Yes there was a fan on (brake on the dyno as well) the probe was put in 1 of the two silencers in the back. We would usually sniff both sides as well with the probe, not always though.
Could be, We spent 3 days testing different stuff on my motor and getting it dialed in so we didnt mess with more jetting variables even though the afr was coming in alright. Maybe this season we can test more.
Heres the graph Tyler- Didnt have the afr pulls but if remember snipers were the leanest at 13:1
http://www.bansheehq.com/forums/index.php?/topic/187424-421-driveline-lp-w-slps/page-7
I was thinking CPIs because it would seem like it would be a good in between of slps and shearers, Ill lose a little tq but will still pull longer but wont come on as late as shearers.
Thinking about picked up an extra set of pipes this winter to mess around with..
I have had shearers before in the past and Im looking into get some CPIs.
How do these pipes compare to shearers as far as power delivery, when it hits etc.