Funny idle with new 2 bros exhaust

[BenderBT]

Just installed new two bros. exhaust and pcv with marthy's adv rev b map. and drilled out airbox.
First start up the idle seemed like it wanted to pulse right around 1000. This seemed a little low and eventually evened out to around 1300 but when i took it out for first ride it seemed to idle low again with surging idle kind of like a harley sounds if you know what I mean. Thanks in advance for advice or if this is normal.

 

[MistahT]

To me it sounds like an intake or exhaust leak. Maybe the exhaust gaskets at the top of the header? If you over tighten maybe they would warp and not seal right. Did you do the block-off plates on the airbox?

 

[98Deathmage]

Just installed new two bros. exhaust and pcv with marthy's adv rev b map. and drilled out airbox.
First start up the idle seemed like it wanted to pulse right around 1000. This seemed a little low and eventually evened out to around 1300 but when i took it out for first ride it seemed to idle low again with surging idle kind of like a harley sounds if you know what I mean. Thanks in advance for advice or if this is normal.

If a 4 cylinder is sounding like a harley, there is likely a compression issue with one of the cylinders. Make sure to check what MistahT suggests and if it persists, i would take it to a professional mechanic.

 

[xleeb0y13x]

Gonna agree with MistahT also. After installing mine I had something similar sounding. Took everything back apart resealed retightened the whole nine yards and it was gone.


Sent while running with scissors.

 

[BenderBT]

Turns out I just needed to add a little fuel to the map at idle. Works good now. Thanks for the replies though

 

[Marthy]

Turns out I just needed to add a little fuel to the map at idle. Works good now. Thanks for the replies though

How much?

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[Therzdae]

Yes how much adjustment, I just got my two bros and juice in today so curious here.

 

[BenderBT]

Well using the advrev b i added about 3 percent in column zero in 1000,1250,1500 seemed to even out but i tried the sport rev a witch has -4 in those columns and it runs great also so im a little confused as whats right or wrong.

 

[LocoLechero]

i was having some issues with my 2bros and jbpro setup - i switched to the 2bros 2nd preset map and dialed down my low and mid range 10% that seemed to smooth things out - also was smelling some rich gas smell but that also went away after the adjustment

 

[cobaltitaliano]

do you think your adjustments were off cuz u drilled out the airbox?