first off, since you mentioned the word "histogram", i'm assuming your logging with HPTuners? first, be sure to contact Brian at magnuson, i'm sure he'll walk you through any steps necessary to verify the install is correct. after that, i would be certian your running at least 91 octane fuel, be sure you don't have "bad" gas in the tank. next, use HPTuners to download and save the stock magnuson tune, then using the histogram, reduce timing slightly in the main spark table where you are seeing the KR. save that tune with a different file name as to not modify the stock mag tune that way you'll always have it. log some more and come back to let us know how things went. chances are, you'll need to repeat that process 4 or more times to completely remove KR. since your audibly hearing Knocking or pinging, you'll need to take it easy on it.

next issue, tranny line pressure is fine at 95. mine was at 125 before my shift kit, then i backed it down to 90 afterwards. even at 125, shifts wern't really that hard.

 

I would like to start off with some basic stuff, like check fuel pressue and boost. Then we can go from there. I would also like to see a test dyno, we know what your baseline was.....

 

that magna tune is built for all of us, all over the country...cold, hot, humid, dry, high altitude, low altitude. It's gotta be hard (from magna's point of view) to believe the tune is at fault I'd imagine. Wide parameters. Don't change **** until you go through the proper troubleshooting list with Brian or whomever at magna. Leave nothing hidden, they gotta know every little detail that you change. hang in there...you'll be fine....and don't beat on it! That alone is what sucks.

 

CHeck your fuel pressure. At 50-60% throttle, you should just then be coming into boost, which is where PE needs to start. It could also be an enrichment rate problem, but I would bet on lack of fuel.

Check the pressure regulator, and that itsy O-ring on the center. In fact ... go ahead and replace it with another one just to rule that out. Best place to get them as at a bearing supply store or something like that.

 

without a doubt there is something causing this. the timing curve built into the radix kit is very, very mild and should never cause KR*. what year is your truck?

 

'04. At 16 degrees, it pulls 5.5 so it's knocking until 10.5 degress of timing, with a free flowing exhaust boost is going to be lower and the 02 sensors are reading 890 so fueling should be correct?

 

unless you are losing fuel pressure.......Might want to double check it.

 

Set your pe enrichment rate to 1. Bump up the ve so that it provides a smooth transition into pe mode. Also I would lower the pe settings so that it kicks in around 60 tps and hysterisis map to around 50.

Small blips like that arent actually knock, its the pcm acting premptively to counter knock before it actually occurs. I would also tune the tip in kr settings reduce em by around 30%.

Are you still using the maf? Inj pw?

 

for what it's worth, i stated there's "audible" knock, it's not pcm pre-empting.


as for fuel pressure, i'm gonna get that checked, and we'll go from there.

 

Remember now, this is FI! pe enrichment rate to 1, is that 1.00? Mine is set at
.0195. Big difference. Also, my map hystersis is st 6kpa, big difference again. Not trying to hijack your thread, but I'm trying to learn all I can.