Jeroen Leenders is what is on his pasport 
Here's a pic from last season:
But now the crazy f*ckerd got into a "arms-race" with another well-known Dutch-Dubber, Carlo Hulsen, who runs his own company, Hulsen Turbo Tuning.
Last winter Jeroen got the crazy idea, and converted his 1,8 20vT into an 1,8 20v Bi-Turbo, with two hugh arse Garrett's on it, forged pistons, head work, G60 transmission etc., too much to mention.
It generated approximately 440BHP, but that wasn't enough
So there can bigger inletpiping, a bigger intercooler and 4 throttles (ITB's) an extra fuel-line to the front, 1000cc injectors and some more stuff.
All of it runs on a stand-alone motormanagement system, and yesterday was the big day to ship the mk4 to Hulsen Turbo Tuning to get the motormanagement fine-tuned
And I couldn't resist making some pics and a flic, and let you all into the fun of this major project.
"Upper" Turbo (visible)
"Lower" Turbo (invisible, unless you look really close, you can just spot the inlet of the turbo, no filters used whatsoever, since that only restricts the air-inflow
)
Airbox & the ITB's
Now that's on full enginebay I can tell you
En natuurlijk ook ff een kort filmpje gemaakt
According to Carlo Hulsen, a power of 500-550 BHP is reasonable, IN A MK4!!!
