I have a 2004 Night Train carbed. I am running the round Screamin' Eagle air filter (blue) and Vance and Hines pro Pipe (2 into 1) and a Dynojet Thunderslide kit. Per the instructions, I left the Pilot jet stock and am running the needle clip on the 4th groove from top. In addition, I went with a 185 main. The bike runs pretty good but the plugs look a little too clean to me. has anyone ran their needle on the 5th groove or used a bigger main (190?) or ran the Thunderslide kit with a bigger pilot jet (contrary to what the instructions say). We have pretty good air; my elevation here in east texas is about 450 ft. above sea level. Bike is stock otherwise.
Thanks!
Scott

 

Is the carb popping or the is popping through the pipes. If not It sounds like you are okay. But a little rich is better then lean. Take it to someone whocan run a dyno ( good )with a air fuel meter. to see what the a/f is doing under load the rpm/speed curve. Or should I say have someone tune it that knows what they are doing.

 

I would richen it up alittle by going to a 46 pilot. But then again I wouldn't be using the Dynojet kit. I'd stick with the stock parts and just rejet the carb.