has anyone ever run there engine without the six port sleeve and does the engine run better or not or at all, just curious haveing problems tuning the sidedraft it might be the six port sleeve not working need input on this

 

this will utterly kill your low end power. guy's who do this run road race cars and their engines never dip below 4-5k rpms.

 

I peronally haven't run my car without them. It'll run like a bag of hammers from what I heard.

 

How significant is the High end gain? I use my car mainly for drag racing and don't mind no low end