Originally Posted by happasaiyan
no closed loop wideband feedback on the UTEC? really? couldve fooled me, because i have it on mine...and every other UTEC out there. yes, its still the stock ECU calculating it, but the injectors are still being driven by the UTEC.
i daily drive MY car and it works fine for me with a UTEC. sounds like the UTECs youve driven werent tuned very well...ive spent countless hours tuning and tweaking my maps, and they are very smooth.
I should have been more clear. With the stock ECU you do have closed loop wideband feedback...but not in the same way as with the Hydra. With the Hydra you get to set your AFR targets(if you purchase the optional wideband o2 sensor) rather than letting the stock ECU use its own algorithms to determine fuel map adjustments.
Happasaiyan I'm glad you got your UTEC working to your satisfaction. It is true that the cars I've been in that were tuned with a UTEC weren't tuned well. I didn't mean to say that the UTEC is impossible to get to work properly--it just takes, as you said, "countless hours tuning and tweaking maps." I don't doubt a tuner familiar with the UTEC would be able to make a "set it and forget it" tune on one but from what I've seen its easier said than done.