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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Dec-16-2019, 03:40:56 PM   #1
EzraBlasing
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Default Burbles/Flames- harmful to motor?

Hey all,
I bought the BuildJournal tune and plan on downloading my stock file next week. After telling some friends, about 1/2 of them were mortified and told me I'll damage my engine if I do it. I am catless and all, but they were worried about carbon buildup damaging my S54. does anyone have KNOWLEDGE regarding this- will my engine be damaged LONG TERM? Let's say in 5 or 10 years- will I be kicking myself by wanting the pops and bangs? Will I have accelerated damage? Will I have many issues down the road? Please let me know. I want pops and bangs and flames, but longevity of my S54 is far more important. 110K on the motor by the way.

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Last edited by Obioban; Tue, Dec-17-2019 at 05:48:07 PM.
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Old Mon, Dec-16-2019, 03:43:09 PM   #2
Germen730
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Default Re: Burbles/Flames- harmful to motor?

Iíve heard that it is possible. Some tuners donít recommend it. However I donít think thereís enough evidence yet showing it does. I have a mild burble setup on my e92 M3 for about 20k miles and no issues.


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Old Mon, Dec-16-2019, 03:56:34 PM   #3
Steve M3
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Default Re: Burbles/Flames- harmful to motor?

Will certainly damage your fuel economy
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Old Mon, Dec-16-2019, 04:07:45 PM   #4
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Default Re: Burbles/Flames- harmful to motor?

Catalysts are indeed the first things that would get damaged, but you'll also destroy O2 sensors in no-time.

Beyond that, you just need to know you're dramatically increasing the exhaust gas temperature, which can damage exhaust valves, even pistons etc. if you're not careful.

It all comes down to how you drive, so it's not like running it for exactly 416 days causes X, but it can definitely damage stuff. At the very least you'll be yanking O2 sensors more often than you would like.
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Old Mon, Dec-16-2019, 04:18:39 PM   #5
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Default Re: Burbles/Flames- harmful to motor?

Good to know and thanks for the response. I know companies like BuildJournal and RK offer flame/burble tunes, So I find it hard to believe that it would be harmful. They wouldn't sell a product that would damage your engine, right?

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Old Mon, Dec-16-2019, 04:20:41 PM   #6
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Default Re: Burbles/Flames- harmful to motor?

Quote:
Originally Posted by Drewster View Post
Catalysts are indeed the first things that would get damaged, but you'll also destroy O2 sensors in no-time.

Beyond that, you just need to know you're dramatically increasing the exhaust gas temperature, which can damage exhaust valves, even pistons etc. if you're not careful.

It all comes down to how you drive, so it's not like running it for exactly 416 days causes X, but it can definitely damage stuff. At the very least you'll be yanking O2 sensors more often than you would like.
Thanks for the response. The tune also turns off post o2s so I guess pre o2s are the only sensors worth noting. I daily the car and don't track it, but do drive hard, so I don't think those damages will be in the cards, but it is also good to know.

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Old Mon, Dec-16-2019, 04:21:39 PM   #7
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Default Re: Burbles/Flames- harmful to motor?

Quote:
Originally Posted by Germen730 View Post
Iíve heard that it is possible. Some tuners donít recommend it. However I donít think thereís enough evidence yet showing it does. I have a mild burble setup on my e92 M3 for about 20k miles and no issues.


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Good to know and thanks for the response. I know companies like BuildJournal and RK offer flame/burble tunes, So I find it hard to believe that it would be harmful. They wouldn't sell a product that would damage your engine, right? That's at least my hope/idea.

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Old Mon, Dec-16-2019, 04:26:26 PM   #8
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Default Re: Burbles/Flames- harmful to motor?

Quote:
Originally Posted by EzraBlasing View Post
Good to know and thanks for the response. I know companies like BuildJournal and RK offer flame/burble tunes, So I find it hard to believe that it would be harmful. They wouldn't sell a product that would damage your engine, right? That's at least my hope/idea.

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The main thing is to make sure everything else is in order. Rod bearings, vanos etc....


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Old Mon, Dec-16-2019, 04:32:21 PM   #9
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Default Re: Burbles/Flames- harmful to motor?

Send it... Full send
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Old Mon, Dec-16-2019, 04:45:52 PM   #10
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Default Re: Burbles/Flames- harmful to motor?

Quote:
Originally Posted by EzraBlasing View Post
Good to know and thanks for the response. I know companies like BuildJournal and RK offer flame/burble tunes, So I find it hard to believe that it would be harmful. They wouldn't sell a product that would damage your engine, right? That's at least my hope/idea.

Sent from my SM-N975U using Tapatalk
Quote:
Originally Posted by EzraBlasing View Post
Good to know and thanks for the response. I know companies like BuildJournal and RK offer flame/burble tunes, So I find it hard to believe that it would be harmful. They wouldn't sell a product that would damage your engine, right?

Sent from my SM-N975U using Tapatalk
Keep in mind a lot of these companies are one guy or one guy and his girlfriend. Entrepreneurship is a wonderful thing, but if you're under the impression that these companies have office buildings of engineers and R&D facilities to ensure they're putting out safe tunes, you are mistaken.

Quote:
Originally Posted by EzraBlasing View Post
Thanks for the response. The tune also turns off post o2s so I guess pre o2s are the only sensors worth noting. I daily the car and don't track it, but do drive hard, so I don't think those damages will be in the cards, but it is also good to know.

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The primary O2's are the main source of feedback for your Air/ Fuel ratio, so yes they're the only ones worth worrying about, but they're also important
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Discussing Burbles/Flames- harmful to motor? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)