Would like to modify the stock mufflers on my 2004 vs800 Intruder because they work too well. Would like them a little louder. Have heard you can drill holes in them to increase the sound level. Where, how large and how many are the holes to be? Is there a web site with this info I can go to? If yes, what is the address? Thanks for the help.

Unless you have modified the engine in your new car and thereby voided the warranties, the existing exhaust system is adequately sized. If you want louder mufflers you should be able to replace those safely without endangering your warranty coverage, but read the fine print in your 3/36 bumper to bumper and 5/50 power-train warranties. Anything behind the catalytic converters is generally fair game (cat-back conversion) but again read your warranties. I have about 17 months left on the power-train warrantee on my 2010 Challenger before I will even think about any modifications.

Honda mufflers typically have several baffle walls You may need a drill 14 or more inches in length to punch through enough of these walls to make a noticeable difference. Changing the back pressure of the exhaust will also lean the mixture. This may cause a bad hesitation on take off. This will happen if you change the exhaust system also. To correct the hesitation you may need to install a jet kit on a carburetor model (about $100) or install a Power Commander on a fuel injected model (about $400 plus programming). In both cases your fuel economy will go down. Your stock system has a five year warranty, should not blue like an aftermarket pipe (unless you leave the choke on too long), and have a good long service life. Unfortunately there is no easy solution for your problem. Any aftermarket system will be way to loud (especially on the freeway) and drilling may not give you the desired sound you are looking for leaving you angry and frustrated. Consider a different option, One of the best sound options I have heard was a set of stock Harley pipes adapted to a Yamaha Virago 1100. Most Harley riders change out there exhaust systems before they even ride there bikes which should offer a cheap high quality system that can be adapted to your stock headers with common automotive adapter pipes and custom build it yourself supports (a simple modification of your stock pipe support/mounts). By not damaging your stock system you can always put it back on if you do not get the desired effect.

there are 2 bolts under the front area of the forward seat each side remove the 2 bolts lift the seat and forward to remove,then you will see 2 more bolts for the rear seat remove them slide the seat forward and remove it.

Hi

your cycle is quite different from a car in that the engine and trans(gears) are combined..so the same fluid lubricates and cools the bike....

being a v-twinn there are good oils out there today and much more inexpensive than before...
in fact many local auto stores and even discount stores have cycle oil...just make certain you get a quality brand like: valvoline,mobil,castrol and for your twinn i'd try a good 20w50.....check your manual for quantity and change the filter as well...some stores are even stocking cycle filters....

good kuck and safe riding

Yes, Buy a long drill bit and drill holes in rear baffels, I used 3/8 and started with 3 in each then drilled more as needed. But if you want it a lot louder you will have to drill from the front too. The drill bit I have is 18" long. If you can't find one like that you may need to use a drill bit extension.

If your title or registration don't specify, copy your VIN number and take that to your parts store. I really don't recall any sub-models for the 800 Intruder, but as they say "specifications are subject to change without notice".

install a smaller motor
the reason it is so loud is that the motor is tuned to a certin back presure so exhause provides this
ask the dealer if they have a quieter exhaust designed for the bike they might and at least you sill get a solid answer

I've found two different hp ratings for the VS800: 50 hp at 7500 rpm (according to suzukicycles.org) and 60hp at 6500 rpm (according to bikez.com).