carb

[steve_154]

i haven't read all 21 pages, but can see in the pics posted on the first few that u used an 05 carb, anyone try the 06 or newer carb?? i've got an 06 400 w/ very little motor work, 11.5 comp piston stock bore, stage 2 cam, and some head porting, the only problem i have w/ this machine, is that i'm used to running a fast revving 450, does adding this help in that way?

[drew416ex]

I dont know if anyone is running it but the 06 and newer are fcr flatslid carbs. If you can get it to bolt up it should really help out. Also a good aftermarket exhaust will really wake it up too. The stock exhaust is holding that piston and cam back.

[steve_154]

i've got an hmf full system, and twin air intake cage set-up. was told to scrap the hmf and buy a sparks pipe by laz at gt thunder, but thats a huge loss to take haha

[drew416ex]

yeah the sparks isnt cheap, but its the best.

If I already had an HMF full system I wouldnt bother switching to a Curtis Sparks full system. The Sparks is better no doubt but the HMF is so close unless you had the money to just throw away for a little more power idk I wouldnt do it. The only thing I can see that would be worth the change is if you had a monster 400ex like a crazy 440 or 460 where you would need the Sparks X6 big core.

sparks is alot better than HMF:rolleyes: