Quote:
Originally Posted by D2M
Ever since California emission standards or Ultra Low emission standards were introduced all cars are using wide band O² sensors as the pre cat sensors. The commanded ARF will change, the OEM range of change is unknown to me however but it will be able to adapt the AFR to a certain amount. You can feel the increase in power, its a day / night difference. A custom tune will be optimal however but will kill you warranty. I dont have a AFR monitor installed but I did pull a few spark plugs about 600 miles after install and they looked exactly the same as before the install. I have since driven the car about 5K miles, track days, 25°F weather, 95°F weather with AC on, part throttle and FULL throttle.. All is good so far and it runs great with no stumbles or flat spots in the power band.
Before I purchased my set I did some research on the LTH W/O tune subject and found some ZO6 Vette guys running this setup without issues.
|
I don't understand why you guys aren't running a tune can someone explain? I remember installing LTs on my C5Z06 and they sounded great and it felt like I had much more power. I brought my car to Corvettes of Westchester who I understood to be the best tuner around and happened to be close to where I live. I went there on a Saturday afternoon and spent like 4 hours watching this guy tune the car throughout the day. When I got back in my car to test drive it I was in shock how different the car was. The throttle response was ridiculous and the power was insanely different and crisp all the way through high and low RPMs. My point is that with headers and no tune I thought the car was very improved until I got a proper tune and realized it was night and day.