sc-project exhaust problem ???

[Chicane46]

hello everybody i have a problem with my sc-project exhaust the oval carbon . he pull less then before what i'm doing wrong , must i put a other airfilter mayby ore is their a other problem. sorry for my english i leave in belguim   grtz

[Roadsprocket]

Has the bike been ran on a dyno and tuned for the new exhaust?

[merlin]

Just changing the can on one of these shouldn't make much difference to the engine response, SC Project's own dyno graph claims a small improvement to the engine output. Unlikely to need remapping or a Power Commander unless you're changing the headers etc.
Possibly a lambda sensor problem? We need to know more about the bike, Chicane....

[Troppo]

Mine works perfectly.  Are you sure that it is on tightly?

[JTL]

 I read that the XR has learning ECU, so it might take a few miles to "learn" the new exhaust??

[smithy]

Originally Posted by JTL

I read that the XR has learning ECU, so it might take a few miles to "learn" the new exhaust??

15 &16 (Euro-3) are partly learning ECU, 17 & 18 (Euro-4) less so. If headers are fitted to a Euro-4 it is recommended to have a separate fuel module like the Rapid Bike EVO or PC-5 fitted or an ECU remap.
They will still run but not to their best without a fuel module or remap.

Smithy. 

[bazzer]

and none of them "Learn" at wide open throttle.

Its only a little bit of fuel trim and if the ECU was programmed to be lean as certain rpm/throttle openings for emissions/noise, its still going to be the same. Getting it mapped is the way to improve the drivability etc.

[Troppo]

You only need to remap if you remove the cat and/or change the headers.

To the OP - there must be something wrong with either the installation or the can, as they work perfectly out of the box.

[bazzer]

That is true Troppo, the end can should not change the breathing of the engine much at all. So in fact it should run OK without any "learning"

I thought I was on the Delkevic thread when I posted :-)

[merlin]

As suggested, the OP needs to tell us more about the bike, eg anything else that's different.