Cant keep up with a Z400
#1
Cant keep up with a Z400
Hello. I recently upgraded my 2004 DSX with a QRS slip on muffler from HMF. I also have a UNI filter.
I run with the lid on. I started jetting with 175 main, but it didnt like it (too rich), went down to 170 and it felt right.
The problem is, after this mods, my quad cant beat a stock z400 on a 300ft race. It stays preety much with it until the very last moment. We switched quads with same results. Is this right? Or do I have a problem
I have 22 Razr with stock gearing.
I dont do drags, I do mostly desert racing and some motocross, but am concerned that I am not getting the maximum from this mods.
Any suggestions?
BTW, the QRS is a very quiet pipe, which HMF states it only looses 10% ovarall compared to the sport series.
Thanks
I run with the lid on. I started jetting with 175 main, but it didnt like it (too rich), went down to 170 and it felt right.
The problem is, after this mods, my quad cant beat a stock z400 on a 300ft race. It stays preety much with it until the very last moment. We switched quads with same results. Is this right? Or do I have a problem
I have 22 Razr with stock gearing.
I dont do drags, I do mostly desert racing and some motocross, but am concerned that I am not getting the maximum from this mods.
Any suggestions?
BTW, the QRS is a very quiet pipe, which HMF states it only looses 10% ovarall compared to the sport series.
Thanks
#2
Cant keep up with a Z400
What is the weight difference between you and the other rider? I am 330 on a DS and my friend is maybe 200 on a Z400, and I can get him by a couple lengths in 300 feet. I run the HMF sport, and can't comment on the QRS, but it seems to me that you should be able to take your friend easily. I wish I had an answer, but maybe try checking your plugs to really know if your jetting is on. Good luck.
#3
Cant keep up with a Z400
Hey DSlider,
I know what you mean... I did a bunch of mods to my bike and I was just able to keep things neck and neck on a race with a YFZ450 as I my DS was way out of tune.
I caved in and had the bike Dyno tuned and gaind like 6 horse to the rear wheels you could see the power was dropping where it should have been strong then pick back up again ....
Now I am ready to RUN with the Big Dogs...
Proper tuning makes all the difference in the world ... enought to pay for it I guesssssss
[img]i/expressions/face-icon-small-smile.gif[/img]
I know what you mean... I did a bunch of mods to my bike and I was just able to keep things neck and neck on a race with a YFZ450 as I my DS was way out of tune.
I caved in and had the bike Dyno tuned and gaind like 6 horse to the rear wheels you could see the power was dropping where it should have been strong then pick back up again ....
Now I am ready to RUN with the Big Dogs...
Proper tuning makes all the difference in the world ... enought to pay for it I guesssssss
[img]i/expressions/face-icon-small-smile.gif[/img]
#5
Cant keep up with a Z400
ILivSD, how was your jetting after the dyno tune? Did you mod the carb (vacuum holes?). Are you running with the air lid on?
I weight 200lb, and my friend 150lb. But the thing is, when we switched quads, the result was the same.
I feel the engine takes too long to rev. I does get there, and feels strong, but it takes a while to hit the rev limiter.
I weight 200lb, and my friend 150lb. But the thing is, when we switched quads, the result was the same.
I feel the engine takes too long to rev. I does get there, and feels strong, but it takes a while to hit the rev limiter.
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