The inlet pipe popped off

[Mark CSL]

The inlet pipe popped off last night at a trackday at knockhill
pushed it back on but after 1 lap off it popped again

Trackday wasted still time for an upgrade

The pipe broke at the neck is this were they all go ?

I have popped a Jubilee-Clamp (hose clip) round it so it cant pop off till the upgraded metal pipe arrives.

[alexk]

Mark my Z4 has never had this issue (same engine with your 1M).

[Mark CSL]

Hi alexk
Its a problem most 1M have i understand, i have ordered an alloy pipe to replace it with.

it happened on a short shift all the torque was too much for the little fela

[alexk]

Just checked Mark.

The Z4 has a different part which makes sense as the intercooler position is different in the different chassis.

Have fun with the small beast !

[nw942]

Is it part #5 on this diagram?

http://www.realoem.com/bmw/enUS/showparts?id=UR93-USA-11-2011-E82-BMW-M_Coup%C3%A9&diagId=13_1185

Am I right in assuming that if you are on boost and then lift off the throttle the charged air will be directed through items 13 and 14 into the exhaust? and if so, why is there two bypass pipes rather than one?

Thanks

[Mark CSL]

Yes Part 5 is the pipe.

The other 2 parts are dump valves, diverter valves, Blowoff valves are used to prevent compressor surge, a phenomenon that readily occurs when lifting off the throttle of an unvented, turbocharged engine. When the throttle plate on a turbocharged engine closes, the high pressure air in the intake system is trapped by the throttle and a pressure wave is forced back into the compressor. The compressor wheel slows rapidly and may even stall and the driver will notice a fluttering air sound. The rapid slowing or stalling stresses the turbo and imparts severe turbo lag if the driver accelerates immediately after the surge event.

Mark

[Mark CSL]

I have ordered This pipe from ebay i got it for £127.50 free postage could have to pay import duty but its only £21 so a good saving.

http://www.ebay.co.uk/itm/1619681114...%3AMEBIDX%3AIT

Its the same pipe ca sell for £229.00

[octainejunkee]

i broke 7 of these in as many weeks, the last oem one broke with a bmw tech in the car.
It all snowballed from there as i booked it into Spec R for my custom cooler and hard pipes,, then had to make them work harder:hahaha:.

[Mark CSL]

New Pipe is here and installed its a much better item than the OEM part
lets hope this lasts here are some pictures :thumbs:

[SSS_csl]

This is my set up.
Similar I think and gives good gains

[octainejunkee]

gruppe m looks good, does it sound good?

[SSS_csl]

gruppe m looks good, does it sound good?

I think the pipe makes the most difference to induction noise. The gruppe m just sounds the same really but the pipe has made all the whistling noises which are nice

[nw942]

Were/are you running a standard ECU map Mark?

Just wondering whether a standard car is likely to be afflicted?

[Mark CSL]

Were/are you running a standard ECU map Mark?

Just wondering whether a standard car is likely to be afflicted?

Stage 1 COBB upgrade but it will happen on a standard car there has been lots of failures they all snap at this part.

Still the upgraded pipe will last and is half the price of the plastic pipe bmw sell win win :thumbs:

[E46M3Mike]

Hi Mark,
What's on the 1M now?
Do I need to replace anything to prevent this happening again, assuming you've gone back to OEM???

Thanks,

Mike