Lookin for shee pipes, i'm stuck between CPI and toomey. The cpi inframe's look really cool IMO, and as claimed by cpi, they respond well to modded motors, which i hope to have someday, lol. The toomey's are supposed to be better for stock motors, but their dyno charts are confuzing, as i assume they intended them to be.

Toomey has a dyno of a cpi banshee v. a t-6 banshee. They show the toomey in the lead and steeply increasing power up to about 8250 and then dropping off, the cpi's are more gradual, but they dont drop off til after 9k, which they dont show on the chart. Which are more powerful, I want as much top end as I can get. I want to improve on the light-switch powerband (i want it even more on and off than stock), but I kinda want the cpi's, cause like i said they look better, and they're slightly cheaper, and if the dyno is skewed the way i think it is, they're as powerful, or possibly moreso than the toomeys.

Anyway, some firsthand experience or suggestions would be appreciated. Thx.

 

Check here

 

Around here, trail bikes have toomey and fmf, built drag bikes that still use mass produced pipes use cpi. A lot of the rest of them run open ended drag pipes.

They toomeys are great, but if you are looking for peak performance on a built machine, cpi is the way to go. IMO of course.

 

Why do you say "mass produced" about CPI? Are the toomey's hand made or something? The welds looked kinda crappy on the CPI's, but they seem like a better shape (bigger expansion chamber, less twists). Also, if I did leave the motor stock, at least for a few years, which would be a better set for me to get?

 

I said mass produced because the people who still use mass produced pipes like toomey, fmf, cpi and others typically use cpi. The rest use drag pipes which are typically made in much lower volumes.

 

all my buddies that run in or outframe pipes on the bikes run CPI or Shearer! And if you want a total custom set of pipes... when you do build your motor your builder can call Shearer or CPI with the specs of the motor and they will build you a TRUE custom set of pipes for very little more money than the original cost of the off the shelf CPI'S or Shearer's!

 

I have seen some of the more recent cpi out of frame pipes with some poor build quality as of late, but to my understanding cpi has replaced them for the people who contacted them about it.

There is a company called rocket pipes that supposedly makes some nice pipes, but I dont have any first hand evidence to back that up.

 

I was just about to post a question about rocketpipes (damn internet keeps cutting me off). Anyway, I think they're kinda cool, they remind me of CPI, but the silencers are nicer. rocketpipes

 

Maddog56, your right about the poor quailty and bad welds on the CPI out of frame pipes.. I bought a set of out of frame drag pipes about 8 weeks ago.. They had bad welds and did not fit very well at all.. I contacted CPI and sent them back.. Two weeks went by and I never got a replacement set.. So I called, and was told they had my pipes but didn't know what to do with them!!!! So I asked to talk to the owner Mike Hair.. This guy got on the phone and told me that the pipes didn't look that bad to him.. He said only one guy welds up these pipe's and he has never sold a bad set, and he was pretty much a big jerk!!!! I told him I have a set of CPI inframes that are very nice, but the out of frame pipes don't even fit! Well I told him give me a refund or send me a better set of pipes!!! After about 2 more weeks I got another set of pipes.. There a little better on the welds and at least they fit this time.... The Customer service is VERY BAD at CPI...

 

You said the cpi inframes are nice, thats the one's I'm interested in. I just want to know which is the most powerful on a stock motor, and which is the most powerful on a lightly modded motor. I like how steeply the power increases according to the toomey dyno, and since they're available through RMATV, i'll most likely end up with them. Also, would I absolutely HAVE to get the sparky 2 spark arresters, since the toomeys dont have them already, or could I get away with them as is as long as I dont attract attention to myself in the dunes? Do the CPI inframe's have spark arresters?