Got a new TPS from napa. Installed it, slight improvement, but still poor throttle response and hesitation. Have adusted and noticed big difference with TPS adjustment. Anyone have experience on tuning one of these in? Truck runs decent, but I have to floor it all the way. Circuit opening relay and Start Injector Time Switch exceeding recquired resistance. Any one have any experience with this? What happens when your ECU is fried?

When I bought the truck it didn't even have an oxygen sensor and ran fine. I have a bosch sensor now. Head is high performance...do I need to give it more fuel? Could my fuel injectors be clogged up or do I need better ones?