exhaust question

Message

c41xracer · #1 Post by **c41xracer** » Mon Jan 10, 2005 12:00 am

is there any difference in any aftermarket exhaust system for the Dale.What im trying to ask is ....like the other 450's do aftermarket exhaust perform differently or because of the fuel injection do they all perform the same??

dawzie · #2 Post by **dawzie** » Mon Jan 10, 2005 1:01 am

When ever an exhust is changed you should always rejet, in our case you need a D&M kit and lap top.

Derno24 · #3 Post by **Derno24** » Mon Jan 10, 2005 1:02 am

They do perform differently, but that is due to the length of the can. HMF appears to be the longest. I think they give a good overall performance increase. The TC pipe has good bottom end hit and decent overall performance.

c41xracer · #4 Post by **c41xracer** » Mon Jan 10, 2005 3:25 am

the reason im asking i now have a hmf Ti exhaust and was looking in a summit racing catalog and saw a 4'' supertrap(looks like a tc)and could be put on my head pipe with no mods.Would an exhaust being this short hurt anything??

Derno24 · #5 Post by **Derno24** » Mon Jan 10, 2005 4:07 am

No as this is the Tc exhaust. A nac' map would be best.

c41xracer · #6 Post by **c41xracer** » Mon Jan 10, 2005 11:18 am

i have a moto map right now.......guess ill have to buy a d&m

Derno24 · #7 Post by **Derno24** » Mon Jan 10, 2005 2:43 pm

You don't need a d&m yet as the moto map will work with that exhaust.

Dawzie what is this rejet thing you speak of?

candyassmiler · #8 Post by **candyassmiler** » Mon Jan 10, 2005 7:33 pm

he made it up.

dawzie · #9 Post by **dawzie** » Mon Jan 10, 2005 9:37 pm

Dawzie what is this rejet thing you speak of?

I was just trying to say that when you change the way the motors can breath you should check your settings. You may have to richen it up a bit.

DIRTRACIN · #10 Post by **DIRTRACIN** » Wed Jan 12, 2005 2:28 am

dawzie is right. when i put my hmf system on i had to lower my flowrate 100 cause it was back firing