I have been looking at a AMR stage 2 rev box on ebay and i was wondering if anyone had any bad info. on the box? and yes i need the rev box b/c i have a 426ex and it it hitting the rev limiter too much. thanks

 

I dont have info on that specific brand, but I have not had any problems with the one I got off there (and it was really cheap too lol), but if your making enough power to bounce off the limiter all the time (not just first or second etc) then you may need to make a gearing change.

I know with mine I had to go to a smaller rear (I think 36T) because it was going thru the lower gears way too fast plus it helped with not only top speed increases but also allowed the lower gears to be more usefull.

Also the only problem I had that I would caution you of is that this engine doesnt really like higher rpm, and if your running any real compression (over a true 12:1 etc) it can be a disasterous mix. I wont get too much into details, but after installing the rev box onto my high comp (12.7:1) set up it blew out the head gasket and then pulled the damn head studs right up.

Actually though I loved the increased power in the mid to top end from the changes in the ign curve etc I have been questioning if I will be using it again when I get everything back together again.

Hope that helps

 

Yup got a 36t rear sproket and it gave me more top end so thanks alot for the advice

 

and yea that stud problem is a hard lesson to learn. lol

 

I bought one of these Stage 2 Rev boxes for my 04' 300EX. It made it run like crap! I kind of gave me a few extra RPM's but it ran rough, idled like ****, missed occasionally when loaded heavy on the throttle. After about a half day run I decided to swap out with the stock CDI and it ran MUCH smoother, idled nice and ran over all much better - but still had the rev limiter. Oh well, I'd rather have it run nice w/rev limiter than like crap without one. Don't waste your money.....