Hey!
Hello from Portugal. A friend of mine told me that you are talking about tuning a 1.5 dCi… Like I have a dCi 65 a little bite tuned, I believe I can give some information about it…
My Clio has at the moment about 100 HP at wheels and 250 NM of torque, the modifications needed to achieve this power were:
- Bigger turbo ( Garret GTV17v49 )
- Intercooler from dCi 80
- Intercooler tubes in inox and curves from Samco
- Cat removed and no EGR
- Exhaust system
- Different injectors
- Rail Box
- Remap
- Clutch
The bigger problem at the beginning was with the turbo and its cooling; after that problem solved… a bigger one appeared…
“Understand” the “Delphi” unit!
In a common rail system it shouldn’t be necessary to change the injectors, because in the remap it should be possible to change the injection timing, but in this case that it is almost impossible. We tried a lot of alterations but the engine kept entering in “safe mode”, so the solution ended to be the injectors swap…
Another problem was to raise the Rail pressure. Above 1600 bar the “Delphi” codification do not allow it, so the solution was a Rail Box! With this “gadget” we have raised it to about 2000 bar.
Running at this pressure makes that the revs still go up during a second even without throttle, but in some times it’s good, in acceleration and changing gears the revs don’t come so much down.
Another problem was the air filter. The amount of pressure the turbo makes thru such a small hole the airbox has makes them to become completely trashed. Original filter gone, K&N gone, back to original again (till the end of its days), and try to get a BMC in mean while… near by the original airbox will be modified to allow a bigger volume of air.
Besides the engine, the car also has RS front grille, Bilstein Sprint Shocks with H&R springs, OMP strut bars (front & rear), Ferodo pads. Near by, it will have full OMP Group N brake setup.
Cheers
