Quote:
Originally Posted by King Tut
I 100% agree. The only way to know that your tune is working is to be able to monitor it while driving with the use of a boost gauge and a wideband.
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A stand alone well calibrated wideband, I must add. Don't trust your AFR to a reading from the OBDII, which is reading from the primary AFR sensor which is not wideband. It's fine for boost as it's reading from the MAP but not ok for AFR.