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Group N ecu - email from renaultsport.



  CTR EK9 turbo
I wrote to Renaultsport asking about this Group N ECU i got:

I wrote: Please send information regarding the use of the Group N ECU within the Renault Sport Clio (phase 1). What regulations are subject to this class? How is the powerband altered using this ECU?

Many thanks etc.

The reply from: "HANSEN Lionel" lionel.hansen@renault.com was:

Dear mister (Simon),
The FIA rule demand to keep the sensors of series present on the engine.
It is possible to modify the connctions of cablage as well as to change the ECU Box.
Concerning the characteristics of the modifications in to the Renault Sport ECU Box.
The series engine speed is supposed to be 7250 rpm for 1 to 3 and 7000 rpm after.
The Groupe N box is always to 7400 rpm limited 1 to 5.
Power + 8 Hp. (with the exaust system)
Torque + 1,7 Mkg.
Let me know if you need anymore information.

Lionel Hansen
Renault Sport Technologies
Direction Competition

Im going to reply and ask what exhaust system they use....
 


is this ecu designed to run with a group n exhaust and filter? or just the standard car, otherwise it might run a ted lean if youve got a few mods?
 
  CTR EK9 turbo


Well, the guy who fitted it prepares race cars - one being a clio cup car. He told me it was designed for use with the standard setup on the car, with no exhaust or filter(?) i asked him and said to him, "are you sure?" and he said "yep" ! Has anyone ever heard of this chip? Its made it quicker and revs higher, which is nice - but the engine feels like it needs an exhaust to breath better(?)
 


well, group n being showroom spec, i would think it whould run with the standard airbox and exhaust.
 
  172 ph1
Have anybody Renault Sport Gr.N Exhaust on Ph1? I thing that nobody. Diameter of the exhaust is 67 and 70mm (ealier). It is diferent than others manufacturers which completly sold only 55 or 63,5mm. Why nobody using 67 and 70mm?
 
  172 ph1
I am litle disapointed that there isn't no topic about Renault Sport Group N exhaust and that is reason for my post to one of the oldest topic wher is something about original Gr.N parts from Renault Sport. I hope that this is untrue, and somebody write me about own experiences with Gr. N Renault sport Gr. N parts with dyno charts.
 

NorthloopCup

ClioSport Moderator
NorthloopCup: thanks for your replay. Have you measured this on dyno?

No mate never had this run up on the dyno. Tbh it doesn't feel like it makes a great deal of difference to me, but then again your never going to feel the 7bhp it claims. I've got the grp n timing tool to alter the cams but haven't got round to doing it. I'm trying to find out if the grp n cams are different as I've been told the exhaust cam is different to oe.
 
  172 ph1
The Group N Exhaust are: Renault Sport - for Ph1 with 70mm diameter, and 67mm for Ph2 Price are around 1200Eur for complet(decat, midle pipe, back box), OMP are 63mm- price for complet is around 370-500Eur, Oreca Motorsport 55m, price is around 550-600Eur...
 
  172 ph1
Realy nobody used Renault sport Gr. N Exhaust? I know that it's black Fe steel (no inox) and the price is twice more than others nice sounding and looking inox exhaust. Or is it different?
 
  Clio172cup rally car
No mate never had this run up on the dyno. Tbh it doesn't feel like it makes a great deal of difference to me, but then again your never going to feel the 7bhp it claims. I've got the grp n timing tool to alter the cams but haven't got round to doing it. I'm trying to find out if the grp n cams are different as I've been told the exhaust cam is different to oe.

Fancy selling the timing tool after you have finished with it?
 


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