Aftermarket Silencers

[Matt C]

Do aftermarket silencers make a noticeable difference on a stock pipe?

Also, I have a Uni filter and removed the lid with a stock exhaust. What jet would be good to use as a starting point for a plug chop?

 

[Herpderplol]

260 jet

They make a better sound, but louder. no performance gain

 

[Wifesblaster]

X2 on the 260 main jet. If you are interested in better sound and performance look into getting a used pipe and silencer. They can be bought for around $150. FMF is a cheap and popular exhaust. It makes good power in low and mid range. If you are looking for a top end pipe look into a right bend.

 

[Blaaster]

Yup #2sixty -#270 main.

IMHO DMC sounds the bestest!

 

[speedyslyder]

aftermarket def weigh less and they change the back pressure

 

[Blaaster]

/\ /\ /\ /\ They have no input to the kinetics though.

 

[Matt C]

Thanks for all of the replies.

Does it matter if the silencer and pipe are different brands?

 

[Blaaster]

Nope they can be different, the only pipe that I remember that is fussy is the FMF SST.

 

[Matt C]

Ok, thanks.

 

[Wifesblaster]

LRD will not interchange either.

 

[Blaaster]

LRD will not interchange either.

Is that the adjustable?

You learn something every day.

 

[Wifesblaster]

Well they made an adjustable and a non adjustable. I know the other silencers will not fit with the adjustable pipe. Not sure about the non adjustable pipe.

 

[Matt C]

270 seemed to have the best results in these cooler temps. Mine still has oil injection, so i'm curious to know if the oiling is still sufficient. I use Bel Ray 2T mineral oil and 90 octane ethanol free fuel.

 

[Blaaster]

Worry not about the amount of oil injected, the ratio will stay the same at approx. 20:1 which ever pipe you run.

Please perform a plug chop to confirm the #270 is the correct jet, just don't say it seems to be right.

So many folks have cooked a top end because they were just a tad on the lean side, take no chances, plug chop.

 

[Matt C]

Here the plug chop with the 270, I was thinking that the color looked ok, but I'd like to have you all ponder this one and let me know what you think. I haven't tried anything higher than a 270 thus far.

 

[Blaaster]

A personal preference of mine is to always run at least one jet size richer than optimum, if it were me I would opt for a #290.

A good to run plug.

My preference

 

[rich1]

Nope they can be different, the only pipe that I remember that is fussy is the FMF SST.

For the FMF SST pipe FMF makes a special silencer for that model only

 

[Matt C]

A personal preference of mine is to always run at least one jet size richer than optimum, if it were me I would opt for a #290.

A good to run plug....

Mine doesn't look anything like that. I'll change out to a 290 and do another plug chop. Thanks again for the info.