Some progress . . .

-Ltrims are down closer to 0.0 and much tighter together.

-light blue ( bank 2 ) o2 STFT's are way messed still. Im still gettng the knock sensor codes and both left and right bank "02 sensors not switching" codes.

-At WOT Im getting 9.5 - 10.5 degrees of timing .


Next Im going to run my EWP through a reley off the battery instead of straight off the ignition wire and see if that cleens anything up and switch the o2's side to side.

I have a new huge atap that really shows how ****ed the 02's are reading . . . .any takers ??

 

Send me the atap for sure. I want something to do tonite. I'll spend some time helping, looking at your earlier files too. I just got busy yesterday.

SEND NOW!!!

 

Btw, I had to grind part of my K on the drivers side cuz it rubbed. You can't miss it if it is doing it.

 

I agree. My headers were touchig at WOT and it felt like I had solid mounts...you could feel vibration throuout the whole car.

 

Kewl you just saved me some time grinding . Im definatly not smacking it if its something you can hear / feel inside the car. I just had another look at it and here isnt anr rub marks or fine scratches that would indicate contact. . . .

I just swapped the o2's from bank to bank and Ill se what that does.

ChriSS , sending now thanks man !!

 

Couple pics of my messed up o2's

http://www3.telus.net/public/a7a74501/techa.jpg

http://www3.telus.net/public/a7a74501/techb.jpg

http://www3.telus.net/public/a7a74501/techc.jpg

And my messed up timing

http://www3.telus.net/public/a7a74501/wot.jpg

http://www3.telus.net/public/a7a74501/wotb.jpg

 

those o2 shots are fine cuz at cruise or idle TPS you expect them to fluctuate from 100 to 900 like that. They wont read the same either. You can only compare O2s at WOT and see if they are close together, and even that is pushing it given their inaccuracy.

You should fix your timing issues first then worry about your air fuel. Your timing at WOT is probably ****ing up your AFR as read by the O2s anyway.

remember, your knock sensor codes are what is killing your timing by dropping you down to the low octane timing table. Fix your knock sensors and go from there.

 

Hey Craig,

Im working the knock sensor thing I just want to make sure Im getting 100% of the picture . . . I found this when looking into the knock sensor codes . .

I seem to remember Bunker mentioning the low maf readings when he looked at my taps . . . . kinda raised my interest a bit so i did some more digging and found alot more info on the pcm . . . .its easier to check so Ill poke around.

Ill proably end up ordering a new sensor from gm . . .. maybe I should try for warranty

 

your readings do look low now that you mention it.... you didnt wreck the MAF with a big dry shot did you?

Not sure how that explains knock sensor codes tho...

 

If you need to try a new MAF i have a stock one you can try out.

 

Thats a thought , just how low is it reading compared to normal ?? . . . . . . I checked the pcm and it all "looks" ok ( no burnt pins like noticed by others )

Thanks Chriss I may have to take you up on that. . . . what maf are you running now ??

If the maf itself was really screwie wouldnt I see a code ?

 

for a cam/headers car I'd expect to see 300 grams/sec at WOT at 6k+ rpm. Thats roughly what I get on my car.

BTW your O2 and MAF grams/sec readings look pretty good on the last 2 screenshots - maybe even a bit rich runnin .900+. Your light blue O2 is reading consistently higher then the other bank... swap em around and see if that changes (or did you swap already and notice a shift?).

Fix your knock sensors/timing and you should be good to go.

 

I hope so Craig . . . Im hoping the top end power shows up when this is all figured out. There is ZERO power above 5500 rpm right now which is no good or a 116lsa cam . I was told she'd yank you back till 6700 ( rev limiter permiting )

You edited your post

I just swapped the o2's today and havent had a chance to drop her down and check it out . . . they looked ok . . . like 02 sensors . . . . and they sound like 02 sensors when you shakem

 

K im pretty close to 300 grams here . I notice I shift really early with the way its running . This ones at about 5800 rpm's.

 

I have a Granatelli unit I use currently. I'll likely go back to my stock one in the future with a blower, but right now its just sitting in my cupboard.

I just read over your 1+ hour logs. I see nothing wrong with O2s. You're rich, but the exact same readings as me, and bang on for LTs in my opinion. High 11 AFR I think. Not a serious issue.

Your KR issue is interesting. I saw five WOT runs (did I miss some?), and in your first run you had 4 degrees for the short run you did - consistently. Then the next two runs there was no KR at all (well, maybe 0.6 for a split second, but thats ok). Then the last two runs, back to 4 degrees bang on and steady through the gear shift. That is weird enough to suggest a bad knock sensor, or damage to the harness. The fact that it comes and goes, and stays right on 4 degrees is very suspicious. So focus there.

Your timing was slightly better on the runs w/o KR. Actually, almost normal, starting at ~23 degrees (slightly low still), but oddly enough tapering off as the rpms climbed when no KR. I find that weird. Completely expected though is the sensors are pulling timing as the rpms climb.

I assume this is not the same tank of gas you've been using, correct? You've added 94 and made logs similar to this with a fresh take?

Can you with EFILive disable the Knock sensors when running? If the sensor is bad, you will get a beter reading this way. I know I can do it with edit, but not sure of EFI...