HSN is 2 turns out from fully seated (or 2 turns out from flush with the housing)? Or did you mean 2 turns in from Flush with the housing? If it's only 2 turns out from fully seated YOU ARE WAY TOO LEAN! lol Well maybe not on that particular engine, but 2 turns is not really open hardly at all from flush....so if I had to guess your lean on both needles.
The "wah wah wah" sounds like a lean bog though....the engine is basically starving for fuel at the low speed needle. This could be either because your LSN is too lean....or your HSN is too lean. I would try to richen the HSN 1-2 hours and see what happens. You may also need to richen your LSN 1 hour or so, but start with the HSN first.
What you want to do really is this:
1. Start engine and let it warm up for 1-2 minutes.
2. From a dead stop, do a wide open pass down the street (use gradual throttle if you have to)
3. After 2-3 passes, try and remember what the engine was doing on the top end of things.
4. Tune the HSN to run nice and crisp on the top end at speed, but so it doesn't die when you hop on the brakes.
If it bogs and chokes at full throttle/speed then you're definitely too rich. If you don't see any smoke and the rig seems awfully fast....you're probably too lean. You want a nice trail of blue smoke behind you, and when you go from idle to full throttle you really want to see a healthy cloud of smoke puff out when you take off. If you are at a track or bashing around, same deal...every corner you take where you let off and get back on the throttle you want to see a nice puff of smoke and then a healthy trail.
Once you're done with that, now it's time to tune the LSN. If it's bogging when you go wide open from a dead stop, you need to figure out why. Engine temps will help here. If it runs real hot at idle, your LSN is probably too lean. If it loads up with fuel at stalls after 10-15 seconds at idle....you're probably too rich. Somewhere in between is the tune you are looking for. Ideally, you want it lean enough to give you a good fast launch when you are at a dead stop and go wide open, but you want to see some nice smoke when it takes off, and you want to keep your temps in check.
Find that balance, and your engine will love you in return. Once you think you've got the LSN tuned, let it idle and then pinch the fuel line. If it revs up and dies after say 2-5 seconds....you're probably pretty close to the perfect tune. If it dies instantly, you're too lean....if it takes awhile for it to rev up and finally stall...you're too rich.
Hope that helps? lol
