Both tunes mostly showed only a few knock counts. There was one log with 5 knock counts. Without seeing the AFRs, my guess is that it just needs touchup with the new injectors.

 

the injectors were installed after the car was originally tuned, then it was retuned for the injectors through email (RaceGas Original tune). it was later retuned again on the road by a second tuner (Current Tune Logs). also, the Original tune logs were done with a 50/50 93/109 octane mixture. it seems to me that if it were real knock, the differences in the tunes and fuel should mean that the knock shouldn't be in the same place and at close to the same levels on every pull.

that's just my thinking, but I'm new to all of this, and still trying to learn. thoughts?

can anyone comment on the logs where I'm sitting still and just revving and STILL seeing knock on BOTH tunes, WITH AND withOUT race gas?

also, has anyone given any thought to why that #1 cylinder is so clean and shiny?

 

your above post stated that you were tuned with a 93/109 mix... and now your running straight 93?


and your clean piston is due to coolant leaking into your cylinder...

 

no, I was tuned on straight 93 both times. I just mixed 93/109 to see if the knock would go away with race gas. the tunes are called RaceGasOriginal Tune because it's the original tune (first time the car was tuned when the knock started), and the pulls were done on the racegas mix.

also, as i've said before, my coolant isn't leaking. I topped it off almost 3 weeks ago now and it's still at the exact same level. i'm also not getting any steam out of the tailpipe. even on a morning when it was 24 degrees out, there was barely any visible exhaust. there are no signs of a coolant leak anywhere. no coolant in the oil, or oil in the coolant.

the spark plugs also show no signs of detonation. they all look good across the board. all 4 look pretty much identical. I looked at them, as well as two tuners, and some other people there at the time of the second tune.

can anyone comment on the logs where I'm sitting still and just revving and STILL seeing knock on BOTH tunes, WITH AND withOUT race gas?

is the knock voltage an indicator of false knock in this case?

also, has anyone given any thought to why that #1 cylinder is so clean and shiny other than a coolant leak (because I can't find any evidence of such a leak)?

I did a compression check and all the cylinders were very close to each other. I will do another one tomorrow just to make sure, but the numbers came back good.

there has been a lot of trouble shooting so far, that has been discussed over the first 4 pages of the thread. I'm looking for new ideas and places to look for a solution.

 

I didn't see any wideband info in your logs. Do you have a wideband? If yes, do more logs with the wideband included in the logs. If you don't have a wideband, there was no way for the remote tuner to know AFR to any reasonable degree, and your AFRs could be off.

 

That seems to be the cylinder that recieves the least/most air or something. Cyl. #1 or #4 seem to be the ones to give out. I will try to look around on here and dig it up. I think that most of us owe something to the community.

 

the car was just retuned with a wideband. the logs called Current tune, were the ones with the new tune. the tuners did with with a wideband and the car was knocking it's *** off. they adjusted the knock sensor tables during the tuning process to get it to stop picking up knock, but then we found that clean cylinder.... so I want to make sure that it's not actually knocking, but just picking up noise.

that's what this whole thread is about. just trying to rule out real knock, or diagnose it if it's happening. they adjusted the AFR's, and logged them all with a wideband during the tune, so I have to think that the AFR's are okay. I don't have a wideband to log these myself though.

would it help at all if you looked at the roms from the tunes?

 

Confused. Where is your wideband? How do you have a tune without a wideband? Maybe I am missing something. Also you're logging almost every parameter possible. No need for 20 items to be logged.

 

okay, I'm not trying to be rude, but please read at least part of the thread before posting. it's very counterproductive when I have to repeat the entire first 4 pages every time someone new comes into the thread.

the tuners have widebands. I did not tune the car. the entire story of my issues are on the first page.

 

So after 172,000 miles you haven't invested in a wideband. You have no idea where your a/f is.

I am not new to your thread. Just trying to help with the obvious. Stop wasting money on race gas and other things. Install the new knock sensor when it arrives and buy a wideband. Don't rely on a tuners wideband.

I would bet you that $5 that it's your knock sensor.

 

I'm hoping it's just the sensor, but the knocking isn't the only issue.

I'm still trying to figure out why i've got a clean cylinder.

as for the wideband, since when is not having one a sin? the car has been stock almost 100% of it's life. the only time a wideband is really needed is during the tune, and the tuners have them. would it come in handy now? yes. is it completely necessary? no. I saw the AFR's when they were logged during the tune and they were fine. they wouldn't just suddenly go bad as soon as the widebands were disconnected.

I don't think it's an AFR issue. I think it's phantom given the fact that I got 15 counts of knock today sitting still and revving the motor.

no one has commented on that, the knock voltage questions i've got, or possible other issues that could cause the clean cylinder.

the race gas wasn't a waste IMO because the car is still knocking even with race gas. that's done what I wanted it to...show me that it's most likely phantom. I can't seem to get anyone to comment on that either it seems.

 

I have you leak down tested the car? Maybe coolant is being pushed through. Blown headgasket are not all the same when they go.
Knock sensor > leakdown test > boost leak test

You changed your injectors. Eventhough you got them scaled back I missed the part where u went back to your tuner for a af check.

Not being a dick, just trying to help.

 

another tuner came to my area and retuned the car after that. a boost leak test was done, and the car passed perfectly. I haven't done a leak down test yet. I honestly don't know how lol. I will have this done in a few weeks when i take the car to have the timing belt replaced again. knock sensor is still in the mail.

as for the head gasket...if it were leaking, wouldn't i see a change in the coolant level?

also, i appreciate the help, and I wasn't implying that you were being a dick, it's just frustrating to have to repeat everything I've done to this point over and over.

 

You would eventually see a drop in coolant levels. Depends on how big the leak is.

 

You don't think it's an A/F issue. ...what are your AFRs? What are they supposed to be?

Do you have Lean Spool disabled?

I think the 1 clean piston is fishy...what's up with that?

I don't know what would cause that but I think that's what you should be looking into.

An obvious mechanical problem. Running the race gas and continuing to knock only rules out too much advance...right?

If there is a mechanical problem (HG leak, bad injector, bad fuel pump etc.) Then all the race gas in the world won't cure it ya know?

Just throwing some ideas out there man.