[Tzoo]

Hello guys, So I just tuned my car to stage 2+ v9 acn91 with mhd. Tried datalogging, and noticed a decent amount of timing corrections, as well as lpfp dips from 4k rpm until I shift. Can someone take a look at my logs. Cylinder 1 has -5 timing correction and -2.7 on the other cylinders. Is this normal or should it be addressed? Thanks!

Mods: DCI, 7in VRSF IC, Catless dp, eldor coils: (23k miles), ngk 1 step colder plugs gapped 0.022, occ, chargepipe. Running costco ACN91.

https://datazap.me/u/tommyxu9/log-16...7-8-9-10-11-22

[Saif2018]

Originally Posted by Tzoo

Hello guys, So I just tuned my car to stage 2+ v9 acn91 with mhd. Tried datalogging, and noticed a decent amount of timing corrections, as well as lpfp dips from 4k rpm until I shift. Can someone take a look at my logs. Cylinder 1 has -5 timing correction and -2.7 on the other cylinders. Is this normal or should it be addressed? Thanks!

Mods: DCI, 7in VRSF IC, Catless dp, eldor coils: (23k miles), ngk 1 step colder plugs gapped 0.022, occ, chargepipe. Running costco ACN91.

https://datazap.me/u/tommyxu9/log-16...7-8-9-10-11-22

Looks like LPFP needs upgrading, current one struggling. Anything below 50 isn't good, I wouldn't want to run my LPFP any lower than 60 psi.

Your timing corrections are probably due to acn91 which is horrible fuel.

Running 93oct should reduce timing corrections, if you don't have access to 93oct then you can try running E85 to reduce timing corrections.

I would suggest you fix LPFP issue first though.

In the meantime run less aggressive map like Stage 2.

[Tzoo]

Originally Posted by Saif2018

Looks like LPFP needs upgrading, current one struggling. Anything below 50 isn't good, I wouldn't want to run my LPFP any lower than 60 psi.

Your timing corrections are probably due to acn91 which is horrible fuel.

Running 93oct should reduce timing corrections, if you don't have access to 93oct then you can try running E85 to reduce timing corrections.

I would suggest you fix LPFP issue first though.

In the meantime run less aggressive map like Stage 2.

Thank you Saif! Sadly i only have acn91 since jm in Cali. Ill look into upgrading or replacing the lpfp, also bump down to Stage 2. Appreciate the help!

[Saif2018]

Originally Posted by Tzoo

Thank you Saif! Sadly i only have acn91 since jm in Cali. Ill look into upgrading or replacing the lpfp, also bump down to Stage 2. Appreciate the help!

No problem, check your logs on Stage 2 just to be on the safe side.

[lookalikehuuh]

Originally Posted by Tzoo

Running costco ACN91.
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So I have noticed that when I run Costco 91 I see tons of timing corrections that are not present when I run Shell or Chevron. It sucks that California doesn't sell real 91 or 93 but it is what it is I suppose.

[Tzoo]

Originally Posted by lookalikehuuh

So I have noticed that when I run Costco 91 I see tons of timing corrections that are not present when I run Shell or Chevron. It sucks that California doesn't sell real 91 or 93 but it is what it is I suppose.

Thanks for ur input. I just spoke with a friend, and he says he recommends shell 91 over costco as well and some tuners require Shell 91 before custom tuning