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      03-21-2017, 01:10 PM   #7
speedychuck2
Private First Class
United Kingdom
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Drives: '09 135i Manual
Join Date: Aug 2016
Location: Suffolk UK

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2009 135i 6MT  [0.00]
Thanks for the input so far- I will start off by pulling the plugs when I'm next home to see if I have any more signs of leaky injectors. My #5 injector went bad in spectacular fashion getting stuck wide open. The car wouldn't even run. Though I turned it off pretty fast so as not to wash the bore. When I took the plugs out and fired up the lpfp, I could see the fuel being thrown into the cylinder without even having the ignition on! Perhaps another is on it's way bad.

The car has just turned over to 62k miles, so it's not what I would say huge mileage, but to my knowledge it has never had a walnut blast. There aren't that many places that do it in the UK, especially not near me, but I definitely think the car would benefit from it. Is it possible something like a leaking PCV could cause a hesitation issue? Fitting an uprated one is on my list of mods along with OCC, but I want the car running right first of all.

The hesitation isn't really a jerk, more of a slight oscillation but as said, it's only under very light load. As soon as I apply more throttle, the car drives absolutely fine. The issue was still present when I was running stage 1+ but I've only noticed it since going over to version 7 maps. I'm going to do my clutch when I get home so will probably flash back to stock when I'm bedding in, so maybe I can tell more from that.
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'09 AW N54 135i 6MT - CIC - Logic 7 HiFi - MHD Stage2+ 98 - Wagner Evo 1 Performance I/C - VRSF Intakes - STC downpipes - Berk Race Axleback - 550i Clutch - BMWP Mirrors / Diffuser / Grilles / Skirts / Y-Pipe - SSDD Spoiler
12.9sec 1/4 mile @ 112mph - Santa Pod
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