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[hudd]

anybody have experience with these,sound,performance etc. thanks

[AXIL]

hudd, i have the thunder header on my 103,not the Harley package,sounds great but a little on the loud side.
performance is very good but some say there is a power dip around 2000 to 2500 rpm. mine does not have the
dip and if it did i don't care much about that range.  i like it a lot.       axil

[hd-dude]

The Thunder Header true duals DO NOT work anywhere near as good as the original 2-1 Thunder Header. They are also Very Loud, much more so than the 2-1. Also fit and finish on them is a crap shoot.

[AXIL]

 by the way ,mine are the 2 into1. i thought thunder header true dual was a miss spelling.

[hd-dude]

by the way ,mine are the 2 into1. i thought thunder header true dual was a miss spelling.

TH came out with the true duals a year or so ago to compete with the  other duals on the market.

[Fired00d]

Don't they have the 2-1 with a falsie (ghost pipe) too?

 
Ride Safe,
Fired00d
 

[AXIL]

d00d, yes thay do , dawg had them on one of his bikes.  axil

[Fired00d]

Thanks, I thought so.

 
Ride Safe,
Fired00d
 

[badhorse]

FWIW, I put Thunderheader true duals on my 05 SEEG along with SERT and SE air filter. Dyno tuned out to 102hp and 106tq. I thought it ran pretty well. Too loud for me as much of my riding is long distance touring. My ears are still ringing. 

After riding from Vegas to Boston I switched them out for a set off Monster ovals. Less noise. Did not dyno the Monster ovals, bike runs fine. My butt dyno tells me I lost a little power at high rpm . Bike still runs strong, probably a little rich, but still runs really well.