Yep, I've seen precious few non Ms with throttle bodies, and all the pics have been of dbillas kits or possibly some other manufacturer, but in all cases, there were only used in race classes where the engine size was pegged, and money no object to wring ever last HP out of the engine.
As a rough guide, you could get 2 M3 engines for the price of getting throttle bodies fitted.
Motorbike TBs are the next option, nice and cheap, and i think the injector angle is more "average" meaning there is more of a chance of getting them to work on anything.
As already stated by Enda, the M3 bodies are virtually impossible to fit. There are far too many problems to make it worth while. Even if you did get them to work properly you would need some very hairy cams to get any benefit out of them.
Best to go with an M3 lump if you want a real hike in power, or go M50manifold/bbtb/ cams if you want to go half way
i am looking into this whole m50 idea for my 320 and was wanting to know which models have the m50 motor so i can go on the rob at my local breakers
of topic hi momanatorz i see you replaced the punto with a bmw lol funny lol that my cinq went for a bmw too please tell me you aint going sticker happy on this one too lmao
m3's are at rock bottom price wise so imo i would go for an m3 if its a power thing
A friend of mine has done this on his 325i a while ago and he was quite happy with the results. Definitely a lot more responsive and some gains in the upper range. He also had free flow exhaust and chip.
I think I'll do it this summer.
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