No problem -- hope my suggestions help! :tiphat:

Can you also make adjustments after datalogging?

Can you give me a screenshot of what variables you can datalog -- I might be able to point to some key ones to record.

Also, how does ECUtek record knock events? What does the actual output look like?

I'm sure one of us can help pin point it. One easy thing to check is to see what looks different in the various maps between a stock settings map and yours. Anything changed at part throttle would certainly be suspect. It could easily be poor VVEL settings.

If its not actually knocking, but rather some other thing is making a noise (which, BTW, can still fool the ECU into thinking you are knocking, as it just records a given deviation from recorded engine resonance, and if it passes a certain threshold, is logged as knock) then it could also be an unusual spot of valve chatter, or if you have a 7AT, a cracked flexplate -- a few folks have had that happen, and it both sounds like knocking and fools the ECU too.

This is the most overkill thread I've seen.

Buy a faster car, buy a cat back, intakes, HFCs, something not water/meth.

If you NEED higher octane still, do Toluene mix, not xylene. Toluene doesn't need additives

He needs a better tune.

Or stop trying to nickel and dime horsepower and spend the money for the right mods.

It sure helped. :tup:

With EcuTek, there is no option like the Uprev tuner license which let you adjust some few factors and tunes. Only a pro tuner who is licensed by EcuTek can do that.

Check the log attached, it's a 4th gear pull was taken with the regular 95 RON pump gas. Generally it looks good but the tuner tuned it based on the quality and the Octane of the gas which is the limiting factor for more improvement.

You can check the knock corrections occurred during the pull. If there is less or no correction, more timing can be added.

I will also try to log the low RPM knocking to get plenty of data which would explain these weird knocking events.

I usually open the files on an Excel sheet. Don't know if there is any other programs can show the logs better.

It's not that overkill when I only have few options available in my case. It's not that I'm not happy with how my car performs. I like the G more than any other car in its class. Just want it to put out more and see the outcome. Aren't most of us modding for the same reason? plus a little drag racing fun :driving:

I've already had test pipes installed. And Z1 CAI kit will also be installed soon.

I'm just not satisfied with the tune as I've spent about $850 for only 3 WHP max!. The tuner couldn't help more because of the low Octane gas here. So this what got me to think of this mod. Believe me if I at least can put my hands on a 93 AKI gas, I would've completely ignored the idea of the water meth injection.

I also can't buy Toluene or Xylene. They're not licensed for individuals :gtfo2: . But it's ok to grab a big drum of Methanol. Paint thinners here contain small amount of Toluene. Other types contain white Kerosene and some alcohol. Can't find anything contains Toluene or Xylene on any market shelves.

I could get a cat back and not even ask about any brand because the forums are already full of threads about them. I'm just trying to do something unique hoping to get good results that maybe some people would find it useful.

Which can only be done with a higher Octane gas.

I've already spent the money on the right mods. But the last mod (EcuTek) still has some potential that needs to be released.

Check this out: HorsePower Explores the "Chemical Intercooler" | HorsePower | PowerBlockTV - Full Episodes

No. You can have it tuned for lower octane. My Z has 2 tunes. One for 93, and one for 91 octane.

It's already tuned for the available high octane here. And the results were poor and not justifying how much the tune costs. So if I want a better tune, I need a better octane gas.

What I've read so far from almost all the people who tuned with EcuTek that the gains were great over the stock or even Uprev tunes. But what I've gained with EcuTek over the stock is just ridiculously low.

Read what you just wrote. You need a better tune from someone else.

Let me point something out. The first tuner who tuned the car was John Visconti. The second one is Sebastian @ Specialty Z who I consulted about the tune and he literally said that "the engine knocks rather easily. This is why it's not making more power". And then he suggested "to run higher Octane and perform another WOT log. Check the knock corrections. If its OK and you get 0 correction try running a more aggressive map and repeat logging". And I did that. It's all written in the OP.

Now both John and Sebastian pointed out that the fuel is the issue and no more power can be added unless I run a higher Octane fuel, I guess this is a good reason to look for such mod.

I asked Sebastian about the water/meth and this was his opinion: "We don't like water\meth because of the negatives it can bring, more so on a forced induction application. On an NA I've never tried it to know how well it may work. It would definitely help with knock and keep temps cooler. May not be a bad idea. There is less risk on an NA engine as well."

Looking over the log...

So, hottest intake temp was under 90* F? You definitely shouldn't be knocking. There's a little difference between bank 1 and 2 on various things, but that's normal. Nothing looks immediately out of line -- although I am not sure what VVEL values are desirable vs. load...

Where did you hear knock? I see time but not RPM...

Wait -- I see where it's pulling timing I think.

EDIT:
Hmm. I think wherever its pulling timing, have it re-tuned so it doesn't need to. Nothing is leaping out at me as looking amiss. You might just be running too much timing at certain places. I'm still not ruling out that you aren't actually knocking tho...

It will be easier for me to try and pinpoint what might be the problem if I know whereabouts in the log to focus.

Hey,

It's been some time since my last show up. Been busy on a lot with vacation and so.

Thank you to take some of your time to dig into the logs.

I'm sold in the water meth and I'll be getting the AEM kit soon and set everything up. Will also let Sebastian re-tune the car with the addition of the water meth and also some other mods that I'll get into later on once everything is installed and set up.


I've already drilled the Z1 intake pipes for the injection nozzles to be installed for the water meth installation process.


Stay tuned.