Just got a 1991 gsxf 600 a few weeks ago. Have been messing with the carbs to get it to run right. Now Originally the bike had a K&N filter, stock jetting and NGK Hot plugs. But I dnt think the exhaust is stock. Its a Vance and Hines Supersport 4-1 exhaust judging by the tag on the muffler and it fits the description on this site.http://www.starcycle-usa.com/servlet..._GSX600/Detail
Now my question is, How much better is this exhaust over the stock setup? Does the increase in flow warrant a jet kit? or a richer idle A/F mixture?
I have my A/F screws set at 2.5 at the moment but i noticed when its cold (choke on) I have a empty NOT loud popping out the exhaust, like burbling noise. This goes away after it warms up but I also have a slight hesitation when i blip the throttle. ALso my idle is a little irratic it will fluctuate from 1200-1500 slowly. Does this sound like a lean issue? I wonder if the exhaust/bike would be better with a jet kit like the FP stage 1, or do i just need to richen up the A/F screws a little.
Ive put new plug wires, new stock NGK plugs, new air filter, carbs have been rebuilt and cleaned and synced.
Now my question is, How much better is this exhaust over the stock setup? Does the increase in flow warrant a jet kit? or a richer idle A/F mixture?
I have my A/F screws set at 2.5 at the moment but i noticed when its cold (choke on) I have a empty NOT loud popping out the exhaust, like burbling noise. This goes away after it warms up but I also have a slight hesitation when i blip the throttle. ALso my idle is a little irratic it will fluctuate from 1200-1500 slowly. Does this sound like a lean issue? I wonder if the exhaust/bike would be better with a jet kit like the FP stage 1, or do i just need to richen up the A/F screws a little.
Ive put new plug wires, new stock NGK plugs, new air filter, carbs have been rebuilt and cleaned and synced.
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