Intake manifold

[631twentyeighteye]

Didn't realize you had a 125i, slap on a good tune and you'll notice the significant bump in power. Cold air intakes or bolt on intakes in general give no gains, if anything they heat soak easier while providing a nice noise. The only other gains to be had on the n52 are catless headers. Keep your local laws in mind if you are thinking about going catless. emissions testing, sniffer testing, visual inspection, etc.

[TheSt|G]

Originally Posted by Ben GT

Ah OK, I did miss your point.

Getting the tune from Evolve or Performance developments in the UK will give good gains. I was hoping I could add to that with the manifold but just appears I need it correcting with the tune

Looking to get all my breathing mods in place before the tune so I can get the most from it...

Anything else you would recommend besides the intake?

Headers are the only other thing that make power in a way that even remotely justifies the price. Supersprint and Evolve work hand in hand on a lot of projects, and as a result Evolve can tune for them to get even more power. This is the setup I run and it is fantastic.

All other power mods are dubious at best when it comes to gains.

*Edit* I'm not sure if the 125i has secondary cats, so your emissions requirements could be something you want to look into before you dive into headers.

[Ben GT]

I'll look into headers. Cheers gents