is this normal

[foretrax]

Ok i installed my DASA a few days ago and i took the airbox lid off to try it out. i didn't rejet it but i wanted to see what would happen. it bogged out like expected so i tried to just put my lid back on and it runs like a raped date. its torquey as hell and it doesn't bog at all i tried revving the hell out of it and it just ran. Should i just leave my jetting alone and leave the lid on?

[OTMTRX]

Post up your mods and current jetting. You may well just be fine.

[Loud450man]

is the jets stock? other mods? jetting currently?

[foretrax]

everything is stock right now. there is a k&n filter in there that i'm going to replace with a uni-filter soon going to get a cam in the next 2 months probably

[OTMTRX]

If your jetting is stock at the moment.. you probably are in the ball park... bump your main at least size or two though with the dasa/K&N. Or take the air box lid off, re-jet and really open it up.

[foretrax]

sounds good thanks for the advice. i want to take the airbox off but i want to ride sometime this week so i figure i'll wait until next week to mess with the jetting

[Burke]

I wouldn't wait too long to get jetting right even with the lid on before you start really riding it... there isn't much harder on these engines than running them lean

[ridingred]

yeah but it will fine with the lid on, severely lean would mean it's gonna cut out on him when he tries to go.

 

if you decide to take the lid off we can suggest proper jets but we will need to know what year it is.

[foretrax]

It's an 08. Seems to be running great I don't think its running lean. I can check the plugs though

 

Sent from my DROIDX using Forum Runner

[Loud450man]

always rejet with pipe filter intake changes

[OTMTRX]

always rejet with pipe filter intake changes

 

What he said ^^ Didn't mean it to sound like you'll be fine as you are.. by "in the ballpark" I mean you are close, bump up a size or two and see how it runs.. you should actually notice the difference. Plug checks on 4 strokes are not very accurate.. and you need a new plug each time to do it anywhere near properly.

[Guest Phantom Z]

Rode with a guy this weekend that has basically the same setup only he is on an 05 and it has been rejetted. After hearing that DASA uncorked I think that is on my wishlist for sure!!

[foretrax]

[video=youtube;SjouUS1eVnE]

 

Heres a video i took last night i'll still rejet it but this is stock the way it runs

[ridingred]

haha you tipped it over! nice!

 

fwiw, my 05 came with a pro circuit slip on, lid on, and it had the stock main jet in it with no other jetting changes. Seemed to run great....then i pulled the lid and put a 175 main jet in (keep in mind this is an 05 so numbers are different), instant power! Now with the full pipe i'm running the HRC jetting which is a 185 main, lid off.

 

if i leave my lid on accidentilly after washing....it runs like crap.

 

If you go with the to the HRC spec jets you'll be in the ballpark, if you must run with the lid on you can get away with a couple jet sizes on the main because it really restricts flow!

[foretrax]

lol yeah i was riding circles around that grass then i said fuck it i'm getting the cam and wouldn't u know first time around and it tips lol i think the slick grass was gone there from me going around it over and over again. i want to take the lid off but i have to get a new lid with the outwears first. its way too wet where i actually ride. if you go to my youtube page and check out any green mans videos you will see what i mean. i feel the power already so i'm stoked to see what that pipe will do with an open lid and rejetted:rock:

[foretrax]

Well finally changed the main road a 185 and damn that dasa makes that 450 a torque monster. The only question I have is the jet kit I bought didn't have a pilot jet in it and it it kind of a bitch to start now. If I change the pilot will that help with starting?

 

 

Thanks guys

[DPCones]

185 is way too big if your bike is 06+. You need to be in the 160 range if your still stock

[foretrax]

185 is what dasa recommends in the specs they gave me and wouldn't the quad run like shit if it was that rich?????

[DPCones]

I know thats what DASA recommends, trust me it aint right. Ask anyone on here that runs dasa, even with my mods I run a 168

[alanbmx]

Same here they told me 185 maybe even a 195 out in glamis, when I had it dyno'ed I ended up at 168, 185 was way fat. my dyno chart is isn the dyno section comparing the 185 to the 168

[DPCones]

The reason they recommend we go so high is so they don't get blamed if your bike blows up after the install of the pipe. LOL

[OTMTRX]

I remember Alan's thread about the Dasa / Jetting, what him and DP are telling you is right.. 185 is too big. Try down in 162, 165, 168 ranges.. or get it dyno'd.

 

Just info.. it's the same as HMF recommending 48 pilot for 06+ with their pipes... see the number of threads about "Can't start when hot"

[foretrax]

Cool thanks guys if wht ive always heard is right the main only kicks in on the upper 1/2 of the rpms. If that's true is it the pilot that is the reason it is tough to start all the time?

[OTMTRX]

Main is after 1/2 - 3/4 throttle.. see diagram for what affects what..

 

Hard starting could be your valves / decomp, pilot, fuel screw, idle adj. Check your valves (see Ghotts info posted on here) set up your decomp. Then post up your current jetting if that doesn't work.. pilot should be 42 or 45 on 06+

 

http://www.offtopic.forum/uploads/imported/2012/05/calchart-1.jpg

[foretrax]

Thanks