Practical performance advice is surprisingly difficult to find, but there is at least one reliable source.
The best way to ruin a car enthusiast’s fun is to say any sentence to them which includes the word “practical”. OK, so that might be a slight exaggeration, but fun and practical do often seem to be at opposite ends of the spectrum. That’s why we like Poor Man Mods, a YouTube channel that blends the fun and the practical by giving performance-oriented tips for those with regular cars who want to get a bit more out of them.
So if that looks appealing to you, head over and check them out, there are a ton of videos already up, and more are added regularly.