TUNING THE NISSAN RB25DET (R33)
Another great Nissan RB25DET R33 GTSt came in sporting a Holset HX35 turbo controlled by a Haltech E11 v2 ECU. And yes — it belongs to a female owner. Respect!
The combination of a Holset HX35 and Haltech E11 v2 is a serious setup on an R33. The HX35 is a large-frame truck-derived turbo that can support very high power levels when the engine is built for it.
We carried out a full custom tune to match the Haltech ECU to the car’s specification. The result was a strong, reliable power delivery with excellent boost control. Ladies — take note. Consider an R33 GTSt as your personal transport of choice. You will not be disappointed.


hi mate seen alot of happy customers praising ur work fella just wanted to know wat is vals engine like did u find any issues with it as i am about to purchase it asap and also wanted to know in previous mapping session you commented on waste/gate and boost leak can u just clarify wat u meant please as u know the car well as it has only been mapped by u.also wat other mods can i do to up power and torque i.e. cams or up the boost?i will be coming to see you soon once i have the recommended mods done u mention for moore power.i am also in london which makes life much easier your advise /comments would be greatly appreciated thankz fella.
Ahmed.. did you ever make progress with the new purchase?
It looks good, I would like to upgrade my r33 gtst to stage 2. I’ll appreciate if u could send me what products or items I need or how much it will cost me to upgrade. Many thanks
Did you ever get sorted in the end ?
Did you ever get your upgrades sorted ?