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ben41884
05-26-2005, 07:26 PM
I finally got THE 450r! Freakin awesome upgrade from the beast (300ex). Now ive heard the stock header is the same size as most aftermarkets and is just as good too. Let me know if you know anything about this. Is it worth spending so much more on a header? thanks
awj8074
05-27-2005, 08:10 PM
i have a full system but i really dont see any difference between the stock and the aftermarket header
ben41884
05-28-2005, 01:02 AM
thanks for the info, i'll probably just get the slip on for now and see what happens
05-28-2005, 02:36 PM
if you plan on keeping your engine stock then get the slip-on...if you are planning on aftermarket cams/bore kits then go ahead and get the full exhaust
450Racer
05-30-2005, 03:25 PM
it depends on how much money you're willing to put into it really. i had a HMF Bill Balance series slip on and it was a big difference over stock, i loved the sound, and the torque. after a year of riding it and saving up for my winter rebuild, i put the Big Gun EvoX Full series and it was a world of difference! you could punch it and you could wheelie it rolling easily in 3rd. you could barely get the front end up just punching it in 2nd before. i love it. there's so much more top end, and you can turn it down to 94db without sacraficing hardly any hp! i love it, i'd never get a different exhaust, i've ridden my buddies quads with a Pro Circuit, Yoshi, and Baldwin. The baldwin was real nice too but i'd still stick with a Big Gun. the Yoshi and Pro Circuit didn't even compare really. if you have an extra $200, get the full, you won't regret it!
shamisc
05-31-2005, 01:40 AM
If you're not going to do extensive engine mods, get the Dr.D! I couldn't be more satisfied!!:D :macho
T2RACING
05-31-2005, 02:18 PM
I agree I love my DR. D..
But ig enginge mods are coming I would go with a full system..
woodsZrider
05-31-2005, 02:27 PM
got a good deal on my slip on...
thats why i went with it.
i'm sure i will go full system later on..
T2RACING
06-01-2005, 12:07 PM
I am sure you will to there money bags
woodsZrider
06-01-2005, 01:49 PM
:confused: :confused:
your the money bags........
Mr. I went to buy a 20 dollar part and bought a HOUSER front end????????????????:cool:
T2RACING
06-01-2005, 01:57 PM
ha ha:D :cool:
drider
06-01-2005, 05:01 PM
If you got the money get a full system. If you dont got the money get the Dr.D slip on. Ok i got a Curtis Sparks racing Big core pipe. Full system. The head pipe is 1/2 inch bigger in circumference. So that will allow more air flow = more power. Ok with the Dr.D it's a great slip on, great power increase. Cheap price also!

Ok with the Sparks, run a 190 main jet
with a Dr.D slip on run 182 main jet.
06-01-2005, 05:55 PM
Originally posted by drider

with a Dr.D slip on run 182 main jet. is that with the lid on? I have a UNI filter and the lid on with no holes and a 124 main jet. Will I be ok or will this be lean?
T2RACING
06-01-2005, 06:02 PM
Yea what kind of airbox mod are you running with that jetting for the Dr. D
drider
06-02-2005, 12:32 AM
450R with DR.D Slip on . NO lid. jetted at 182. K&N Runs GOOD!

tried a 185 but ran like crap. So 182 is the jet to get.

124 seems a little to small. With any slip on need atleast 180 - 190 main jet..
06-02-2005, 12:46 AM
Originally posted by drider


124 seems a little to small. With any slip on need atleast 180 - 190 main jet.. my lid is on with no holes
T2RACING
06-02-2005, 07:18 AM
Where are you located at.. Just seeing around the same elevation as me...




Originally posted by drider
450R with DR.D Slip on . NO lid. jetted at 182. K&N Runs GOOD!

tried a 185 but ran like crap. So 182 is the jet to get.

124 seems a little to small. With any slip on need atleast 180 - 190 main jet..