Hello Everyone,
I've recently been doing incremental changes to my tune using HP Tuners. I also installed a WB O2 sensor, but I have a few questions.
Is my O2 sensor showing the ~actual~ air / fuel ratio? I'm not sure if there's some interpolation that I have to do, or if its showing the actual ratio.
During the run (log file attached) I did a couple of 0-60 mph and 0-100 mph runs; (starting at the 12:57 point in the timeline)given my mods, what are your thoughts regarding the performance?
I've also noticed some "burbling" during coast-down from speed. What I mean is that under certain conditions, when I let off of the throttle, I get that gentle "popping / burbling" in the exhaust pipe. I'm thinking that this is a rich condition where the un-burned fuel is actually burning in the headers. Not only is this (probably hurting performance, but I'm sure that its no good for the fuel economy, as well.)
I've got a '98 Coupe, LS1
My pertinent mods are:
LS6 intake
Kooks 1 3/4 LT headers, X pipe, and axle-back
3400 stall TQ converter
My tires are Sumitomo HTR's (I know, I know....they're cheap, which is great because my 9 yr old son LOVES burnouts and donuts!)
I'm curious to hear comments / suggestions regarding my questions and my tune file.
Thanks in advance!
KoreaJon