Is the cdi rev box worth buying? i've got a 2007 ltz400 spec. addition....ive got yoshi and jetted...i blow away my friends 400ex...i noticed the cdi rev box sayin 5-6 more hp but does it really work? what else can i do to my bike to make it faster?

 

I have one on my Z & the power difference is noticable, but definately not 5 horse. I have a 10 way adjustable one & when setting it between the levels you can feel the power gains in the rpm range it's set for. I have it on level one most of the time, which is for gains in the low-mid rpm range with stock rev limiter. The throttle response & torque is incredible.

But for example, when set to level three the bottom end feels soft, but pulls hard in the upper rpm range.

In my opinion they are woth the money.

 

I thought the rev box was to increase where the rev limit hits. The Z is around 8,500 and I think it adds about 1,000 so you can rev it up more before shifting. My brother put one on his and you can notice a difference. The stock box hits the limit too soon.

 

what brand did u get catman? and how much and where?

 

I don't remember the brand offhand (have to look at it) but I bought it brand new from a retailer on eBay for about $150.

 

how do u change the different settings?

 

With a small blade screwdriver. There is a dial with an arrow that points to 0-9.

 

do u remember the sellers id on ebay? do u think the k&n with the cover would be alright? what do u have?

 

I run an open airbox, K&N w/outerware. And here, http://cgi.ebay.com/ebaymotors...250126478557QQtcZphoto

 

I also have an 07 z400 with a FMF pipe, FMF jet kit, K&K air filter, and no lid. I am wondering if I get this cdi rev box, will it add some more torque at throttle response or is it to get more rpms at the end of the gear? Thank you