Theme Select



Forum Default

Permanently

Author Topic: Results for day at Crowe Performance.  (Read 1637 times)

0 Members and 1 Guest are viewing this topic.

Offline bazzer

  • XR Master
  • ****
  • Topic Author
  • Posts: 969
  • Town: Waterlooville
  • Country: gb
Results for day at Crowe Performance.
on: February 08, 2021, 01:43:38 PM
Bikes was at Crowe Performance with Phil Crowe on Friday. Bit of background I fitted a 2018 engine to my 2015 bike, fitted airbox from RR with variable height velocity stacks and a set of Akra headers.

Phil enabled the velocity stacks, enabled launch control, enabled pit lane limiter, removed the 80% throttle restriction at high revs (yes the ECU closes the throttle at the top end), turned off the exhaust valve, turned off my electronic suspention (gone K-Tech) and mapped it.

These are the results so far, runs well but still needs a little bit more mapping. It was the first one he had done on an XR so it took us all day to get things sorted.



Also started refitting the Metalic Matt wrapped panels.









#1

Offline RyanGTXR

  • XR Pro
  • ***
  • Posts: 276
  • Bike: KTM 1290 GT
  • Town: Notts
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #1 on: February 08, 2021, 02:04:11 PM
Saw the results on his FB page.

"80% throttle restriction at high revs"  . . . . . . . is this basically the rev limiter removed? or more of a wide open throttle to the existing rev limiter? What kind of difference would it make just having that done?

#2

Offline bazzer

  • XR Master
  • ****
  • Topic Author
  • Posts: 969
  • Town: Waterlooville
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #2 on: February 08, 2021, 02:28:25 PM
*Originally Posted by RyanGTXR [+]
Saw the results on his FB page.

"80% throttle restriction at high revs"  . . . . . . . is this basically the rev limiter removed? or more of a wide open throttle to the existing rev limiter? What kind of difference would it make just having that done?

No its not a rev limiter for the last 2.5K RPM the ECU limits the power by closing the throttle valves by 20% Not sure for the reason for it, could be to make the bike easier to ride or to make a bigger gap to the RR

Not sure what difference it would make with no other mods.


#3

Online Winger

  • XR God
  • *****
  • Posts: 2940
  • Town: Birmingham
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #3 on: February 08, 2021, 03:31:50 PM
I take my hat off to you cuz that’s a serious step into the unknown, some interesting figures that is for sure..what did he say about the A/F because that certainly needs some work or is that complicated because of variable velocity stacks.

#4

Offline bazzer

  • XR Master
  • ****
  • Topic Author
  • Posts: 969
  • Town: Waterlooville
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #4 on: February 08, 2021, 03:34:57 PM
The dip at the top end is the velocity stacks opening, it looks worse than it is as the bike is revving quickly past that point in the real world they open really quick and you don't feel it.

No it was just time on the fuelling, by the time we got everything done we ran out of time. Will have to wait another day.

Also to be fair thats only the 100% throttle run, the fuelling for the 10%,20%, 30%, - 80%  runs are a lot better, we just ran out of time.



Last Edit: February 08, 2021, 03:37:32 PM by bazzer

#5

Offline Belco100

  • XR Pro
  • ***
  • Posts: 163
  • Bike: Gen 1 Triple Blk
  • Town: Essex
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #5 on: February 10, 2021, 05:53:41 PM
Wow - big jump in top end power. Is the red line your bike in standard trim, standard exhaust etc? Not seen one break 170hp before  :085:

#6

Offline bazzer

  • XR Master
  • ****
  • Topic Author
  • Posts: 969
  • Town: Waterlooville
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #6 on: February 11, 2021, 07:27:16 AM
*Originally Posted by Belco100 [+]
Wow - big jump in top end power. Is the red line your bike in standard trim, standard exhaust etc? Not seen one break 170hp before  :085:

Its the first run of the day, so unfortunately not a bone stock run, it still has the headers and the airbox fitted. Airbox in an indeterminate state, fuelling off and the 80% throttle restriction not removed. Also running 800 less revs.

 

#7

Online Winger

  • XR God
  • *****
  • Posts: 2940
  • Town: Birmingham
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #7 on: February 12, 2021, 07:26:37 AM
What’s the plan, is the bike rideable or is it back to dyno for another session  :002:

#8

Offline bazzer

  • XR Master
  • ****
  • Topic Author
  • Posts: 969
  • Town: Waterlooville
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #8 on: February 12, 2021, 07:34:44 AM
Perfectly usable, the difference will be very subtle, I will get it done though. Also that's just the 100% throttle fuelling where we ran out of time. The 10%,20%,30%,40% is not the same. The low and mid throttle fuelling is spot on.

Still sorting out some suspension bits and bobs, will probably be a while before it gets a proper ride.


#9

Online Winger

  • XR God
  • *****
  • Posts: 2940
  • Town: Birmingham
  • Country: gb
Re: Results for day at Crowe Performance.
Reply #9 on: February 12, 2021, 07:44:26 AM
Interesting...get the ‘be a while’ since the KTM came off the dyno a combo of Covid and weather think it’s done about 8 miles  :021: