Cowtipper2016

Help please! Knock issues detected with btssm

19 posts in this topic

So I discovered the wonderful world of btssm and am loving it so far ... however when I had reset my ecu I had noticed a couple knock issues detected ... done just over 1000km since the reset on mostly highway conditions as well as some spirited driving over the maungamuka gorge (the log data linked shows the 8ish minute long and fun drive) ... after reading the log and checking my LV I am abit worried as most of the knocks come on at 4500rpm ... now it appears the LV has knocked my ecu down a few notches in the way of power... 

 

First off I am curious as to how this would happen on a bog stock 2006 JDM legacy gt spec b 6sp manual ...

 

From my understanding this year was the change over year for example my turbo is supposed to be a td04 (from what i have read) but is instead a vf45 ... also being stick max boost target is 14.5 however I'm getting spikes up to 17 in some cases but more commonly around 15.5 for longer than a second 

 

Any help or suggestions are much appreciated 

 

Thanks 

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Wouldn't be super concerned about the knock. Without a tune for the fuel we have in NZ it'll never be perfect. A degree here and there isn't major

You want to post up a LV snapshot from BTSSM

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Learning view snapshot is key.

 

You will get some knock on nz fuel, normally you get a few events that the ecu learns around, pulling a small amount of timing here and there.

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Not bad at all. About where i'd expect to see a little knock for a stock tune.

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that left hand side avcs is bloody slow. pull avcs banjo filters, possibly a sensor starting to poo the bed

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thanks ill check that tomorrow .. just to be sure when you say left you mean passenger side?

 

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yeah, they normally reference from drivers seated position iirc

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sooo ... i did an oil change using good ol golf 10w-40 and stp oil additive which is essentially a zinc mix and make the oil stick to the walls abit better .. checked that banjo bolt which was one hell of a bugger to remove so i just unscrewed it to have a quick look before putting it back in .. when i was putting it in i punched a hole in the side of the filter .. thought stuff it ill just put it back in as i need the car running (its a daily for the misus) ... gave it a quiet run for abit till it warmed up then done a pull from 0 to speed cut .. results are below .. looking over them it didnt make much difference however i see the exhaust vvt on right bank is doing the same damn thing  

 

New Btssm run sincee oil change 0 to speedcut

 

Thanks guys for your input

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Dont add zinc to the oil its not a dirty old v8. Try a 5w30 full synthetic.

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I will try that on my next service in a couple weeks thanks @evowrx ... coincedently i have just finished building an 87 VL v8 wagon haha ... it's my weekend burn out machine 

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1 minute ago, Cowtipper2016 said:

I will try that on my next service in a couple weeks thanks @evowrx ... coincedently i have just finished building an 87 VL v8 wagon haha ... it's my weekend burn out machine 

 

Not saying that will fix the issue but it may help.

 

Mangamuka not a bad drive. Guessing if youre local there worth noting theres only 95 which explains the knock count.

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i was a local there haha .. its my home town so was just up there to visit family and friends .. but for an AWD the gorge is excellent for running through as it pushes every limit the car has .. I actually live in Atiamuri between Taupo and Rotorua where there is an excellent gull that has 98 .. of all the terrible reviews saying Gull is bad and to use the likes of BP or Mobil i dont understand why as is see BP/Mobil branded fuel tanks filling that service station up from time to time 

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Only reason people don't go for it is it's not a traditional 98 octane fuel, it's 91 or whatever with 10% ethanol to raise the octane rating up to 98. 

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19990225_1965235253502116_72587065944257

 

*update* ... 2500kms into a new oil change including resetting the ecu (via Btssm) this is what i got .. pretty happy with the results ... nothing has changed in the way i use fuel or where i buy it either 

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55 minutes ago, Andy_Mac said:

Looks good. When was the last ECU reset done? 

at the time of the oil change .. so 2500ks ago ... considering that first one had 1000ks on it im picking the fuel i got up north was S*** 

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