Remapping F30 320i

[budgie smuggler]

I've seen various forum posts saying 320i remap well to roughly 328i levels and that the engines/turbos are very similar between the 328i and 320i.

What I want to know is how well the autobox etc holds up over the longer term with a (gentle & decent quality) remap in place. Has anybody had a map in place for a few years and can give me any feedback?

It's not a money thing, i've been searching for a 328i for a long while now, and cannot find one with the right spec. 320i however are fairly plentiful. It's just that when I test drove one it felt a bit flat.

It would be an auto, touring, non-X drive that I'm after.

Thanks

Edited by budgie smuggler on Friday 29th January 12:33

[Touring442]

It's the pistons and compression ratio that differ between the 320i and 328i. The 328i is 10:1 and the 320i is 11:1 which is just too high to be increasing too much. Map a 320i to 250 bhp and it will go pop. A mate is workshop controller at a BMW dealership and there are a few 320i warranty claims being kicked out when a 320i sts itself due to being remapped. 320i and 328i turbos are the same.

[budgie smuggler]

Okay thanks, sounds like it's not worth the risk. I'll have to keep hunting for my unicorn

[drdino]

Better look for an LCI with the B48 engine, much more reliable than the N20.

[Touring442]

B48's have a stupid plastic coolant return pipe that can break, dumping all the coolant in very short order. I think there is a recall or 'quality' enhancement on these. I think it's F30 and G20 plus others.

It wouldn't be a BMW without a crap component or two failing.