mods are 3.5 mps,cai,3" dp, plog, ported rear, coated cross over,custom tune 02 gt with a 04 monte ss motor and trans runnin 92 octane

anyone help me out with why im seeing so much knock?

http://www.scandepot.net/viewscan.php?pk=5170

your running slightly lean. only about 905 o2's. Need to add fuel. isnt the gt fuel pump different than the gtp fuel pump?

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Member #393

Dave's Hocus Pocus Tuning of South Dakota

Don't need much more fuel. I ran a 935-945 O2 level with a 3.4", stock mani's, 19* of timing. What plugs are you running? I'd step to the Autolite 104 plugs. You don't list them, and they help...a lot. What thermostat? You don't list a 180* and that will help a lot as well. Also, in your tune, when do the fans come on?

-- Mon Jul 05, 2010 12:43 pm --

Also, your commanded A/F isn't doing what it needs to. The longer you run WOT, it needs to richen itself up. Yours is, but not to the degree that it should, in my opinion.

I had better scans than this...my commanded A/F was richer here than I ended up finally running, but you can get here...easily. Take a peek at it: http://www.scandepot.net/viewscan.php?pk=3835

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One Big Ass Mistake America

im running 104's and 180 t-stat with 180 or 185 for fans

I no longer have the DHP software on my laptop, but I think I turned the primary fan on at 179* and the secondary at 186*. Richen it up maybe .2:1, and then work on the Time WOT vs. Commanded A/F table. I forget what it is called. But, that's what you likely need to do. I am very surprised you're running so little timing.

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One Big Ass Mistake America

hey any help with this scan? http://www.scandepot.net/viewscan.php?pk=5196
i added a zzp pcm