Maybe GaryC660R but I diialed in my E-series perfect and even added 6 for discs to 18 and jetted perfecty for that but when I went to the Yoshi from that you could tell the Yoshi had a bigger head pipe and mid pipe compared the the full W/Bs. I'm in NO WAY trashing the W/B but its a bottom to mid pipe system just doesn't flow as much as the other pipe systems I have tried. For woods running that would be the only pipe i'd run but for max HP there are more flowing pipes out there.
Pat

 

Pat, I appreciate your opinion...how do you like the Alien?

 

I like it alot now but when i first tried it I didn't , it reved way too slow and made each gear way too long but I'm postel on jetting and I was too lean and when I bumped it up wow huge power increase
I love it now lots of power everywhere the best pipe for a stock bike so far that I have tested, the only other that might be there is the Sparks but i have not tried it. If your going to FSWs you can try mine
Pat

 

I won't be making it, but do very much appreciate the offer.

 

Pat - what jets, clips, airbox mods are you running with the alien. My buddy just got his pipe this weekend, he's running 3rd clip, 148/150, no lid w/ proflow, and it has a flat spot at the top end.

 

Weasle I'm at 5200 feet so I'm running 144/146 no lid 4th notch on the needle and I jetted mine for Glamis with 148/150 but that might not be enough so I might have to run my lid. I doint have bigger jets to go bigger at Glamis so thats my set up But I have not tried it yet. Your friend probably has to go fatter 150/155 Dynojet mains and lower that clip on the needle the Alien mid range wants it and when its dialed in WOW nice huge power everywhere
Pat

 

Pat I think we are pipe junkies, I am going to try the x-6 next!!!!!!

 

YUP I like trying new pipes out a see what they do and the differences. I might keep this one awhile I like it alot and it has crazy power unless I see a better pipe set up at FSWs on a stock raptor. But you never know[img]i/expressions/face-icon-small-smile.gif[/img]

 

Thanks for responses. I raced on Sunday and it performed great. I was in 2nd, 3rd, and 4th gear in and out for 20 min races and it didnt stumble at all or feel flat. It was 20 degrees out so maybe I didnt have it warmed up enough when I did the high speed runs. When summer hits I'll pitch the lid and jet up. Still want to move to a Yoshi full system later on. I hear the Aliens are LOUD. I dont mind but Silver Lake does. Thanks again

 

Well compared to the Yoshi yes the Yoshi was too quiet for me but the Alien is quieter then the CT/Graydon and about the same as a W/B E-series with 18 discs