Tech Guides

R-Series, V-Core, Hyper V-Core, N-Flo, HH Series - KOYORAD's lineup looks overwhelming until you understand what each one does. This guide breaks down the real engineering differences, when each se...

Both Civic Type Rs are brilliant, but once you start modifying them, the FK8 and FL5 diverge in ways the spec sheet doesn't show. From the MAF sensor change nobody talks about to which parts actual...

The PRL HVI ships with a choice of two billet MAF housings - Street MAF and Race MAF. Get it wrong and you'll either leave power on the table or trigger check engine lights. Here's exactly how to c...

Injector Dynamics has officially released the full X-Series range for the Toyota GR Yaris and GR Corolla - ID1050-XDS, ID1300-XDS and ID1750-XDS. This buyer's guide breaks down each injector, who i...

Every DIXCEL compound explained - EC, Premium, M, ES, S, Z, RA, RE, Specom-B - with operating temperatures, friction coefficients, dust behaviour, and who each pad actually suits.

Tomei Powered Japan builds four distinct titanium exhaust sub-brands - EXPREME Ti, Ti RACING, Ti SPORTS and EXTRACK Ti - each engineered for a different car, a different driver and a different prio...

Everything you need to know about upgrading the downpipe on your Honda Civic Type R FK8 or FL5 - fitment, power gains, what to look for in a quality downpipe, and what supporting mods you need.

Every component of the WRX and STI exhaust explained - headers, downpipes, cat-backs, and turbo-backs. What each upgrade does, what power to expect, and what supporting mods you need at each stage.

Which Blouch Dominator turbo suits your WRX or STI build? We compare the 1.5, 2.5, 3.0 XT-R and G2R series by power, spool characteristics, and the supporting mods each one needs.