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    Gearbox oil changed - RP synchromax

    Add this to the things I wish I had done sooner! Old MTF LT2 changed for Royal Purple Syncromax. Now I’m not going to say that it’s cured all the grumpiness of the ZF gearbox, 1st to 2nd can still be a little notchy, but I’m very pleased how much easier shifting it is and seems to be getting...
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    Check your (manifold) nuts…

    I did a thing! For a while now I’ve been increasingly paranoid about an exhaust leak mid-front of my Z4M. A tapping/ticking/chuffing sort of sound which was prominent when driving slowly past a armco barrier etc. I couldn’t see any issues underneath so left it alone. Whilst enjoying some...
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    Z4M lambda sensor bosch replacement part number?

    I bought bosch sensors from opie oils - was a straight plug and play swap. This was the two before the cat on a z4m.
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    Z4M Air Intake Options / Benefits / Problems?

    Finally took the plunge and fitted an eventuri yesterday. I can see my mpg suffering a dip as the noise is quite addictive :lol: good kit and everything just went on as per the instructions. Seems most vocal/resonant 3-5krpm :evil:
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    Repairing X pipe to back box flanges

    Hiya, With my MOT approaching in March I recall a comment from last year that the flanges connecting the x pipe to the rear silencers were looking a bit ropey. Having taken a look with a torch at least one side is fractured through the flange on the x pipe side and the bolts don’t look like...
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    OEM AGM Battery

    Quick photo of my old battery which ties in with the part number of realoem.
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    Ignition coils - which ones and where best to get them

    Next on my list of preventative maintenance are some fresh spark plugs and some ignition coils. 59k covered on the original coils over nearly 12 years makes me think they could do with a refresh as it’s not unheard of for them to break. The engine has felt a little hesitant to pick up of late...
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    What is normal for coolant/oil temp?

    I’m sure my oil temperature gauge used to reach 10/11 o clock so I thought I would plug in my OBD2 ELM widget and dashcommand to see what was happening. From cold the coolant warmed up to 70c fairly quickly but then on dashcommand took quite a long time to get to 80c. This seemed fairly low to...
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    Bugatti Chiron

    This one from last Sunday’s meet at The Warren near Danbury, Essex.
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    One car only....

    Zonda Roadster F please..
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    Le Mans 2018 - who is going? :)

    As June edges closer I wondered if any fellow z4 owners were attending this year. After a few years of practical car sharing I’m dusting off the M to use is it was intended :evil: I’ll be on the Thursday morning euro tunnel crossing at 07:06 and camping at the Thomas Cook Sporting Village...
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    Michelin PS4 - XL or not to XL

    My Z4M will be needing some new boots soon a combination of old rubber age, lower temperatures and wear down to 3/4-mm means the TC light is making many an appearance. Currently it has the OEM Contisport M3's which I gather are pretty poor compare to modern designs and compounds. I had...
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    Frustrating Outside Tap Connector

    Brrrr cold outside, it’s a bit faded but you can see the part - should be available in b&q etc :thumbsup:
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    Is Shell Helix Ultra Racing oil the same as BMW Twinpower?

    I've always used TWS/Edge pro (then FST now supercar) and I'm tempted to do an intermediate oil change this weekend. Now Shell has the contract with BMW the dealers stock Twinpower 10w-60, however is this the same as Helix Ultra Racing which is readily available at eurocarparts who happen to...
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    Which exhaust clamps for back boxes

    Just back from my MOT and it's fair to say that the rear exhaust clamps which fix the back boxes on have seen better days. One bolt head has completely rusted away and they are a bit crumbly but seems gas tight... for now :) Can anyone who has replaced them offer any advice on where they...
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    Kenstyle Z4

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    Bugger!

    Great end to the day when your friendly BMW service centre advises you that they sheared the nipples off both front brake callipers when you go to collect your car.... I did begin to wonder why they hadn't called. Bugger - two new callipers :(
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    Speaker cable advice (Kef Q35.2 previously bi-wired)

    Having flummoxed myself with subjective internet reviews I thought I would turn to my fellow zedders for some advice (also posted on PH). I have a pair of Kef 35.2 floor standing speakers driven by a trusty Ion Obelisk 200 amp. Previously I have been running the speakers bi wired using self...
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    Le Mans 24 hours - 14/15 June 2014

    As our group is finalising our booking with Club Motorsport I wondered if any other forum goers was planning on making the annual pilgrimage to Le Mans this year :) Perhaps an impromptu meeting at the Lanson tent in the village is in order :D Adam
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    Recommendations for pressure washer and snow foam applicator

    I admit I'm pretty casual when it comes to washing the car but hopefully I'm moving into my new house in a few weeks time and that gives opportunity to have a pressure washer to make life easier and car washing more fun :). I hear good things about nilfisk but would welcome any recommendations...
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