Oh, I am tuning to about 13 for the fuel on the dyno, and yes, I have a CEL. For many things actually... my cars computer hates all these mods. Which brings me to a bitching point... No one out there makes after markey computers for the 98 and up GS... so I am stuck with this one which is probably robbing me of some power, and keeping my rev limit at 7200. With as wide as my power band is, I would like to be shifting around 7500-7700, but my damn limiter kicks in. That and I still cant go faster than 125mph, cuz my computer cuts my fuel out...

and I do run 93octane gas. all the time... shell or chevron only! (got stock in 'em)
Oh yea, everyone, only use chevron gas... it is the best ever... it makes your car go faster.... j/k