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      12-06-2012, 11:09 AM   #1
EastCoast335i
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Cobb Datalog Advice

Hi still new to reading datalogs, but how does this log look?
Im getting some timing pulls across all cylinders but nothing more then -3. (maybe time for new plugs, its been about 20k since they were last changed)

My concern is the HPFP/LPFP req PSI and the HPFP/LPFP actual numbers.

Is it ok that my actual numbers are alot higher then the Req numbers?
Thanks!
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      12-06-2012, 12:08 PM   #2
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This is the E30 maps, correct? I don't like the corrections, they are ~3 but it looks like they are across all cylinders. It COULD be plug related(at 20K it is a good idea to change 'em) but i would recommend running a stronger ethanol mix.

The fuel pressures look ok. The spikes are just the pump doing it's job(it's electrically controlled and that's how it looks regulating fuel pressure.)
It's when your pressure drop below 50 and stays there that you may have an issue.
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      12-06-2012, 02:23 PM   #3
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Quote:
Originally Posted by Ænema View Post
This is the E30 maps, correct? I don't like the corrections, they are ~3 but it looks like they are across all cylinders. It COULD be plug related(at 20K it is a good idea to change 'em) but i would recommend running a stronger ethanol mix.

The fuel pressures look ok. The spikes are just the pump doing it's job(it's electrically controlled and that's how it looks regulating fuel pressure.)
It's when your pressure drop below 50 and stays there that you may have an issue.
Yes OTS e30 map...
I wish there was a standalone system to measure e85 content
I'll try adding more e85, i thought i had the mixture amount e85/93 dialed in...
thanks Anema
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      12-06-2012, 02:24 PM   #4
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Quote:
Originally Posted by EastCoast335i View Post
Yes OTS e30 map...
I wish there was a standalone system to measure e85 content
I'll try adding more e85, i thought i had the mixture amount e85/93 dialed in...
thanks Anema
Where are you buying your E85? Chances are it's Winter Formula so the ethanol content is closer to 70%
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      12-06-2012, 03:16 PM   #5
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Originally Posted by benzy89 View Post
Where are you buying your E85? Chances are it's Winter Formula so the ethanol content is closer to 70%
Rockland County NY...

Yeah its probably E70 blend, but i calculated my E30 mixture using E70 and i'm still a bit off based on my logs. I need to add more E70 and see if that corrects the slight timing pulls im getting.
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