Frosty

iTrader: (17)

I was at the track tonight and was looking through my scanmaster readings.

At the top of 3rd towards the end of the track I had a steady 2.3-2.5 degrees of knock retard. Also my highest O2mv reading was 901. Isn't that a bit rich?

Let me know if that's ok to run with, thanks!

horist

2.3-2.5 degrees of knock on our cars is WAY too much....

901mv on the O2s for narrowband is also too low.... (too lean)

narrowbands are innacurate... but several years ago when I tuned based on narrowbands.... I looked for .930+


but regardless.. real performance can not be based on narrowband sensors...

You need to get a wideband sensor... and you're experiencing WAY too much knock....

w/out a wideband... I wouldn't go WOT anymore if it were my car...

Frosty

iTrader: (17)

I know it's hard to tune on a regular O2...but I figured I'd throw that number out there.

So that's much knock is too much eh? ****. Oh well, time to have my tuning guy look at it again. Could it have just been a case of bad gas? I think he has either 31 or 32 degrees of timing at the top of 3rd but I can't remember.

Anything else to look for?

thanks for your response

StealthV

With suspected lean conditions (get a WBO2, get a WBO2) and 31-32 degrees of timing - the knock should be expected.

Back the timing off and richen up the WOT and your car will be faster. And did anyone mention, get a WBO2?

Frosty

iTrader: (17)

I have a GREAT idea! YOU spend the $$ and get me one!

Thanks for the help man, it's appreciated