I didn't bother with trying to alter the LSR. It really is a good high end pipe but we never really consistently ride in that range.

Actually I can believe that the mikuni works better. The biggest problem I have with the S&S is that when under load cruising in 5th or 6th gear @ 2750 or above where the main starts to come in, it's almost impossible to tune out the rich condition.

In an e-mail to S&S tech support they actually told me that a butterfly type carburetor will do exactly that. With 10% throttle opening and under load the drop in atmospheric pressure in the venturi will start to draw on the main jet and that there is no tuning that can be done to get rid of it. If I didn't have the wego I would not have ever seen it.

So Instead of ****ing around and trying to tune a pipe for low to intermediate range, it's just easier to do the pipe swap and retune.

And that's what I did tonight. Put the Bassani 2-1 on and immediately I was able to get a good AFR at idle. One thing That I was not able to do with the LSR. With a little rejetting I was able get get it running very nicely. I will need to get a few miles on this tune before I can make any attempt at another Dyno run.

So that's where I am at for now. I will say that I did not notice any drop in performance from the swap of the pipes.....

 

I would say that that is to lean for best power. For full throttle power runs, we looked for 12.6 + or -

 

Wow that low. I've been shooting for 13.3-13.6. For wide open throttle. For cruising I've been trying to get 14.0-14.3. Tough to get all ranges. Sometimes you have to sacrifice somewhere...

 

Personally think WOT AFR is engine specific, the 89" felt at home 13.2 - 13.4, the 130" will detonate in this range even at the #4 timing setting, had to drop to 12.5 to make it happy. Cruise is at 13.2 and idle is richer than that, reason? dam thing will pop out the carb if you don't feed it. Tach goes to the right, gas gauge goes to the left

 

As long as your grinning it can drink as much fuel as necessary....