Any ideas what's going on here??

nicktyler · 12-02-2013, 05:37 AM

Hi

At the weekend I got my car put back to standard. Downpipes, intercooler and map. Now the turbo whistle is quite loud (louder when cold) and there is an error code for the o2 sensor after cat (can't remember exactly which code).

Does this sound like an exhaust leak? Maybe the dp's are not done up properly or something.

What do you think? It is going back to the garage but I just want to get a head start or first place to look. It had been running fine up untill the work.

What do you think?

Thanks

Nick

idnan · 12-02-2013, 06:03 AM

Did they replace the turbo to DP gasket? Could be a leak there if they reused the old ones.

Make them check the O2 sensors are tight and check that the plugs haven't been swapped as that could cause an error too. I've heard of the sensors being damaged when you change DPs as they are a bit fragile.

nicktyler · 12-02-2013, 06:10 AM

I think they might have used the old gaskets. Also I have just noticed that there is a single bolt left in the catless dp's. I imagine if one of the bolts is missing that could explain everything!!

Sparky68 · 12-02-2013, 06:51 AM

Check the intercooler connection.

12-02-2013, 05:37 AM	#1
nicktyler Major 32 Rep 1,271 Posts Drives: 335i (sadly gone) Join Date: Jan 2012 Location: Essex iTrader: (3) Garage List 2007 BMW E92 335i [0.00]	Any ideas what's going on here?? Hi At the weekend I got my car put back to standard. Downpipes, intercooler and map. Now the turbo whistle is quite loud (louder when cold) and there is an error code for the o2 sensor after cat (can't remember exactly which code). Does this sound like an exhaust leak? Maybe the dp's are not done up properly or something. What do you think? It is going back to the garage but I just want to get a head start or first place to look. It had been running fine up untill the work. What do you think? Thanks Nick
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12-02-2013, 06:03 AM	#2
idnan Lieutenant Colonel 76 Rep 1,518 Posts Drives: Alpine White 335i Join Date: Nov 2010 Location: Birmingham iTrader: (9)	Did they replace the turbo to DP gasket? Could be a leak there if they reused the old ones. Make them check the O2 sensors are tight and check that the plugs haven't been swapped as that could cause an error too. I've heard of the sensors being damaged when you change DPs as they are a bit fragile.
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12-02-2013, 06:10 AM	#3
nicktyler Major 32 Rep 1,271 Posts Drives: 335i (sadly gone) Join Date: Jan 2012 Location: Essex iTrader: (3) Garage List 2007 BMW E92 335i [0.00]	I think they might have used the old gaskets. Also I have just noticed that there is a single bolt left in the catless dp's. I imagine if one of the bolts is missing that could explain everything!!
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12-02-2013, 06:51 AM	#4
Sparky68 Brigadier General 699 Rep 4,267 Posts Drives: 2016 M2 Alpine White Join Date: Oct 2012 Location: Cambs UK iTrader: (11) Garage List 2016 BMW M2 [0.50] 2017 BMW F30 330D [0.00] 2014 M135 [0.00] 2007 BMW 335i [0.00]	Check the intercooler connection. __________________ OG M2 7sp DCT Masata FMIC - Masata Boost Pipe - Cobra Catless DP - Powervalve Exhaust - Devilsown Methanol Injection BM3 Stage 2
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