(HR) Hajes Racing

No Brain, No Pain - No Pain, No Gain

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AFR – Air to Fuel Ratio for TDi

There is lots of confusion, myths and misunderstanding. Very little info about TDi engines in books. Fuelled by black smoking tractor puling ECOterrorists from USA. No wonder there is so many jokes about retarded TDi owners with black smoking cars who believe more fuelling is more power. If you dynotune [...]

Pagid RSL19 rear brake pads

Problems with overheating rear brakes forced me to experiment with new friction material Pagid RSL19. Ferodo DS2500 has got optimal temperature about 300-500deg C (friction coefficient about 0.42) with short burst of 700deg C but I’ve found out once friction material is already burnt it never brakes as before.I’ve contacted Mike […]

Brake balance – proportioning valve

Braking performance is not about big brakes but about brake balance or brake bias.When I upgraded suspension I had no idea about brake balance and how I screwed up factory brake bias. It somehow brake better without too much brake pressure but I had no idea why rear brakes were […]

ECOterrorism – EGR facts & myths

Everything looks great on paper and in theory – there is lots of confusion, theories and endless discussions…all is not as it seems just like whole propaganda of ECOterrorism. BEFORE YOU START, PLEASE READ WARNING FIRST.EGR is great tool for warming up engine but once is engine at operational temperature […]

Experiment with Garrett GT1646V refurbished turbo

I whined about refurbished turbos and I don't really like rebuilt/reused/refurbished things unless it is under supervision of Hajes Racing superior machining, repairing and design skills/experience...but there is sure few more masters around but they rarely do it commercially.  PLEASE READ WARNINGS BEFORE YOU PROCEED !!! IF YOU FIND INFORMATIONS [...]