Answer Roost Boost, does it work?

[thefox]

How much of a difference does a roost boost make on a 4 stroke? Would there be any noticable difference in power or would it just be a waste of money?

[Redrooster]

From what i remember, the rooste boost works with the stock cdi, and basically bypasses the rev limiter. I dont think they have been made in a while, so any of them out there might be old, and i would recomend getting aftermarket high rev cdi.

[thefox]

So do you think it would be worth $30? I was thinking of running a xr200 electrical system with a roost boost on my 200x project, I know that I would be loosing the lighting coil but I don't plan on having any lights anyways. I'm not sure this setup would be any better then a stock 200x one anyways.

[HRC1]

I didn't know a roost boost was made for a 4 stroke. And there is a reason they arent made anymore. They really don't do anything. Supposebly hotter spark to completly burn all the fuel, well if your jetted right u wont have any excess fuel to burn anyways, I saw a test on one once way back when. The results on a dyno were almost undetectable, i wouldnt mess with it, your not gonna beat anyone just cause u have one and the other guy doesent.

[atczack]

Roost Boost is garbage. My friend had one on his KX back in the day. Waste of money. Not the slightest bit of performance gain in any gear, at any RPM, or in any condition.

[TimSr]

Its supposed to make a "hotter spark" and I agree that its a waste of money. They make aftermarket free rev CDI's for newer quads, but I dont know if any trikes ever even had rev limiters. Maybe somebody else knows of some that do, but none of the ones Ive had ever had a rev limiter.

[350x'inNY]

Well.... any early Honda 4wheeler racers know that a 350X CDI doesn't have a rev limiter. They were often used in 250X, 300EX from what I've been told to get extra rev's.... So if a 350X didn't have a rev limiter, I'd doubt if a 200X would.

Bruce

[thefox]

Ok, I think for now I will just stick with the 200x electrical then. I just saw a roost boost for the xr200 and didn't know if I found another performance upgrade. I didn't know that there was a roost boost made for 4 strokes. Thanks for the help.

[hrc85250r]

everyone says that roost boost doesnt do anything, but how many people have actually tried them???? i have it and i noticed that it revved upa little faster, not necessarily more powerful, but a little more snap....

[Pistonhead]

From what I've heard they are about as good for adding power as a twist throttle and shaved fenders.

[Trikeaholic]

if you are goin for old school, just get it for the heck of it, an old oddity part, at the very least, its not like its $100!

[HRC1]

everyone says that roost boost doesnt do anything, but how many people have actually tried them???? i have it and i noticed that it revved upa little faster, not necessarily more powerful, but a little more snap....

Um, i have, and so did 2 friends of mine, and with back to back runs, 3 sep 250r's and 3 seperate RB's, there was no diff, perhaps you are jetted rich. Like i said, there is a reason it isnt made anymore. One rather respected engine builder i know once put it into his top 5 was suppost to work but just didn't catagory of famouse 2 stroke engine gimicks.

[hrc85250r]

hrc1, i am not jetted rich, thanks....i am just saying what i noticed, and it isnt just the roost boost that answer doesnt make anymore, its everything that had to do with motors!....maybe they just didnt sell alot of stuff and had to shut down the whole performance products thing.....well, i will dyno it at school in the spring and tell you if it does or not...and i put 5 bucks on it that it does do something ....in case you havent noticed all answer makes is gear now... (and bars???)....

....and what else was on the list of gimmicks????

[diggerzmound]

How Could a Roost Boost Bypass the Rev LImiter??? It installs inline with the plug wire...... The Rev- LImiting is a process controlled by the CDI which is Upstream from the coil.. THe CDI cuts signals to the coil. So with the roost boost the last hing on the chain, it CAN'T bypass rev limits. Answer made the Roost Boost. And all it is, is a step up coil. It is supposed to step up the voltage of the coil. And every time I had a hold on the spark plug at the wrong time, I believe ther was plenty of voltage in stock form.... They are really a joke, now for some of the off brand bikes that had lackluster ingition systems, they may be a half assed fix. But the average 2 stroke has plenty of spark.... Hell nostalgia is the only reason to pick up one of this unique paper weights...

[hrc85250r]

How Could a Roost Boost Bypass the Rev LImiter??? It installs inline with the plug wire...... The Rev- LImiting is a process controlled by the CDI which is Upstream from the coil.. THe CDI cuts signals to the coil. So with the roost boost the last hing on the chain, it CAN'T bypass rev limits. Answer made the Roost Boost. And all it is, is a step up coil. It is supposed to step up the voltage of the coil. And every time I had a hold on the spark plug at the wrong time, I believe ther was plenty of voltage in stock form.... They are really a joke, now for some of the off brand bikes that had lackluster ingition systems, they may be a half assed fix. But the average 2 stroke has plenty of spark.... Hell nostalgia is the only reason to pick up one of this unique paper weights...

lol, you guys are spent, seriously why would anyone sell anything that didnt do anything?!?!?! it does do something! and the 250r was noted for having a weak spark, and if you couldnt afford the expensive racing parts like a cr ignition or vertex or whatever, this was the way to go....it isnt half-assed, it is how you do it on a budget....and yes digger you are right, it doesnt bypass the ignition and all it does is step up voltage to make the spark a little hotter to burn the a/f mix a little better....