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it was making its way up, i turned it off a few seconds later because it started spraying the headers with oil.

https://youtube.com/shorts/SpYemxoWIfM?feature=share

short video of it running with the valve covers off.

yeah that is where i notice it, at a higher load mid rpm, someone just asked for a wot.

so is that what a miss looks like on the o2 sensor? a sharp spike?

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there is a short wot run at the end.

i might be wrong on the 20%, it was in the green on the gauge. its was a very inexpensive tool, and i struggled with it because input air pressure really changed what the readings where. you turn...

i did do a compression and leak down test and everything seemed good. leakdown was less the 20% compression i think my lowest was 189 highest was 220.
did them all cold with cheap amazon tools,...

also timing chain was new.

i'll have to get wot log. i thought i had one but guess i didnt save it.
i've tried 2 and a half sets of plugs so far. swapped some here and their when it seem to point to specific cylinder, then...

lifter are new along with the dod stuff is all gone.
it starts good, sometimes feels a little lazy but still tweaking on that. it use to flare up way to much.
i've popped the valve covers off a...

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here is a longer drive. i made some timing changes and turned long term fuel trims back on.

timing change seemed to jack up my fueling a little but really dont want to retune till i get...

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i've been battling this hesitation/missfire for a while now. cars a 08 g8 gt. bolt ons, cam, dod delete....


seems to only do it under a higher load, and you can feel it...

did you figure it out? i have a similar issue. drives fine but higher load mid rpm it starts stumbling. miss fire count seems to be random and not specific cylinder.

sorry meant to put this in gen 4

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trying to find a part throttle miss, and my history missfire count clears out after a few seconds. is there a setting thats controls that? i added both current and history to the scan.

I did specify in the 1st post that their was a leak so ignore the wideband input.

thats because its reading my wideband and its way downstream from the factory o2. there was a few leaks near it that i have fixed since that recording.

any thoughts on this. makes me think its to rich but the o2 dont show that. anything mechanical cause this?

thanks for responding, got busy on another project. now back to this.
on the air and torque is there any error table to add to my logging similar to the spark error?

should a car be able to idle with spark correction turned off if its tuned properly?
trying to figure out why if i leave it idling for awhile 5 or so minutes it eventually starts searching over...

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i'm having a part throttle miss or stumble. really sounds like a two step... hear some popping through the exhaust and feel a slight stumble.
seems only to happen at medium...

thats just 17 added to the factory table. this is a e38 2008 g8

oh yeah i needed to do the difference that makes sense.
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so i guess this is what i should start with.

did you leave all the normal ect and rpm alone?

i know this is old, but with that math, say my stock cam is -12 and my new cam is 5. so would i subtract 7? since the number is -7 or would i still add?

what did you change on the eoit? did you just add to the normal rpm table?
trying to get my eyes to stop burning when i drive my car lol

i'm running a 224/232 111

i have a 2008 g8 cam is a 224 232/111
i've done some tweaking on it, it drives fairly well but been battling a part throttle 2-4k rpm stubble. you can hear it popping through the exhaust.
that...