Knock retard

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waltheraustin
Posts: 21
Joined: Tue Dec 13, 2016 11:46 pm

Knock retard

Post by waltheraustin »

put the modify stock tune on with same parameters then did some logging. Right away the knock retard was much higher than the 87 tune. Instead of split second of 1-2 at the highest, I was seeing 3-4 for at least a second at a time. Is that indicative of an issue that the 87 tune is fixing? Going back to 87 tune for now but that seemed alarming. Any insight is greatly appreciated l!!

With the 87 tune, seems it is giving me a little more now too than earlier but seems to be less as the engine gets warmer.

What's normal?

No knock retard at idle or in neutral with same rpm as before
waltheraustin
Posts: 21
Joined: Tue Dec 13, 2016 11:46 pm

Re: Knock retard

Post by waltheraustin »

waltheraustin wrote:put the modify stock tune on with same parameters then did some logging. Right away the knock retard was much higher than the 87 tune. Instead of split second of 1-2 at the highest, I was seeing 3-4 for at least a second at a time. Is that indicative of an issue that the 87 tune is fixing? Going back to 87 tune for now but that seemed alarming. Any insight is greatly appreciated l!!

With the 87 tune, seems it is giving me a little more now too than earlier but seems to be less as the engine gets warmer.

What's normal?

No knock retard at idle or in neutral with same rpm as before
It's quite around here for a popular tuner. Is there another place one should go with questions?
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06MonteSS
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Re: Knock retard

Post by 06MonteSS »

I have never seen a vehicle that had no knock retard at all, even on stock factory tune.. so yes, having some knock retard on the stock tune is normal...
06MonteSS / DiabLew Tune
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2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
waltheraustin
Posts: 21
Joined: Tue Dec 13, 2016 11:46 pm

Re: Knock retard

Post by waltheraustin »

06MonteSS wrote:I have never seen a vehicle that had no knock retard at all, even on stock factory tune.. so yes, having some knock retard on the stock tune is normal...
Thanks Lew! I see all kinds of misinformation on the webz but take your word as gold. Where I see blips of knock retard are on the lower gears around 1800 rpm but I guess that is normal. Hope to hop on the custom tune soon
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06MonteSS
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Re: Knock retard

Post by 06MonteSS »

especially if you're at a low rpm but in a high gear and are lugging the engine, you will most definitely see some.. shouldn't really have a lot at WOT when getting on it.. if you are, then the timing/fueling for WOT should be adjusted..
06MonteSS / DiabLew Tune
Image
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
waltheraustin
Posts: 21
Joined: Tue Dec 13, 2016 11:46 pm

Re: Knock retard

Post by waltheraustin »

06MonteSS wrote:especially if you're at a low rpm but in a high gear and are lugging the engine, you will most definitely see some.. shouldn't really have a lot at WOT when getting on it.. if you are, then the timing/fueling for WOT should be adjusted..

Got it, thanks Lew!
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