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      09-12-2017, 05:45 AM   #1
WhyGeeGee
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DME Tuning vs RC Chip

I am thinking of installing the Eisenmann muffler & downpipe for my X5M and wanted to either use an RC chip or do a DME tune.

Which one is better for people who have tested either one.
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      09-12-2017, 07:10 AM   #2
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If DME knows what they are doing, it will have an advantage over RC since they can manipulate the ECM for cat delete, increasing boost through the shift, etc. One downside is the ECM has been cracked and the dealer can deny warranty. Another downside is reduced boost at the shift is there for a reason. RC will make all the power pump gas will support and is pnp. Totally depends on your goals. Good luck.
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      09-13-2017, 01:36 AM   #3
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Quote:
Originally Posted by onfireX5 View Post
If DME knows what they are doing, it will have an advantage over RC since they can manipulate the ECM for cat delete, increasing boost through the shift, etc. One downside is the ECM has been cracked and the dealer can deny warranty. Another downside is reduced boost at the shift is there for a reason. RC will make all the power pump gas will support and is pnp. Totally depends on your goals. Good luck.
Thank you for the reply. My friends are suggesting that I go with DME+JB4 which translate to stage 2 but for me I don't want to pay for 2 tunes.

I just want my car to be in the safe zone without me worrying about parts breaking down. What I like about the RC is that I can remove it whenever I want which isn't the same with DME as I need to send my ECM to them.
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      09-13-2017, 04:52 AM   #4
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Quote:
Originally Posted by WhyGeeGee View Post
Thank you for the reply. My friends are suggesting that I go with DME+JB4 which translate to stage 2 but for me I don't want to pay for 2 tunes.

I just want my car to be in the safe zone without me worrying about parts breaking down. What I like about the RC is that I can remove it whenever I want which isn't the same with DME as I need to send my ECM to them.
rule of thumb is DONOT STACK piggybacks on top of ECU tunes or piggybacks on top of piggybacks unless you have a specific purpose for it, i.e. letting JB4 control meth. It's not a 1+1 = 2 scenario when it comes to mudding your car.
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      09-14-2017, 03:30 AM   #5
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Quote:
Originally Posted by Bluesummer View Post
rule of thumb is DONOT STACK piggybacks on top of ECU tunes or piggybacks on top of piggybacks unless you have a specific purpose for it, i.e. letting JB4 control meth. It's not a 1+1 = 2 scenario when it comes to mudding your car.
I agree. The only reason for me to have JB4 is to be able to select maps based on my setup.
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      09-17-2017, 05:29 PM   #6
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Just go JB4, yes if your car has DME flash/tune it will set a permanent fault code and the BMW tech will see it immediately. I have JB4 and catless downpipes, drive the hell out of it, runs mid 11s in 1/4. on 93octane. Best bang for your buck in my opinion.
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      09-18-2017, 05:39 AM   #7
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Just go JB4, yes if your car has DME flash/tune it will set a permanent fault code and the BMW tech will see it immediately. I have JB4 and catless downpipes, drive the hell out of it, runs mid 11s in 1/4. on 93octane. Best bang for your buck in my opinion.
Run map 7 with E85. 11.2 everyday.
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      09-19-2017, 08:19 AM   #8
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Run map 7 with E85. 11.2 everyday.
Was going to try that soon, can't wait!!
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      09-20-2017, 01:27 AM   #9
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Was going to try that soon, can't wait!!
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      09-20-2017, 05:35 AM   #10
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can someone point me to where can I purchase a JB4 tune? as on their website I could only find kits for 6cyl engines.
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      09-21-2017, 12:54 AM   #11
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can someone point me to where can I purchase a JB4 tune? as on their website I could only find kits for 6cyl engines.
http://www.burgertuning.com/s63tu_m5_m6_bmw_jb4.html
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      09-22-2017, 12:28 PM   #12
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Quote:
Originally Posted by WhyGeeGee View Post
I am thinking of installing the Eisenmann muffler & downpipe for my X5M and wanted to either use an RC chip or do a DME tune.

Which one is better for people who have tested either one.
I ended up with getting a DME tune, catless downpipes and a "stage 3" tune (adjust boost) on my X5M...and I can't stop grinning every time I am driving that car. Very happy with the outcome.

You should hold off on grabbing the eisenmann's until after you had some time to hear how your car sounds after changing your downpipes. I was also looking into the Eisenmann's, but after getting rid of my cats, my X5M is plenty loud for me, so I'm actually sticking with stock.
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      09-24-2017, 05:49 AM   #13
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Quote:
Originally Posted by Apan View Post
I ended up with getting a DME tune, catless downpipes and a "stage 3" tune (adjust boost) on my X5M...and I can't stop grinning every time I am driving that car. Very happy with the outcome.

You should hold off on grabbing the eisenmann's until after you had some time to hear how your car sounds after changing your downpipes. I was also looking into the Eisenmann's, but after getting rid of my cats, my X5M is plenty loud for me, so I'm actually sticking with stock.
I thought about your setup but was worried that without the JB4 my car will run on high boost all the time.
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