HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
avlisj

new wr 450

9 posts in this topic

Just picked up my new 2014 wr450. And already have a question. About the end cap mod. I took off the end cap and removed the tail pipe assembly, leaving the spark arrestor in place and replaced the end cap. There is now that open chamber between the spark arrestor and the exit of the end cap. Can that cause any problems. Do i need to buy the $50 end cap from FMF. noise level as it is is not bad. I drilled out the smaller insert from the tail pipe section, but the resulting tail pipe is still significantly smaller than the spark arrestor diameter and end cap diameter, so I left it out completely. Im assuming bigger is better for letting it breath, of course with noise being considered. Sooner or later i plan on the gytr fmf muffler, but for now is this cool.

  Also is the competion ecu a change in the current ecu or does it just allow you to plug in the yz map changer (wich is another $300)?

  And, is the 2.1 fuel tank 2.1 gallons of fuel or 2.1 minus the space a fuel pump takes? What kind of range you getting with stock tank?

Got a couple of rides already and love it, only have the free mods done and is plenty powerful.

 

anybody want to buy a 2002 rm 250

 

thx

Share this post


Link to post
Share on other sites

2.1 gallons total.  I get between 23 and 26 mpg with a rich map and FMF muffler.  This is probably worst case.  Leaner maps  make a big difference.

 

You can get the Tuner and the GYTR muffler much cheaper on Ebay or Amazon than from a dealer.

 

Don't know about the muffler.

 

I read that the new ecu is programmed different but can't confirm. 

Share this post


Link to post
Share on other sites

Thx

Yea saw that on eBay

Are you saying 2.1 gallons of fuel ?

Pull up to gas station and pump 2.1 gallon into empty bike?

Thx again

Share this post


Link to post
Share on other sites

  Also is the competion ecu a change in the current ecu or does it just allow you to plug in the yz map changer (wich is another $300)?

 

The competition ECU comes with all 0's, whereas the stock ECU is locked with a bunch of negatives. The competition ECU is a HUGE improvement over stock even without tweaking it with the tuner.

Share this post


Link to post
Share on other sites

The competition ECU comes with all 0's, whereas the stock ECU is locked with a bunch of negatives. The competition ECU is a HUGE improvement over stock even without tweaking it with the tuner.

 

The Comp ECU is programmable with either the:

1) GYTR Power Tuner, for Fuel Injection (FI) fuel / ignition map setting changes, or

2) The OEM / Aftermarket Diagnostics programmer, for adjusting CO / Idle settings (for enrichening a too lean idle setting).

 

The stock OEM ECU is not programmable.

 

The two devices mentioned above can be purchased aftermarket, and as you can see, do different things.

(1) allows for "carb like" adjustments (like needle / orifice setting changes), from ride to ride.

(2) allows for what becomes a one-time change to Idle / CO emissions settings. You set it once (to "7 or 8") and forget it. Bump up from that if you need a really rich idle mixture (for racing maybe?).

 

The (2) device, the Diagnostics tool, apearrs to be similar to a CAN bus reader. It has other useful features, but as far as I know, no one has mapped out what they are yet.

Share this post


Link to post
Share on other sites

The Comp ECU is programmable with either the:

1) GYTR Power Tuner, for Fuel Injection (FI) fuel / ignition map setting changes, or

2) The OEM / Aftermarket Diagnostics programmer, for adjusting CO / Idle settings (for enrichening a too lean idle setting).

The stock OEM ECU is not programmable.

The two devices mentioned above can be purchased aftermarket, and as you can see, do different things.

(1) allows for "carb like" adjustments (like needle / orifice setting changes), from ride to ride.

(2) allows for what becomes a one-time change to Idle / CO emissions settings. You set it once (to "7 or 8") and forget it. Bump up from that if you need a really rich idle mixture (for racing maybe?).

The (2) device, the Diagnostics tool, apearrs to be similar to a CAN bus reader. It has other useful features, but as far as I know, no one has mapped out what they are yet.

All great info

Thanks

How bad does the gas mileage go going from stock to all 0's with the comp ecu

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0