Does anybody have a real snappy/hard hitting map for 2014 yz450f that has the full ti fmf exhaust system?


5 replies to this topic
  • Braaap121v

Posted July 23, 2015 - 10:14 PM

#1

image.jpg

  • Bobby WR 450 lover

Posted July 23, 2015 - 10:37 PM

#2

I have the same full exhaust on my 2014Yz, I have it set to the Travis Preston map. It's nice. That bike seriously made it pull in the top end. It pulls hard down low too. 1-4 gears the front wheel comes up easy. Only performance mod I have besides brakes.

  • jcm3

Posted July 24, 2015 - 08:43 AM

#3

I know you said you have a FMF exhaust and not DRD, but I'd imagine the maps for exhaust have to be pretty close.

 

I just bought a used '14 with a full DRD exhaust, and found a good article where MXA said that they tweaked the DRD maps for something that they liked better, but didn't give specifics.  I e-mailed them and here's what Erin from DRD replied back with as recommendations for their exhaust, and a blurb about my question and their answer about that mapping.

 

Fuel..........Ignition

-2+1-1......0 0 0

-2-3-4......+4+4+4

+1-7-5.....+4+4+4

 

I mentioned that it seems that most think it's pretty lean already, so is it safe to go leaner?  Here's her response, which I thought was a good response.  I like that they tested it on a dyno with an 02 sensor, as I'd imagine most don't. 

 

"The direction MXA goes is richer, mostly to mellow the bike out at low throttle angle. We actually go slightly richer right at the low throttle, and then the bike gets rich through the middle. The map with the -7 at one particular throttle point was a map we came up with on the Dyno with an 02 sensor in the head pipe, using a complete DRD exhaust. There was a rich spike that kept getting better as we pulled fuel out.

 

We have raced many events with this setting installed.

 

Remember that each number is just a number; it is not like we put 7 sizes smaller pilot just in reference to a carburetor. "

 

Here's what MXA came up with after tweaking the DRD map:

 

Fuel..........Ignition

+3+3+3......+2+2+2

+4+4+3......+3+3+2

+4+4+3......+2+2+2

 

I think I'll try both to see how they feel.  DRD said theirs is more aggressive and has more of a hit.


Edited by jcm3, July 24, 2015 - 08:44 AM.


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  • Braaap121v

Posted July 24, 2015 - 08:10 PM

#4

I know you said you have a FMF exhaust and not DRD, but I'd imagine the maps for exhaust have to be pretty close.

I just bought a used '14 with a full DRD exhaust, and found a good article where MXA said that they tweaked the DRD maps for something that they liked better, but didn't give specifics. I e-mailed them and here's what Erin from DRD replied back with as recommendations for their exhaust, and a blurb about my question and their answer about that mapping.

Fuel..........Ignition
-2+1-1......0 0 0
-2-3-4......+4+4+4
+1-7-5.....+4+4+4

I mentioned that it seems that most think it's pretty lean already, so is it safe to go leaner? Here's her response, which I thought was a good response. I like that they tested it on a dyno with an 02 sensor, as I'd imagine most don't.

"The direction MXA goes is richer, mostly to mellow the bike out at low throttle angle. We actually go slightly richer right at the low throttle, and then the bike gets rich through the middle. The map with the -7 at one particular throttle point was a map we came up with on the Dyno with an 02 sensor in the head pipe, using a complete DRD exhaust. There was a rich spike that kept getting better as we pulled fuel out.

We have raced many events with this setting installed.

Remember that each number is just a number; it is not like we put 7 sizes smaller pilot just in reference to a carburetor. "

Here's what MXA came up with after tweaking the DRD map:

Fuel..........Ignition
+3+3+3......+2+2+2
+4+4+3......+3+3+2
+4+4+3......+2+2+2

I think I'll try both to see how they feel. DRD said theirs is more aggressive and has more of a hit.




Ok cool. Let me know how the two maps go because I won't be able to ride until another month or two.

  • 15thumper

Posted July 25, 2015 - 06:36 PM

#5

I use both of those maps on my 15 the leaner one hits early and hard, the mxa one is great too hits a litte later and pulls hard I use the mxa one in single track and the drd in more open tracks

  • Braaap121v

Posted October 27, 2015 - 01:56 PM

#6

This map is snappy in the bottom and rarely pops

Fuel. Ignition
2 2. 2. 0. 0. 0
1 1. 1. 0. 0. 0
1. 1. 1. 1. 1. 1

Edited by Braaap121v, October 27, 2015 - 01:59 PM.






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