About Tuning Guru
Guides to tuning, servicing and repairing a car, written for the person holding the spanner rather than the person selling the part.
Most car advice online is written to sell something. A page about cold air intakes exists to move cold air intakes; a page about ECU remapping exists to book a remap. That is fine as far as it goes, but it leaves out the part you actually need — what the component does, what changing it will and will not do, and how to tell whether a given product is any good before your money is on it.
This site tries to fill that gap. Every guide starts from how the system works, then covers what a modification changes, then covers how to judge the parts on offer. There is no shop attached to it, no sponsored placement, and no affiliate link on any page.
Who it is for
People who do their own work, or want to understand what a workshop is proposing before they agree to it. The guides assume you can use tools and read a manual, and they do not assume you already know what a wastegate is.
There is more depth on Audi, Volkswagen and Porsche than on other marques. That is a reflection of where the site started rather than a claim that these are the only cars worth modifying — the system guides apply to anything with an engine in it.
What changed in 2026
The site ran on WordPress until 2026, when it was rebuilt as a static site. The rebuild was a good moment to go through the archive properly, and a number of pages did not survive it:
- Five pages were duplicates — the same article published twice under different addresses, in one case a single page that had swallowed eleven separate articles during an earlier import.
- Four were never real content: two placeholder pages still carrying lorem ipsum, an empty page, and a broken archive listing whose links all pointed at a staging server that no longer exists.
- Two were retired for being out of date. A directory of independent Audi repair shops had not been checked in years, and sending someone to a business that has closed is worse than sending them nowhere. A 2015 Volkswagen model-year line-up was built around diesels that were withdrawn from sale within months of it being written.
Every one of those addresses still works — each redirects to the closest live page, so no link anyone has saved or published is broken.
Three more guides kept their address but lost a promise they could not keep. Titles that ranked products, or dated a recommendation to a particular year, have been rewritten to describe what the guide actually teaches. Where a set of specific product picks had aged out, the picks were removed and the reasoning kept. Those pages carry an editor's note saying so, because an edit a reader cannot see is indistinguishable from a quiet deletion.
Prices were removed throughout. The archive quoted live retailer prices against products, captured years ago, and a stale price presented as a current one is misleading in a way that a stale opinion is not.
Corrections
If something here is wrong, it is worth telling us — this is reference material and an error in it costs somebody a weekend. Get in touch.