CT, Sparks, LTE, Barker are the big dogs. Duncan's fatboy4 and LRD's unit both have some pretty good credentials. Prices range from 450-800. Your exhaust is not junk by any means, but its designed for a stock engine and flow. You wont see the limit of the pipe until you port the head unless you go really crazy with a cam or carb.Same thing with FMF, Pro-curcuit, dg, or White Bros.[/quote]

I couldnt agree with this any better, redwings right this down cuz its 100% accurate. Like he said it works but its designed for a stock motor.

 

Agreed..100%

 

is the yoshi comp series a worthy pipe for mods?

 

So would you go stage one or two with a better exhuast, I rise around on ditches and hills for the most part,but am looking for a good boost on the top end. How hard is it to install the stage 2 compared to the stage 1, is this something i can do myself? I have built two engines for my mustangs from the ground up. Is hot cams the best option?

 

Holy crap stallion i thought you died and fell of the face of the earth!!!

redwings, the stage one is the only cam that allows you to use your stock valvetrain. ALL of the other cams require the kibblewhite setup in addition to the cam. In my opinion its easy. If you looking for a large gain in top end, the x-4 is the only cam you need buy then, it pulls like a freight train on top end, no joke. look at my pics page, and look how the stage 1 pulls on the dyno. stallion is running the stage two, and rapfams sister is running the x-4 and she kills us all with the x-4, which is why stallion in loking into the x-4. i just wish i would have went with a better cam then the stage one. IMO the x-4 is the best cam. I just dont see all of your reasoning behind all of this though, why are you even bothing with a cam, when you dont have a ported head, and the excellent pipe. If money is a option i understand. your taking the top end off, why not port the damn head why your at it.

 

voodoo, the yoshi is a good pipe, too loud for me though. for the money its a nice pipe, but dont they run like $600?

 

how much to get the head ported, do you have to get new valves?

 

Where do you get the x-4 from?

 

Can my yamaha dealer order any of the better exhaust kits?

 

I got the full exhaust for $350 online shipped to my door, it ranges between 100-106db(1/4-1/2 throttle) idle 96 db's by my measurements with spl meter 5ft back and offset 5 ft.

just get a 686 kit and spend all the money at once[img]i/expressions/face-icon-small-smile.gif[/img]

I might need to break down and do just that....