datamaster

[randy merritt]

Re: datamaster

That looks much better. You are maxing out the injectors (duty cycle above 100%). your tune (stock I guess) is very aggressive at pulling timing out for relatively low knock counts. I don't really know what to say about that. If you were running code 59, I would. Your boost looks conservative, which is good. The boost in this last run is lower than your previous runs. I would say there must be some problem with your wastegate solenoid. you may want to look into a manual boost controller.

 

[sychris]

Re: datamaster

That looks much better. You are maxing out the injectors (duty cycle above 100%). your tune (stock I guess) is very aggressive at pulling timing out for relatively low knock counts. I don't really know what to say about that. If you were running code 59, I would. Your boost looks conservative, which is good. The boost in this last run is lower than your previous runs. I would say there must be some problem with your wastegate solenoid. you may want to look into a manual boost controller.

now this run in the morning . whats up with the spark retard http://www.mediafire.com/?bp3ww7m8e8ihrs6 . its going up and down with 25%TPS ??

 

[randy merritt]

Re: datamaster

You really need to look for a false knock. Make sure nothing is hitting the block, loose exhaust, etc. Check the motor mounts. All a knock sensor does it detect a noise. You can make the truck computer detect knock and pull timing by hitting the block/motor with a hammer. Look for the simple things. HTH.

From Tooky's web page powertuneplus.com Great basic stuff:

"Sources of Knock:

Something Banging Inside Your Truck! My own truck was plagued by a hellish knock problem for years because of this! No matter what I did, the truck would knock 3-7* even with very high octane fuel. Ultimately it turned out to be a steel fuel pipe banging on the tranny bellhousing right near the knock sensor. I insulated the pipe with a rubber bike tube zip-tied so that there could never be any further metal-to-metal contact. That same day was the first time my truck ever experienced Flat-line Zero Knock!! Other common "false knock" causes include: turbo downpipe banging against the frame (pipe can be repositioned), bad motor mounts, or even a knock sensor that's been overtorqued (factory spec is 14 LB-FT). "

--------------------------------------------------------------------------------