dragonxbreath

my knock readings have progressively gotten higher and higher even after a retune 3 days ago...anyone know what might cause a knock to progressively get higher? it hit right around 100 at one time

cewrx7r1

iTrader: (2)

NOISE! Somthing is loose and or hitting or rubbing something.

dragonxbreath

something loose like what? cause i was looking and i'm like dumbfounded right now :/

cewrx7r1

iTrader: (2)

Time for you to open your mind to all posibilites or noise, and LOOK!

dragonxbreath

well crap...would pre-detonation also cause this?

cewrx7r1

iTrader: (2)

But that would require a very carboned up engine or reverse plug wires or basd fuel, or plugs too hot.

Colder weather makes an engine produce more power and if the engine was tuned "HOT" in summer, it will be too hot for winter. An engine tuned for low knock in winter will be safe in summer. An engine tuned for low knock in summer may be unsafe in winter. But then real tuners should know this!

Silver7even

Do you have a plot of the knock event like these 2 charts below? What I learned from these charts is that my car knocks a bit more untill the water temperatrure gets up to ~85c. The chart with 78 knock is at 81c, later at 85c, at much higher boost, I get no knock. What is your boost, AFR, temp, IGL and %INJ duty at when you see knock?

Rx7_Nut13B

iTrader: (1)

It could be that you need to pull some timing out of the cells that the knock is in, but have you seen that Inj duty cycle, injectors start to fail in that range. Need to get bigger ones

cewrx7r1

iTrader: (2)

THe bost and AFR on the first one are very different than shown on the second.

Silver7even

Right, The first is during warm up, not pusing it very hard, getiing a bit of knock, the second is warmed up full power, no knock... What causes higher knock when not fully warmed up?

Silver7even

Here is a map of max INJ duty, does this mean I should go to 1200cc injectors on the secondaries?

What is the likleyhood of my current set up continuing to run w/o failure? What happens when injectors fail?

cewrx7r1

iTrader: (2)

Anything over 90% DC is bad for thje injectors. And why are you at 10AFR for the boost log? I run 11.2AFR for 14-15.5psi boost. That is too rich.

Silver7even

Good question, I was trying to be conservitive at the far extream, do you think I should lean it out at the outer edge, see attached

cewrx7r1

iTrader: (2)

Go back and look at the AFR/FUEL Excell worksheet in the notes.

dragonxbreath

im going to post some of my datalogit info up tonight to see what u guys think