RE: noise level
i have a ribbed pipe too. but then again i really dont know how loud it is with the stock pipe because i got my savage of ebay and it came with a ribbed pipe. i really dont think there is to much of a difference. at full throttle it is like 3 time louder than an average lawnmower and full throttle is mostly what you will be doing. mostly... anywayz if you plan on driving in a neighborhood, DONT! you WILL get a complaint. luckily for me i got one but they only complained to me not my parents. so basicly these things are pretty loud aa errr actually theyre VERY loud. i didnt think it would be that loud when i got it (it was my first nitro) but now i know and only drive it in a construction site a few blocks fromy my house.