i put a header on my yota and left the smog stuff just sitting there unhooked. now my runner bogs at low rpm and really kicks in at high rpm. is my smog pump my problem and if so, what should i do to fix it?
thanks.
Simply installing a header on an otherwise stock engine will usually result in loss of power due to the fact that you will lose some torque. Torque is what you "feel" when you accelerate. Most stock engines are designed to run with a certain amount of back pressure and installing the header takes away from that. You may notice an increase in performance at higher RPM's which generally mean you have gained a little bit of horsepower which is also true for most stock engines with a header installed.
To get full benefit from a header, other modifications are necessary to make the most out of the decrease in back pressure. Just an example of what you might need to accomplish that....increased camshaft lift and timing, higher compression, better flowing cylinder head and more.....
