(HR) Hajes Racing

No Brain, No Pain - No Pain, No Gain

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BHG – How to find out maximal boost of your turbo

The Ultimate Question in (tuner's) Universe - How much boost is too much boost? How much boost should I run? How much boost my turbo can take? You name it...you asked in various forums but they just told you +/-6% is ok - is it really? In the beginning - [...]

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. PLEASE READ WARNINGS [...]

ECU remap guide for beginners – HOW TO NOT destroy your car

Right now, I'm preparing third version of ECU calibration data for latest car Skoda Hilda HR I . Two years of intensive studies, following masters and hours of testing on alpine roads...I'm looking back what I used to do wrong as beginner and what sort of disillusion I've been suffering [...]

Warning

Warning KNOW IS DO – if you must think you have no idea what you doing !!! THIS IS WEBSITE IS ABOUT HARSH REALITY – we don’t care about truth, lies, theories…ONLY ABOUT FACTS PROVEN BY REAL EXPERIMENTS IN FIELD. YEARS OF DESTROYED MATERIAL, HEALTH… I DO NOT INTEND TO OFFEND […]

BHG – ECU remap facts & myths

Some facts and myths about ECU re-calibration aka ECU remap or chiptuning. Harsh reality of chiptuning/ECU remap that nobody wants you to know. It looks like that very few want to see reality. PLEASE READ WARNINGS BEFORE YOU PROCEED !!! IF YOU FIND INFORMATIONS USEFUL, PLEASE CONSIDER DONATION. SUMMARY everything [...]

Dyno is marketing hype

Everybody loves dyno graphs and performance figures. After all, HP sells cars. Based on my experience, I do not wonder - most ask me for unreal results such as 200PS from 140PS factory engine...they even get upset if I share facts about so called chiptuning. PLEASE READ WARNINGS BEFORE YOU [...]

Skoda Octavia II (1Z3) – ECU remap v7.xx

This is history of version 7 series of ECU remap. Most likely end of line for Hilda HR I. Almost everything is understood and shared on HR web page such as BHG. PLEASE READ WARNINGS BEFORE YOU PROCEED !!! IF YOU FIND INFORMATIONS USEFUL, PLEASE CONSIDER DONATION. SUMMARY new Sachs [...]

Skoda Octavia II (1Z3) – ECU remap v6.xx

I still have issues with engine overheating despite improved cooling. I am starting to understand why manufacturer keeps high AFR. In theory 14.5:1 stoichiometric ratio is optimal for diesel fuel but in reality it smokes and overheats engine. This is history of version 6 series of ECU remap. PLEASE READ [...]

Skoda Octavia II (1Z3) – ECU remap v5.xx

The more I study Bosch manual and various books from real masters the more I see how commercial chiptuning fucks up dumb customers. Of course it is evolution of version 4 series with improved knowledge and more precise calculations. This is history of version 5 series of ECU remap. PLEASE [...]

Skoda Octavia II (1Z3) – ECU remap v4.xx

After fiasco caused by poor remap from tExperts and my experiments. I started all over again and again. Defucking decalibrated ECU of Hilda HR I. This is history of version 4 series of ECU remap. PLEASE READ WARNINGS BEFORE YOU PROCEED !!! IF YOU FIND INFORMATIONS USEFUL, PLEASE CONSIDER DONATION. [...]