Poor fuel mileage - 86 K10

[Orion88]

Well when I'm at WOT I don't care about mileage, cuz I only ever lay the hammer down during short bursts of road rage or for 10 seconds of fun. However I will let the engine idle for a few then recheck the plugs. Once again there would be no point in installing an A/F meter until I replace my rusty exhaust. I have a set of straight pipes and knock off flowmasters I took off my GTO that should fit just fine, I just have to find an affordable set of manifolds that flow better than my logs, then get some downpipes. I don't care for the hassle of headers personally.