Okay so I got my pipe in the mail! It's the Proma Style! circuit from 1977 for 77 bucks.
Okay, If you have a Polini launch lever... Blow your dick off now. Cause you are going to have to remove your ignition to take the lever off, in order to get to the hardware on the exhaust hanger. If you don't have a Polini launch lever, the only annoyance you will be left with is your kick stand... You will have to lose it in order for your bike to fully variate... Another hitch i ran in to was the rear mount on the pipe, was a little off. So I just beat it with my 1 1/4 wrench till it was where I wanted it.
I'm using this with the stock cylinder, so I was glad to see that it came with both threaded and flange mount like in the picture on the website. That was one of the reasons I settled on this pipe. Well that and the price. I tried to read up on this pipe, but I couldn't really find anything concrete, so I said fuck it and bought it anyways. I did read that the Faco Circuit had a super hard to remove restriction in the chamber, and that the performance isn't that great.
Okay on to the pipe. It looks great, the baffle is riveted on so you can repack if you want. I have been thinking about chopping the baffle down shorter to keep my kick stand, but I think I'll just fabricate an acceptable kickstand. This pipe is a little quieter than the Puch Proma Circuit (with baffle intact). Besides massaging the rear mount into place, it mounted up just fine.
The pipe has great low end, and a little better up top too. It's not a huge help up top. I have had my 17 bing jetted rich and since 1977 sent my jets from a different wearhouse, I haven't rejetted yet. My plug is a tad lean, but it should be fine till they come in. I'm not really riding it any where till I rejet. I'll get back you after I rejet.
All in all it's a great pipe for a stock rocker. I gps'ed it at 43 on flat with my current set up! I'm supper happy with it. Here are some pics for you guys!
Oh, and pro tip. <lol If you remove your kickstand you will have to lean your bike to lock it up, work on it, whatever. In the first picture you can spy the strip of t shirt wrapped around the grip and break lever. No tying necessary just cut a strip about foot and a half and squeeze the break in and wrap it over its self and tuck it in. This will keep your break locked, and while leaning it will not roll and fall over and make your life a living hell. It sounds trivial, till you have been pushing and pedaling your shit in the heat and out of breath, a simple thing like your bike not sitting still while you check the plug can send you through the fucking roof, lol.