NFLR needle jet in a 06 - results


16 replies to this topic
  • Ga426owner

Posted November 06, 2006 - 07:39 AM

#1

I did some testing last weekend after installing the NFLR needle in the 06. This is the stock needle for the 07. DRD recommends this needle to clean up some of the issues with 06 jetting...needle jet cost 5-10 dollars
my results - with NFLR on 4th clip...45pj, 168mj...just at/ or under 2 turns out - fuel screw...temps about 60-67
Much crisper throttle response - I ran U4 and this needle works much better than the stocker
Fuel screw adjustment - seemed much better, more responsive to adjustment leaner/richer....absolutely no popping on decelleration.

the NFLR is staying in my bike...from this point on..installation was a 10min affair - as you have access to top of carb from the top of the bike w/o removing bracing...just loosen front airboot adj allenhead and twist the carb to the left side of the bike slightly..with gas tank /seat removed

  • Ranger18

Posted November 06, 2006 - 09:17 AM

#2

Glad to hear it, I was thinking about trying the NFLR.

  • Blue4Ever

Posted November 06, 2006 - 12:07 PM

#3

In you post you state needle or needle jet as stated on the thread title? The needles were NFLR for both 05 and 06, but the needle jets were different. Needle JET right?:mad:

  • mx369

Posted November 06, 2006 - 12:20 PM

#4

I did some testing last weekend after installing the NFLR needle in the 06. This is the stock needle for the 07. DRD recommends this needle to clean up some of the issues with 06 jetting...needle jet cost 5-10 dollars
my results - with NFLR on 4th clip...45pj, 168mj...just at/ or under 2 turns out - fuel screw...temps about 60-67
Much crisper throttle response - I ran U4 and this needle works much better than the stocker
Fuel screw adjustment - seemed much better, more responsive to adjustment leaner/richer....absolutely no popping on decelleration.

the NFLR is staying in my bike...from this point on..installation was a 10min affair - as you have access to top of carb from the top of the bike w/o removing bracing...just loosen front airboot adj allenhead and twist the carb to the left side of the bike slightly..with gas tank /seat removed


Have you be sniffen the U-4? Both of my yz 450s came with the NFLR in them!DUHH

  • grayracer513

Posted November 06, 2006 - 12:52 PM

#5

OEM jet needle on an '06 was an NFPR.

  • urla

Posted November 06, 2006 - 01:54 PM

#6

I vent to NFPQ-5 (the next richer jet needle from stock) to
get ride of the popping.
You went leaner (.5 clip from stock) .. strange carb on this bike.

  • grayracer513

Posted November 06, 2006 - 02:37 PM

#7

The jet needle has almost nothing to do with decel backfire. Most of that is caused by the pilot jet.

  • Ga426owner

Posted November 07, 2006 - 07:35 PM

#8

Have you be sniffen the U-4? Both of my yz 450s came with the NFLR in them!DUHH



I dont think so.............not stock in 03-06

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  • Ga426owner

Posted November 07, 2006 - 07:37 PM

#9

The jet needle has almost nothing to do with decel backfire. Most of that is caused by the pilot jet.


agreed Greyracer...I did not mean to incuate that the NFLR will cure this...the PJ and correct air/fuel screw will fix this...
just posting my results as they seemed to match what DRD preaches...

  • aford541

Posted November 07, 2006 - 07:42 PM

#10

I ran the NFLR needle in the 06 but with a 48 PJ (2 Out ) power nows front and rear with the TPS disconnected with a 165 main on 91 octane union 76 with exellent results.

the 07 has
45 (3 Out) I think I need a 48 also
NFLR
165
Power nows & tps disconnected

The thing rips

  • DPW

Posted November 07, 2006 - 07:59 PM

#11

Been running the NFLR 4th clip for a month now...nice crisp response


summer 45/165
winter or under 80 degreess 48/170....so far

  • Wyatt

Posted November 07, 2006 - 08:45 PM

#12

Thanks for the info guys.

I may give that a try.

  • red7

Posted December 17, 2006 - 04:01 PM

#13

I did some testing last weekend after installing the NFLR needle in the 06. This is the stock needle for the 07. DRD recommends this needle to clean up some of the issues with 06 jetting...needle jet cost 5-10 dollars
my results - with NFLR on 4th clip...45pj, 168mj...just at/ or under 2 turns out - fuel screw...temps about 60-67
Much crisper throttle response - I ran U4 and this needle works much better than the stocker
Fuel screw adjustment - seemed much better, more responsive to adjustment leaner/richer....absolutely no popping on decelleration.

the NFLR is staying in my bike...from this point on..installation was a 10min affair - as you have access to top of carb from the top of the bike w/o removing bracing...just loosen front airboot adj allenhead and twist the carb to the left side of the bike slightly..with gas tank /seat removed


What elevation are you at?

  • Ga426owner

Posted December 17, 2006 - 05:53 PM

#14

What elevation are you at?



1800-2000ft

  • red7

Posted December 17, 2006 - 08:54 PM

#15

I'm at sea level with temperatures in 60-80 range in winter with moderate humidity and 90 range in the summer with high humidity. I'm debating between 48 168 and 48 170. Is the NFLR needle worth it? I heard changing from the stock to the NFLR will negate the 48 pilot.

  • DPW

Posted December 18, 2006 - 03:45 AM

#16

I'm debating between 48 168 and 48 170. Is the NFLR needle worth it? I heard changing from the stock to the NFLR will negate the 48 pilot.



Why don't you just buy all the jets listed above? That way you have them and you can adjust for your situation. Not all bikes are the same...what works for me may not work for you...

  • red7

Posted December 18, 2006 - 09:45 AM

#17

Why don't you just buy all the jets listed above? That way you have them and you can adjust for your situation. Not all bikes are the same...what works for me may not work for you...



Yes, I plan on getting a 45 and 48 pj and 165,168,170 mj. I was just trying to find out if the NFLR needle was a unanimous favorite or not. I'll pick one up just in case.





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