Exactly what I'm about to find out as I'm going from the OS2104s myself.

I also have a couple 7 port OS that will be a nice comparison too.

Looking forward to sharing my results with you all

Saw the monza ran in, the picco also screams, but I like os better.
however, the most screaming exhaust is the one came with the one by Capricorn. Screaming like hell. Just like a Ferrari running a vet high rev in the low gear

See how we go, with the issues that Ive had and seen on the 2104s this could be a good alternative for myself.
We are now back in a snap lockdown so may not be able to race this weekend at the State championships, so piccos may have to wait again : (

heard from some online shop, they stopped to carry the 2104 due to its recent issue. they carry euro instead

Not surprised mate. I may get them also

what are the issues you had with the 2104 mate?

I think scratched pistons. there are complains all over the net.

As Roelof mentioned, scratched pistons during or post break in. I've had one myself.

My 2nd and 3rd 2104 seem to be okay post break in but until I run them in the car I don't know

during break in. and the break in time requires much longer than usual, not typical os easy and fast break in, normally around 2-3 bottles of fuels, the 2104 not broken in even more than 6L of fuels

Ok...interesting, thanks.

So people leaning out to early by the sounds of it.

Yes absolutely, I have found 5-6L to even be close to race tune.

I have started running my 2104s in on the prop bench.
Minimum of 2L before hitting the track

not seemed, i guess they probably didn't realize the temp dropped, and/or the piston was made tighter than before, as a result, it was flamed out at the end straight, then scratched the piston.

Loads of info on both the 2104 thread and FB

you mean the "quality" issue? too many scratched piston.
i remembered my 35plus21 and the NR PTA were having the scratched piston issues. in fact, i heard so many people having the issue at that time.

Any feedback on the Piccos?