Pops and bangs gone after service? (Res delete)

Kaisah · 12-04-2020, 11:34 AM

Hey all

Just had a major service done to my 340i, so oil/spark plugs etc. Noticed in the drive home my exhaust wasn't popping/burbling on the overrun hardly at all. Maybe 10% of what it was before.

I have a dual resonator delete and a back box mod so it was pretty loud/pronounced before hand.

Could this be the car getting used to the new oil/spark plugs maybe?

Going to check my exhaust flap in the morning and make sure it's still opening too. It's started the dreaded rattle/squeak so may have stuck shut perhaps.. hmm.

Edit: service carried out by a indy garage so I don't think they flashed/updated my ECU

BMWILUVU · 12-04-2020, 12:27 PM

Ask your dealership if they flashed or upgraded your ECU.

Kaisah · 12-04-2020, 01:28 PM

Quote:

Originally Posted by BMWILUVU

Ask your dealership if they flashed or upgraded your ECU.

Should have mentioned in the OP, this was done at an indy garage so doubt they flashed anything

Skyhigh · 12-04-2020, 04:26 PM

It could be the electronics (ECU) adapting. Power was probably disconnected. Oil and spar plugs have nothing to do with it.

12-04-2020, 11:34 AM	#1
Kaisah Second Lieutenant 72 Rep 266 Posts Drives: 340i F30 LCI Join Date: Jun 2014 Location: Newcastle iTrader: (0) Garage List 2017 340i [0.00]	Hey all Just had a major service done to my 340i, so oil/spark plugs etc. Noticed in the drive home my exhaust wasn't popping/burbling on the overrun hardly at all. Maybe 10% of what it was before. I have a dual resonator delete and a back box mod so it was pretty loud/pronounced before hand. Could this be the car getting used to the new oil/spark plugs maybe? Going to check my exhaust flap in the morning and make sure it's still opening too. It's started the dreaded rattle/squeak so may have stuck shut perhaps.. hmm. Edit: service carried out by a indy garage so I don't think they flashed/updated my ECU
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12-04-2020, 12:27 PM	#2
BMWILUVU Lieutenant Colonel 809 Rep 1,597 Posts Drives: 340ix Join Date: Mar 2017 Location: The Boibs iTrader: (0)	Ask your dealership if they flashed or upgraded your ECU.
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12-04-2020, 04:26 PM	#4
Skyhigh Brigadier General 1882 Rep 3,869 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	It could be the electronics (ECU) adapting. Power was probably disconnected. Oil and spar plugs have nothing to do with it. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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