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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 mhd tuning stock exhaust



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      03-16-2019, 09:17 PM   #1
Syntegy
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N55 mhd tuning stock exhaust

I have a completely stock 2011 BMW 335 x drive and was wondering if I get a mhd tune stage one will I need new coils and spark plugs it's my daily driver and I dont want to be replacing coils right now and can I have a burble tune with stock exhaust and without catless downpipes.
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      03-16-2019, 09:21 PM   #2
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burbles are possible but not sure how good it is for turbos. Unless the plugs or coils need to be replaced already a stage 1 tune won't make a difference
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      03-16-2019, 10:03 PM   #3
TheGoodTheBadTheUgly
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You can have burbles for sure lol. Just watch your fuel consumption and oil consumption because it's going to go up. (I don't know why oil, but it does)

As for the coils and plugs, you won't really need them. Especially if your plugs are fairly new. But if you are due to maintain these, then I would do it.
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      03-17-2019, 12:20 PM   #4
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Quote:
Originally Posted by Chris1337 View Post
burbles are possible but not sure how good it is for turbos. Unless the plugs or coils need to be replaced already a stage 1 tune won't make a difference
Burbles are fine on the turbo as long as it's in soft- medium aggression with catless downpipes. I've spoken to MHD several times about this.

If you're running hard burble with 2sec then yeah you could have some issues.
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      Yesterday, 02:14 AM   #5
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Quote:
Originally Posted by Syntegy View Post
I have a completely stock 2011 BMW 335 x drive and was wondering if I get a mhd tune stage one will I need new coils and spark plugs it's my daily driver and I dont want to be replacing coils right now and can I have a burble tune with stock exhaust and without catless downpipes.
I have been running MHD Stage 2 for about 5 months now, I have an upgraded Charge pipe and catless downpipe. One of my coils broke within a week of the flash. Replaced it under warranty, and so far so good. Car is driven hard every other day or so. So far so good. I think you would be okay not replacing coil and plugs.
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      Yesterday, 04:20 PM   #6
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Originally Posted by Vampire335i View Post
Burbles are fine on the turbo as long as it's in soft- medium aggression with catless downpipes. I've spoken to MHD several times about this.

If you're running hard burble with 2sec then yeah you could have some issues.
He said to have it on medium aggression but would it be fine if I have it on very aggressive but only one or two pops so very low duration?
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      Yesterday, 04:22 PM   #7
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Originally Posted by MartinWake View Post

He said to have it on medium aggression but would it be fine if I have it on very aggressive but only one or two pops so very low duration?
yeah it's not going to do anything. I set it on hard for car shows/meets. Just not for daily driving
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      Yesterday, 04:35 PM   #8
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Originally Posted by Vampire335i View Post
yeah it's not going to do anything. I set it on hard for car shows/meets. Just not for daily driving
Oh alright and to achieve what I am trying to do just one or two pops when downshifting or revving down it should work by putting low duration right? and what is the difference with the more aggressive setting and medium just not as loud?
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      Yesterday, 04:48 PM   #9
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[quote=MartinWake;24553779]
If you want less popping you just lower the duration. Mine is 1.3 seconds at 1400 rpm and it's perfect. It's kind of self explanatory.

Less than 1 seconds hardly makes pops. Yes hard just is louder than medium. Soft/oem is barely heard in my car and I'm fbo with performance exhaust
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