Thanks Kenneth, I'll try that.
Do you sell the quiet core by itself?
Is it recommended to install one? I don't have sound/ noise restrictions, will I nottice a lot of noise decrease and power?
I don't recommend a quiet core inside a DASA exhaust. The quiet core decreases performance and canister packing life. We sell them separately
The Quiet core will restrict the exhaust, if you have no noise restrictions I wouldn't install it. The reduction in sound is not that much,I have 1 in case I get caught and I don't think I would pass a sound check anyway with it , I ride in Oregon.
The quiet core should bring it down to 96-97DB.
I guess I'll leave it without and see if I get use to it.
You should be aboard the YFZ with a helmet on it's normally the people around you who don't like loud exhaust.
Hi guys, looking for more advice. I think I still need to twist somthing. HEre is what I did:
I first installed the exhaust, ncvq needle (4th clip), air mix screw (2.5 turns), lid on. I did not have the jets so we take it for a ride with the stock jets.
I did feel a better performance in power, low end was good. When I got to 5th, wot, the gas was cutting so got to let go the throttle, also had some backfire when backing off the throttle. I still managed to beat my pals (every time), one raptor 660 and a Honda TRX 450R stock (just a k&N and no lid, quiet core or sparks arrestor).
This saturday I got to install the jets (165 Main, 45). Took it for a ride. I did not nottice any backfire when letting go the throttle but I still feel that the gas was cutting at max throttle (3rd, 4th and 5th shift).My friend (Honda TRX) was also there and changed his jets, he is still waiting for his exhaust (Dasa as well) but decided to change the jets since we had all the tools out, he went to a 170M and 48 (we pulled from his quad 128M and 42).
So, we went for a quick test, drag race. This time he beat me (3 out of 3). Other friends there told me that my quad was poping when accelerating (I did not nottice it). I went from 2.5 to 3 turns on the air needle. Got a little better- I think, according to what they said. Race again, lost again.
Next I took the lid, race again, beat him 3 out 3, not by much but got him. I was told that there was no popping at all this time.
Now, should I go up on the main? 170 as well? or should I remove the lid? I don't know if that would be a good idea as ther is a lot dust usually where go go, I do clean the air filter after each ride but just don't know if I should remove it.
Hope this all makes sense, sorry for all the questions, I'm still a newbie when jetting.
I would remove the lid, and bump it up to a 170 MJ. The lid is worth between 2-3 horsepower.
If you took the lid off and it ran better you are rich with the lid on. You would need to drop a jet size down if you run the lid.
True, I would also look at the spark plug for reference.
Instead of dropping one size on the main, could I just go up 1 notch on the needle to lower it and make it leaner? or dropping to 160 would be better?
I'm thinking about changing the lid to a K&N powerlid. But it just seems to much money for a lid. Anyone heard about this type of lids? Are they worth the money or maybe I worry too much about dust and should take the lid off and clean the filter more often?
Either way, I think i'm going to get my ass kick when my friend mounts his DASA.
Just remember to do one thing at a time, and don't get carried away changing multiple settings at once. If your determine to run with the air box lid try a 162MJ and leave the needle alone. I'd suggest cleaning the filter more often and removing the lid all together.
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