I have a 05'CRF450X, put on a Q4, opened the air box, JD kit with 170 main and red needle on the 2nd clip....problem now is that I have lost all the low end power, mid and upper hit is much better. 3200 to 5000 elevation, 50 to 80 degrees. Should I change the needle or do I need to go with a new leak jet?
More Carb Questions...Eddie are you out there?
Started by Unzie, Nov 01 2009 03:47 PM
1 reply to this topic
Posted 01 November 2009 - 03:47 PM
I have a 05'CRF450X, put on a Q4, opened the air box, JD kit with 170 main and red needle on the 2nd clip....problem now is that I have lost all the low end power, mid and upper hit is much better. 3200 to 5000 elevation, 50 to 80 degrees. Should I change the needle or do I need to go with a new leak jet?








