knock and O2 question

[Emptytoys]

Hey guys.
I have an odd stiuation. When I go wot or not even wot, my O2 drops as in it flatlines. This doesn't happen all the time, and it is a new sensor (NTK)When this happens I get knock, but again not all the time, so maybe it isn't related??
I am running a ported 14b, a 190 pump and 760 injectors with a 2G mas.
I should be able to run 20+ boost with no knock with this setup right??
Well now I am only running 15-18 and I get like 30 counts sometimes, sometimes timing is pulled and other times it isn't. I think a good portion of this may be PK?? I am also wondering if my pump is crap? It didn't whine when I put it in for like 3 months, then started whining all of a sudden. Now somedays it whines, some it doesn't. I am wondering if it just can't keep up??
I am tuning with just an old school safc but it should be good enough to get rid of the knock even if it gets a bit rich. Fuel trims are usually good, in the 90's. But I seem to be messing with it everyday.
Now I have done all of the normal stuff, plugs, wires, check for boost leaks etc. I am also burining a bit of oil, it is valve related and will be fixed soon, kind of hoping this is the major cause?

Any comments, suggestions, stupid remarks are welcome

Matt

 

[Emptytoys]

Anybody???

 

[Blk_99gst]

Originally posted by Emptytoys
Hey guys.
I have an odd stiuation. When I go wot or not even wot, my O2 drops as in it flatlines. This doesn't happen all the time, and it is a new sensor (NTK)When this happens I get knock, but again not all the time, so maybe it isn't related??
I am running a ported 14b, a 190 pump and 760 injectors with a 2G mas.
I should be able to run 20+ boost with no knock with this setup right??
Well now I am only running 15-18 and I get like 30 counts sometimes, sometimes timing is pulled and other times it isn't. I think a good portion of this may be PK?? I am also wondering if my pump is crap? It didn't whine when I put it in for like 3 months, then started whining all of a sudden. Now somedays it whines, some it doesn't. I am wondering if it just can't keep up??
I am tuning with just an old school safc but it should be good enough to get rid of the knock even if it gets a bit rich. Fuel trims are usually good, in the 90's. But I seem to be messing with it everyday.
Now I have done all of the normal stuff, plugs, wires, check for boost leaks etc. I am also burining a bit of oil, it is valve related and will be fixed soon, kind of hoping this is the major cause?

Any comments, suggestions, stupid remarks are welcome

Matt

I don't have too many sugguestions, sounds like your doing things right. I would say maybe you need an oem o2 sensor; or how old is your knock sensor. It could be giving false readings and screwing everything up.

Also I say ditch the old safc, and get at least the normal safc, or the new safcII. Another good thing to do would be to try to return a little back to stock. You could put the stock injectors back in, but if you don't have the stock 1g maf and still need to run the 2g maf, then you are still going to have to play with fuel control. If I were having your problems, I would return back to stock maf and injectors, reset the ecu and let it control everything again. Then see what o2 and knock count looked like.