Yo everyone, I'm Ben, just joined. I know this site more targeted at people with performance cars but I was looking for ways I could experiment with my car without destroying it. I'm looking to get hold of a performance car in the future and properly customise it, but at the moment I'm trying to more learn about performance upgrades and customisations, etc. and try a few out on my car, see what happens

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Any ideas for low-grade Modifications, ways I can experiment with engine/general modifications and get a bit of experience?
Ben