuesday. I am also going to have them install new NGK plugs that are two heat ranges colder and gap the plugs to .022. I bought the plugs myself online as every installer I got a quote from wanted a ridiculous price for them. The BMW dealer here wanted $45.20 each for these iridium plugs and I got them from Burger for $12.00 each.
Wish we had a 4 wheel dyno nearby to do some testing but I will use the drag strip as a alternative this spring.

Update: the install date got pushed out another week.

Last edited by jstewart; 03-11-2021 at 09:13 AM..
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      03-14-2021, 09:05 PM   #25
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Quote:
Originally Posted by jstewart View Post
I am also going to have them install new NGK plugs that are two heat ranges colder and gap the plugs to .022.
Just curious: what changed your mind on the plugs?
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      03-14-2021, 10:28 PM   #26
jstewart
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Quote:
Originally Posted by 9mmkungfu View Post
Just curious: what changed your mind on the plugs?
Recommendation from Burger based on the level of tune.
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      03-19-2021, 06:36 PM   #27
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Did you get everything installed this past week? How'd it go?
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      03-20-2021, 08:37 AM   #28
jstewart
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Quote:
Originally Posted by 9mmkungfu View Post
Did you get everything installed this past week? How'd it go?
No it got delayed because a mechanic had covid. It was rescheduled for Monday
the 22nd. It will be done on Tuesday the 23rd barring another problem.
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      03-25-2021, 10:45 PM   #29
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Any updates?
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      03-26-2021, 10:07 AM   #30
jstewart
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Yes it was finally finished today. What held it up was new intake filters (OEM) which were out of stock. Upon driving the car for the first time since installing the cat delete downpipes it felt a little flat at high RPM's. After doing multiple roll on full throttle pulls the car seemed to be adapting to the changes and got stronger and stronger. I noticed the same thing after first installing the stage 1 tune in the car. It was immediately stronger than stock but got progressively faster after driving 50 or so miles. The difference between stock and the stage 1 tune is greater (at least so far) than the stage 2 tune with the cat less down pipes and the stage 1 tune. This makes sense since the listed HP difference isn't as great. The car is definitely stronger.
I have not put 50 miles on the car yet so it may continue to get stronger as the stage 2 tune continues to adapt. What I do like so far is that the car feels just as refined as it did stock. I can not detect any more exhaust noise than when it was stock. There is definitely more intake sound when pushing it though. There was not any gas mileage penalty with the stage 1 tune. It will take a few weeks and maybe 500 miles to determine if the stage 2 tune with the cat less down pipes affect fuel economy. My guess is that they will not driving normally. I will get back in a couple of weeks with a answer about both fuel mileage and any further performance difference.
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      03-28-2021, 04:26 PM   #31
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What kind of power did it put down, stock, 1 then 2? It sounds like you're happy with it! Question regarding the downpipe: are you getting any additional exhaust fumes in the cabin?
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      03-29-2021, 10:37 AM   #32
jstewart
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Quote:
Originally Posted by 9mmkungfu View Post
What kind of power did it put down, stock, 1 then 2? It sounds like you're happy with it! Question regarding the downpipe: are you getting any additional exhaust fumes in the cabin?
No 4 wheel drive dyno nearby so I don't know what RWHP is.

There is definitely a difference in power stage 2 & downpipes but not sure how much of that is the stage 2 and how much is the downpipes.

Yes I am happy with it.

No exhaust fumes inside car
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      03-30-2021, 08:12 PM   #33
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Question

Quote:
Originally Posted by jstewart View Post
No 4 wheel drive dyno nearby so I don't know what RWHP is.
Sorry - missed this earlier. Interested in seeing the timeslips!

Quote:
Originally Posted by jstewart View Post
There is definitely a difference in power stage 2 & downpipes but not sure how much of that is the stage 2 and how much is the downpipes.

Yes I am happy with it.

No exhaust fumes inside car
Glad to hear. I forgot to ask earlier - what downpipes did you go with?
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      03-31-2021, 02:25 PM   #34
jstewart
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Glad to hear. I forgot to ask earlier - what downpipes did you go with?[/QUOTE]

VRSF downpipes. They were perfect fit and very well made. Only problem I had with them was I ordered gaskets with them which were missing from the shipment. It was more trouble to prove they were missing to VSRF than to just buy replacement gaskets.
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      04-08-2021, 10:25 AM   #35
jstewart
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So far I am still getting 21.7 MPG in town with some expressway driving. This is the same MPG I got with both the stock tune and the stage 1 tune. Around town I drive within the speed limit so this makes sense. This is amazing MPG for a car that weighs over 4700 pounds and has this much HP. For comparison my 2017 Honda V6 Accord gets less than 1 more MPG around town driven the same way.
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      06-08-2021, 08:07 PM   #36
jstewart
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Looks like there is no gas mileage penalty with the DME stage tune and VSRF cat
less downpipes. With over 2,200 around town miles after the ECU tune and downpipes the average mileage is 21.8 MPG. This with sensible use of the throttle in a urban environment. Occasional full throttle usage was also included where possible. I made a 200 mile trip today on the interstate and the car returned 28.9 MPG at mostly 75 MPH which was running with traffic. The mods did not affect the sophisticated feel of the car and are all a plus as far as I am concerned. I had the car in for a warranty repair and normal service and nothing triggered any questions.
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      09-06-2021, 05:33 PM   #37
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Quick update on my journey here.

