Quote:
Originally Posted by culpability
It is RECOMMENDED to add a charge pipe.
If you are also adding a down pipe, check out this article: https://bmwtuning.co/bmw-n20-tuning-guide/
You'll be most of the way to a stage 2 tune, so you may as well grab 1-step colder spark plugs (you can do that one pretty easily yourself, I'm about engine illiterate and managed to do it in about 90 minutes). You should probably also add a front mounted intercooler. Then you can just go all the way to stage 2. |
Stock plugs are good enough for the n20/n26, no need to go colder. BM3 recommends the stock plugs (ngk 97506) gapped at .022 - .023 for stage 2
https://bootmod3.atlassian.net/wiki/...+and+which+gap