Not Ranked
Sounds like Rick has it. Something is changing under the hood. There are a lot of problems with radical engines and aftermarket EFI systems. It seems the vast majority of these issues can be traced back to two simple things:
1. Faulty sensor. There's a lot of information the computer collects to make decisions. If one opr two of those sensors are not reading correctly, you'll get poor performance. IMO, you should only use factory sensors from GM or Ford. They cost a little more, but they'll work and last forever.
2. Poor tuning. There's a learning curve with performance EFI. And sometimes that learning curve is pretty steep. Automakers have spent milions of dollars and thousands of man hours to develop EFI systems. If you make radical changes in engine parameters, you need to spend some time and money to develop the software.
I have a fairly radical engine, compared to stock. I struggled with my EFI for a couple of years. I was learning, and it was getting better. But it was never quite right; never perfect. Then I found a tuner that knew my system and software, and how to run a dyno. Now it's perfect. Let me tell you, a well tuned EFI is a real joy to drive. Perfect in all conditions and altitudes. Idles smoothly at 850, smooth and docile until I hit the pedal, then it screams and takes off like a jet. I wouldn't ever trade for a carb.
|