robert0762 Posted April 20, 2009 Report Share Posted April 20, 2009 Just got my pro cir platinums today . Not gonna be able to try them till this weekend but what can i expect. How much of a diff over stock. I am stock motor k&n filter no lid Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted April 20, 2009 Report Share Posted April 20, 2009 are you asking about the performance gains to be had, or the jetting that you will need to run w/those pipes? Quote Link to comment Share on other sites More sharing options...
robert0762 Posted April 20, 2009 Author Report Share Posted April 20, 2009 Performance gains Although jetting starting point will help too I think I am going to start with 380 s and 27.5 and go from there I'm at sealevel and its about 60 Quote Link to comment Share on other sites More sharing options...
2/2 many banshees Posted April 20, 2009 Report Share Posted April 20, 2009 380's on stock carbs thats a bit fat if I had to guess try 320's keep in mind like you said it's 60 outside and that's still going to be rich if I had to guess Quote Link to comment Share on other sites More sharing options...
robert0762 Posted April 20, 2009 Author Report Share Posted April 20, 2009 380's on stock carbs thats a bit fat if I had to guess try 320's keep in mind like you said it's 60 outside and that's still going to be rich if I had to guess I actually got that #from the poll they had on here someone else was running it on pretty much the same setup. I did think it was a lil big but I'd rather know i'm rick and go from there instead of doing a wide open run when lean Quote Link to comment Share on other sites More sharing options...
Handyman Posted April 21, 2009 Report Share Posted April 21, 2009 You are going to notice I big difference for the better. The throttle repsonse, the way it runs(accelerates etc) with put a smile on your face... Since you are at seal level I's go no more than a 340....on my '99(mods in my sig) I run a 340 at 4500ft above sea leavel and a 310 at 200 ft above sea level and that is right on and it runs extremely strong. BUT, every motor is different and you may have to play with the jetting to get it right...You are good for the pilot jet...perfect size. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted April 21, 2009 Report Share Posted April 21, 2009 performance gains will be awesome as already stated. for jetting, start out w/330-340 mains, stock needles w/clip in middle position, 27.5 pilots and 1-1/2 turns on the air screws. Quote Link to comment Share on other sites More sharing options...
robert0762 Posted April 21, 2009 Author Report Share Posted April 21, 2009 You are going to notice I big difference for the better. The throttle repsonse, the way it runs(accelerates etc) with put a smile on your face... Since you are at seal level I's go no more than a 340....on my '99(mods in my sig) I run a 340 at 4500ft above sea leavel and a 310 at 200 ft above sea level and that is right on and it runs extremely strong. BUT, every motor is different and you may have to play with the jetting to get it right...You are good for the pilot jet...perfect size. I thought the air was denser a sealevel so you had to jet up to compensate for the extra oxegen. Please correct me if I'm wrong??? Quote Link to comment Share on other sites More sharing options...
TNTS355 Posted April 21, 2009 Report Share Posted April 21, 2009 Performance gains Although jetting starting point will help too I think I am going to start with 380 s and 27.5 and go from there I'm at sealevel and its about 60 I am at 800ft, no box, dune port, v3 reeds, milled head. When I had stock carbs I ran 320 main and stock 25 pilots. I would suggest picking up a set of 28mm Keihin's as soon as you can. You will see about a 7-10% increase in power. As said earlier at your eleavation I would start high and work your way down. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted April 21, 2009 Report Share Posted April 21, 2009 I thought the air was denser a sealevel so you had to jet up to compensate for the extra oxegen. Please correct me if I'm wrong??? you do have to jet up, to compensate for the denser air @ sea level, but 380 is way to much. you will not need anything over 350 for sure, especially w/no porting. Quote Link to comment Share on other sites More sharing options...
Handyman Posted April 21, 2009 Report Share Posted April 21, 2009 I thought the air was denser a sealevel so you had to jet up to compensate for the extra oxegen. Please correct me if I'm wrong??? jetting has always thrown me for a loop....that's what everyone says...."jet bigger the closer you get to sea level" but both of my bikes are backwards....at sea level, on my '99, I run a 310 at 4500 ft elevation i run a 340....on my 421 I used a 160 for the break in proocess and I use a 155 at 4500ft elevation.... I can't remember what i was running at 200ft above sea level..i want to say I ran a 148..but it's been too long. I've also heard people say that since the air is thinner the higher you go, the bigger your main has to be to compensate for the thinner air.... I jet according to what my bikes tell me.... Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted April 25, 2009 Report Share Posted April 25, 2009 im at 500 asl with pc pipes and pods and im at 290 mains and 30 pilots. 380s seem HUGE with an airbox! Quote Link to comment Share on other sites More sharing options...
bansheeqc Posted April 25, 2009 Report Share Posted April 25, 2009 my stock banshee with only pro circuit pipe, run 250 main at 200 feet Quote Link to comment Share on other sites More sharing options...
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