B58 stage 2+ needs!

What mods do you have at the moment?

You need some kind of sports cat and a fuel pump. Most people use TU fuel pumps. And then of course a map.

You don’t need an air filter. But it does help over stock. You can change the turbo elbow and intake elbow for a bit more power.

Charge pipes aren’t as weak as the previous generations on these so most people don’t have a problem. I would still advise upgrading as it’s a pain if it goes and then you are stranded without a car.

Intercoolers aren’t a massive need until a bit further down the line.


So for need -

A decat - https://nforcd.com/search?q=b58+decat OR a sport cat - https://nforcd.com/search?q=b58+sport+cat

Most people use TU fuel pump, because of the price - https://nforcd.com/products/bosch-bmw-f20-f21-f30-f80-b58tu-high-pressure-fuel-pump-upgrade-inc-m140i-m240i-340i-440i

And a map - either custom or one of these

Mg flasher is great - https://nforcd.com/products/mg-flasher-b58-tuning-maps

Or BM3 - https://nforcd.com/products/bootmod3-bm3-m140-m240-340i-440i-z4-b58

For extra.

B58 panel filter - https://nforcd.com/search?q=b58+panel+filter the Osprey performance ones great

Or you can go a full intake!

Intake elbow - https://nforcd.com/products/intake-silicon-inlet-pipe-b58

Turbo elbow - https://nforcd.com/products/b58-turbo-inlet-elbow

Both of those will improve the flow of air coming in.

Last thing is a charge pipe - https://nforcd.com/products/charge-pipe-for-bmw-m140i-m240i-340i