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-   -   1999 5.3 tuning out false knock (https://www.performancetrucks.net/forums/tuning-diagnostics-electronics-wiring-161/1999-5-3-tuning-out-false-knock-531086/)

thunderstruck507 07-29-2014 10:52 AM

1999 5.3 tuning out false knock
 
I just installed a Cam Motion 205/210 cam and now the truck gets 8* false KR nearly all the time no matter what fuel I run.

I am about to update to an 02 OS and start tuning on that rather than the stock 99 tune.

Aside from general smoothing of the spark tables and disabling burst knock, what other areas should I be sure to check to make sure I get rid of this KR?

I am using EFI Live V2. The truck has the cam, 2.5" duals (stock manifolds), ported tb, and Corvette servo but is otherwise stock. I'm tuning on 89 octane. A/f will be set to around 12.5 at WOT.

GMC93 07-29-2014 11:51 AM

Do you have any exhaust rubbing the frame anywhere?

thunderstruck507 07-29-2014 01:14 PM

No I do not.

I just got the new OS loaded. The battery light on the cluster is now blinking but otherwise everything seems good, just need to redo some code deletions, rework trans tables to where I had them, tune the VE, etc.

I fixed my injector tables and MAF table so far along with the speedometer settings and PE table. The rest is still stock at the moment.


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