hello I got a new Q4 but then I realeized that perhaps it is not fitted for fuel injection version. Do you know how can I solve this problem ?

thanks
ciao

Renato

 

Are you talking about the possible fuel issue of running to lean with the new pipe ?

If so, you'll need a power commander or some other piggy back fuel programmer.

 

I don't know as I haven't seen an efi bike but you should have an O2 sensor in the head pipe so as long as you have it in place a slip-on should be ok. Try it and see how it runs, that's the magic of efi as it should tweek your tune some on it's own.

 

I have a 2009 EFI, but went with the Two Bros muffler.

You need to drill a hole into the new exhaust, weld a threaded bung over that hole, and move your O2 sensor to the new bung. Make sure the bung threads match your O2 sensor in the stock exhaust.

It's best to install the new exhaust on the bike and then decide where to weld the sensor bung so the O2 cable will reach the sensor and doesn't collide with the frame or wheel travel. My bung was welded about 3" ahead of the muffler but it's probably best to locate the O2 sensor in the same area as on the OEM exhaust.

 

thank you guys
Ttakata I would follow your suggestion.
In this case may I have to make some further modification or I have to let stock air filter and stock air filter box included the original snorkle ?

thanks

 

You also have two other options less complicated:
1 - Install the oxygen sensor under the seat, in a place where the resistance has not damaged by the heat they generate.
2-Remove the probe connector bridging two 0'25V resistors and 330 Ohm.

 

Is is true that the FMF needs to be repacked eventually, while the LeoVince does not? Also the LeoVince comes with the O2 sensor hole, yes?

Thanks.

 

Ok. LeoVince come with the O2 sensor hole.

 

I don't know anyone with the LeoV exhaust so I cannot comment on it, but from what I saw the different insert tips are a nice feature.
My Two Bros is so loud I regret buying it.

My O2 sensor is under the seat, it's behind the airbox but ahead of the muffler.
There's not much room to put it anywhere else because the sensor sticks out of the exhaust pipe about 2-3 inches.