t 700 head pipe

[pat fitz]

does anyone know if i stripped the cat out of the original head pipe and just left the sensor would it cause any problems

[2 Wheel DynoWorks]

Yes, you will need an ECU flash if you remove the catalyst material from the stock header.

 

In layman's terms, this will dramatically increase airflow, and the ECU has no way of knowing to increase fuel volume without a change to the mapping. We have mapping that will address your specific exhaust modification and dramatically improve performance!

 

For the moment, you can purchase the flash for the T7's using this link from our FZ/MT-07 flash:

https://2wheeldynoworks.com/shop/ecu-flashing-service/15-17-yamaha-fz07-mail-in-ecu-flashing-service/

 

Be sure to use the coupon code "forum member" to save $25!

 

-2WDW

[Cruizin]

We ran into this on fz07.org (same engine) and yes, when you pull.the cat out of the header or change the exhaust on the CP2 engine, your engine actually loses power (proven on Dyno) for the reasons stated above. It bogs, it's noticeable and cracks loudly when you release the throttle. Flames out the exhaust too when you release the throttle. 

 

When winter arrives and you can't ride the bike anyways, send your ECU to @2 Wheel DynoWorks because they know the CP2 mapping better than anyone else. All the other tuners are just "trying" to copy their tune. 

 

Or, you can live with the lower power and try not to start a fire when the exhaust flames out. The ECU needs to be programmed to deal with the increased air flow on Fuel Injected computerized engines.