I have installed the Stage 1 tune from Bootmod3 and love the performance so far.

I just received the cat-less downpipes from VRSF and unfortunately will be returning them and have Project Gamma downpipes on the way right now.

VRSF pipes do not come with mounting tabs and the company offers no explanation for it besides it being cost efficient to manufacture without them.
When asked for technical details and long term reliability they again throw a pitch sales at you.
I am failing to understand how much more the brackets would cost to be manufactured and how it would be a deal breaker for the customer...

PG cost is almost $400 more(ceramic coated) than VRSF but IMO peace of mind is worth it when it comes to these mods.

Excited to get PG downpipes on and flash the 750 to Stage 2!
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      09-17-2021, 03:02 PM   #38
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Quote:
Originally Posted by g12newb View Post
Quick update on my journey here.

I have installed the Stage 1 tune from Bootmod3 and love the performance so far.
I have Burger Stage 1 and I am underwhelmed by it. I was considering the BM3 but am hesitant.

Where are you seeing the performance increase? Any numbers? Or is it just feel?
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      09-17-2021, 03:11 PM   #39
g12newb
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Quote:
Originally Posted by KJEEP View Post
Quote:
Originally Posted by g12newb View Post
Quick update on my journey here.

I have installed the Stage 1 tune from Bootmod3 and love the performance so far.
I have Burger Stage 1 and I am underwhelmed by it. I was considering the BM3 but am hesitant.

Where are you seeing the performance increase? Any numbers? Or is it just feel?
I don't have any numbers but I have switched from stage 1 to stock 3 times so far and you can tell the difference on the 750 especially in sport mode.

I suggest you give Bootmod3 a try. It's a great community and millions of users.

Downpipes have landed by the way. In love with this craftsmanship
Also the correct tabs show here vs VRSF does not feel the need to include these on their product
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      09-18-2021, 06:43 AM   #40
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Quote:
Originally Posted by KJEEP View Post
Quote:
Originally Posted by g12newb View Post
Quick update on my journey here.

I have installed the Stage 1 tune from Bootmod3 and love the performance so far.
I have Burger Stage 1 and I am underwhelmed by it. I was considering the BM3 but am hesitant.

Where are you seeing the performance increase? Any numbers? Or is it just feel?
There is plenty of data on the market from different tuners showing a 100HP+ difference over stock. I personally went with DME Tuning. It's a night and day difference over stock. Increased power, better throttle response, no turbo lag, increased MPH (gov removed) and functions very efficiently vs a pigggy back.
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      09-23-2021, 09:05 AM   #41
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Quote:
Originally Posted by 13M5F10 View Post
There is plenty of data on the market from different tuners showing a 100HP+ difference over stock. I personally went with DME Tuning. It's a night and day difference over stock. Increased power, better throttle response, no turbo lag, increased MPH (gov removed) and functions very efficiently vs a pigggy back.
I heard good things about DME and they are fairly local to where I am BUT the F01 is not listed as a supported model. Maybe the demand just isn't there and they didn't bother.

Also, isn't DME a bench tune - where you have the send them your actual DME?
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      09-24-2021, 08:13 AM   #42
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Quote:
Originally Posted by KJEEP View Post
Quote:
Originally Posted by 13M5F10 View Post
There is plenty of data on the market from different tuners showing a 100HP+ difference over stock. I personally went with DME Tuning. It's a night and day difference over stock. Increased power, better throttle response, no turbo lag, increased MPH (gov removed) and functions very efficiently vs a pigggy back.
I heard good things about DME and they are fairly local to where I am BUT the F01 is not listed as a supported model. Maybe the demand just isn't there and they didn't bother.

Also, isn't DME a bench tune - where you have the send them your actual DME?
Doesn't hurt to reach out and ask what they offer for that platform.

On some cars they do need you to send the DME in but on the G11/12 they can remote tune them.
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      09-25-2021, 10:29 PM   #43
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Just got a 750 and thinking about getting Dinan Stage 2 tune
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      04-04-2023, 07:50 PM   #44
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Originally Posted by jlin101 View Post
Both--when I purchased BC 1.5 years ago it worked fine. BC updated the app this past summer such that HU-NBT module was no longer accessible if the car had 3rd-party coding, citing some customers had complained about errors. Unfortunately, Apple doesn't allow you to revert to an earlier version of the app, either. Here is the quote from BC:

"The headunit has to be in its original state. If you used a third party solution to enable CarPlay or the navigation has been unlocked, these changes have to be reverted, because BimmerCode will not allow coding the headunit otherwise. Retrofitted iDrive systems may also not be accessible under certain circumstances."
Sorry to revive an old thread but I was wondering how to revert my head unit to its original state. Mine was upgraded before I got the car and now I cant do anything with it via BimmerCode.
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