Koso 02 adaptor spacer /powderfreaks head

kingcat162

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I have the koso X2 gauge and on their website it says to run the adaptor spacer - but man it throws the numbers on the Afr way out to lunch -got rid of it - dead to me - also finding the powderfreaks head stops any kind of popping lean or rich - stock head it would pop if I was at 13 on afrs and pop at 11 - now with the head I could probably lean it out till it melts without it popping out the intake - running Shelbourne at 96 octane with the base fuel 91 shell - 9lbs boost - runs very very well - I thought the Shelbourne was making my pipe super hot - turns out I was running brutally lean - lucky etecs like to run stupidly lean or a chopper ride it woulda been - oh and if you have an xm - pls carry haywire and electrical tape so that when your spark plug wire falls apart you can jam the haywire in each end and tape it up and run it for the rest of the day doin pulls
 
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