Thanks mate, very appreciatedTwenny wrote:Oh my that's astonishing bud
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Just remembered that last night apparently I had written a doc meant to show the mods done in the past few weeks (but I don't recall writing it )
Anyway, here it is:
Apologies for the long post, but as promised in the thread title, this has been one major overhaul affecting looks and performance. The most obvious thing of course as you can see is that now the car has had the BMWP body kit treatment, including the stripes. I was afraid that the stripes would be a “step too far” but surprised to say that they look much better in the flesh and are not chavvy. Fitted kit includes the front bumper, side skirts, rear darkline (high) lights, and a BMWP diffuser (replica bought from mor-vision). Also got a replica of the BMWP exhaust tips; unfortunately, I had that fitted with the OEM diffuser and since the new one sticks out a fair bit, the tips are pretty receded. Don’t know if I’ll keep it that way or not.
Next, I have had fitted the front 435i/M135i Brembo brakes with 340mm discs. The reason I went with 340mm discs, simply put, is weight saving. The calipers are the same as from the F-series M3/M4 but the latter have 380mm discs which would add a fair bit of weight. Currently using the OEM vented discs but I plan on sourcing some lightweight grooved discs with Project Mu/Endless/Carbotech pads; definitely not anytime soon though as the discs and pads have a fair bit of life left and bite is great.
I have also got rear 135i Brembo brakes waiting to go on since I have the 135i discs rather than the BMWP ones for hatch fitment. Colour chosen is Porsche Amaranth Red, which is a pretty unique colour.
Clutch and flywheel have been replaced (OEM LuK parts), and clutch bite is now as good as new; funny stuff as I never noticed it was slipping before (even though slightly), and only changed the parts because of the flywheel rattle. Along with the CDV delete and the short-throw clutch stop, I have also fitted the BMWP short-shifter and E46/E9x M3 gear mounts; they’re the same size as E8x but stiffer. Gear changes slightly stiffer but it’s a true joy rowing through shifts now, especially with the 123d’s short gear ratios. Bit more work in traffic but all becomes worth it on an empty stretch of road; it has now become one of the best man-boxes I’ve had the pleasure to drive.
Rear E81 chassis brace has been fitted, and I have to say this – it’s quite an underrated mod you can do to your car for small change. Most people would think that in order to make the car “point” better, you would need to change the front set-up. However, after fiddling with the rear set-up (Powerflex yellow bush inserts already fitted), I can confidently say that the rear set-up is the crux of the whole suspension set-up on the 1-series. The brace and the bush inserts work excellently together and the car is better balanced in corners.
Power-wise, I have removed the DPF and the car has been remapped to 280 bhp. Still need to have it up on a dyno.
Sad to say that my journey has almost come to an end; the major mods left to be done are ST XTA coilovers and, potentially, a rear subframe/diff swap from an M3 E9x (manual rather than DCT perhaps? Think the shorter ratio will suit the 123d; I like rowing through gears!). It’s not something essential unlike the coilovers, so I’ll patiently waiting for a local one to pop up for breaking. If that doesn’t happen, no biggie – I’m sure the coilovers are the proper missing piece in the handling set-up anyway. As soon as the coilovers go on I will also have the front E93 ARB fitted, no use fitting it now as it will just exacerbate the downfalls of the stock damper/spring setup. If I get hold of an M3 LSD, a thicker rear ARB will go on.
Hope you enjoyed reading this, and I really can’t thank you all enough for the help provided. Special thanks of course go to marco_polo, who is an infinite well of knowledge; thanks for your patience as I message you time and time again for advice and you always promptly respond with answers!
The car won’t be modded anymore further than this – need to be firm with myself. I admit I have considered selling it and buying a 130i instead, but my end-car has always been a 981 Cayman S/GTS and I want my first taste of straight-six heaven to be my ultimate one, with one of the best straight-six engines ever produced. I will just enjoy the 123d now, save up for some more responsible stuff in life, and then when the time’s right get the Cayman.