I'm getting knock with meth...

[ddlopes]

I ordered some Boostane to add to my fuel to see if the 93 pump gas or meth is junk. Hopefully it'll come in today.

Interesting things to note.. after cutting the data before the high speed and after the high speed (attached to post) I can see up to +7kr .. BUT it only occurs after shifting. 

during the non-shift WoT your only hitting 18spark on average but it is stable.. it is low for meth in my humble opinion but it is behaving as it should.

what is your elevation ?

others will need to chime in but this looks like a tuning issue or a fuel quality / meth quality issue or issue with meth delivery issue with the nozzle..

[FoMoCoSHO]

I ordered some Boostane to add to my fuel to see if the 93 pump gas or meth is junk. Hopefully it'll come in today.

Interesting things to note.. after cutting the data before the high speed and after the high speed (attached to post) I can see up to +7kr .. BUT it only occurs after shifting. 

during the non-shift WoT your only hitting 18spark on average but it is stable.. it is low for meth in my humble opinion but it is behaving as it should.

what is your elevation ?

others will need to chime in but this looks like a tuning issue or a fuel quality / meth quality issue or issue with meth delivery issue with the nozzle..

I don't think octane is the issue, your fueling is out of whack.

The car cant pull enough fuel fast enough to hit your targets.

Lack of meth atomization could be an issue so I would check that nozzle flow.

[ddlopes]

I pulled the throttle body plate off and put the car under boost. The nozzles had a good flow pattern. So I don't think that's an issue. I've checked everything I could think of. I'm out of options which sucks.

[ddlopes]

Maybe Brad will chime in on his thoughts...

[StealBlueSho]

I ordered some Boostane to add to my fuel to see if the 93 pump gas or meth is junk. Hopefully it'll come in today.

Interesting things to note.. after cutting the data before the high speed and after the high speed (attached to post) I can see up to +7kr .. BUT it only occurs after shifting. 

during the non-shift WoT your only hitting 18spark on average but it is stable.. it is low for meth in my humble opinion but it is behaving as it should.

what is your elevation ?

others will need to chime in but this looks like a tuning issue or a fuel quality / meth quality issue or issue with meth delivery issue with the nozzle..

So there is something funky there.. for sure... you are not running a ton of boost and spark is conservative but you are pulling 8 degrees of spark...

IE. You are commanding 196.98kpa of boost (13.87psi) and hitting 19 degrees of spark on the multigear run and 23 on the third gear pull.. Brad has mine at 205kpa (15psi) and 28 degrees of advance and I have no knock retard.

So its normal to run a little richer than the command AFR when the meth starts spraying as it takes a split second for the ECU to pull the data from the widebands and make fueling adjustments. You are pulling about 15% fuel through the widebands but combined with your LTFT you are really only pulling around 11%.. which is NOT bad for spraying meth... I usually spray a bit more more than that..

What stands out is obviously the 8+ degrees of KR but how the meth is being delivered... its very inconsistent.. at least on bank 1.. the widebands should have a pretty linear appearance through the run (unless you are using the throttle to control load which you are NOT).. example would be that on the 3rd gear pull your wideband has a pretty gnarly upturn and i don't understand why.

It would be beneficial to see what bank 2 looks like honestly. Unless you are direct port meth like ZSHO, then bank 1 tends to get more meth than bank 2.. bank 2 could not be getting much spray so its knocking? We would need to see a log with bank 2's stats... Wideband (STFT and LTFT) along with lambase and lambda.

I don't see a fueling issue here from the standpoint of HPFP, LPFP, and how your car is reacting to the spray its getting. COuld it be a bad tank of gas? I have had this happen... scary as F when spraying to get a bad tank of gas...Maybe bad meth? Are you running 100% meth?

At this point, I am pretty sure the pump appears to be working.. but we need to see bank 2.

[StealBlueSho]

Tooks some screen caps of what I am talking about.. the first picture is a 3rd gear pull from mine... notice the blue line is pretty linear once its stabilizes? Thats my wide bands..

the other screen cap is yours.. your wideband is the gold line..

the delivery is not smooth... still don't see why you are pulling that much KR...

[StealBlueSho]

I ordered some Boostane to add to my fuel to see if the 93 pump gas or meth is junk. Hopefully it'll come in today.

Interesting things to note.. after cutting the data before the high speed and after the high speed (attached to post) I can see up to +7kr .. BUT it only occurs after shifting. 

during the non-shift WoT your only hitting 18spark on average but it is stable.. it is low for meth in my humble opinion but it is behaving as it should.

what is your elevation ?

others will need to chime in but this looks like a tuning issue or a fuel quality / meth quality issue or issue with meth delivery issue with the nozzle..

I don't think octane is the issue, your fueling is out of whack.

The car cant pull enough fuel fast enough to hit your targets.

Lack of meth atomization could be an issue so I would check that nozzle flow.

The meth atomization is probably a good thought, which is why i am curious about bank 2... I wonder how its trims look compared to bank 1... if its not atomizing well enough, then one bank will be getting a piss pot full of meth while another is probably not...

Its typical on meth cars to run rich briefly while the ECU's catch up to the WB's information... keeping the throttle wide open alleviates this to some degree... Brad and I were working to get that resolved but messing with the speed density tables messes with a whole lot of junk on the 2010-2012 cars... It messes with the load calculations which I suspect a lot of other adjustments that the ECU makes are derived from.. shifting points was one of those...

[ddlopes]

I'm kinda hoping its bad gas and that the boostane wiill fix the issue. I'm running Mobil 93 octane and VP race fuel M1 at 100%. I don't know why the bank 1 is getting inconsistent meth. I'm wondering if I'm injecting to close to the intake and it's not atomizing enough yet.

[StealBlueSho]

I'm kinda hoping its bad gas and that the boostane wiill fix the issue. I'm running Mobil 93 octane and VP race fuel M1 at 100%. I don't know why the bank 1 is getting inconsistent meth. I'm wondering if I'm injecting to close to the intake and it's not atomizing enough yet.

If you suspect its bad gas, I would just detune it until your next fill up... if you have E85 around, you could attempt to throw a couple gallons into it. I had to do that once when I got craptastic gas once. Just monitor your fuel pressure if you do... you don't want to knock with the low fuel pressure... actually... just detune it.. as much KR as your are getting ignore my comment about E85... lol

[glock-coma]

If I remember correctly bank 1 is the firewall side and bank 2 is the radiator side.
I know when I got my induction cleaning done on my intake manifold the #1 cylinder was completely spotless while the others still had some deposits left on them.
Which leaves me to believe a majority of the cleaning agent was sucked in here. Which might be the same case because of the throttle body adapter your using.

[ddlopes]

Where did you guys install your nozzles?

[ddlopes]

Here's the second meth tune... it looked much better I think.

[TopherSho]

Where did you guys install your nozzles?

*Typically* in the hot pipe about 4 or so inches from the thottle assembly..

show us a pic of your nozzle placement when you have time.  the Atomization idea has legs, or impacted diversion of the spray does as well. 

[ddlopes]

Here's a pic of my throttle plate setup.

[StealBlueSho]

Wow... looks impressive... but you are literally spraying AFTER the throttle... not saying that's right or wrong... but there is no time for atomization to happen...

Now I am really curious about bank 2...


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