Quote:
Originally Posted by cdq85
so I have possibly a real dumb question but I searched all through the forum for the answer. I flashed to stage 1 93 when I first received the oft a few months back. I ordered uel headers and then flashed over to stage 2 uel 93. I drove roughly 60 miles since flashing but I swear my butt dyno says it pulled a little harder between 3-4k on the stage 1 tune. I've been driving and letting it do its closed loop cycle for 90 percent of those 60 miles. Just wondering if anyone else feels this way?
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Butt dyno needs recalibration :-)
Butt dyno probably mistaking the agressive vvt sound in stage 1 tunes between 3000-4500 rpm as power.
due to uel header that agressive vvt timing is not used so its smoother and you dont get the raspy noise,