[nismoman]

I did a log last night after installing injen intake, ER catless DP, CSF Intercooler and BM3 stg2 93 oct. The car felt like it was running out of steam and the log shows timing being pulled like crazy especially in 4th with a knock event when i went full throttle and started the log. The car had about half a tank of 93 octane from a mobil station.
http://www.bootmod3.net/log?id=5ce4ae72c090c67dfdca5e7b

Tonight I filled up from half a tank of crap gas with shell 93 and dumped 1quart of VP octane booster in and holy crap! take a look at the difference. Both runs are on the same road and tonights run i ran through 4th into 5th. Also note the CSF intercooler keeping the IAT's down after driving for 30minutes to get to the road to do the logs.
http://www.bootmod3.net/log?id=5ce600eaae729b19d2c57917

[Nezil]

I don't believe the Shell 93 is any different from the Mobil. It's the VP octane booster that made the difference.

Quality octane booster is known to be good, but it turns the insides of your engine orange. Some say there are no long term side negative effects, others are concerned. I'm considering WMI instead as an octane booster.

[nismoman]

Not so much saying that shell is different than mobil station but that the shell station actually has quality 93 octane where as the other stations around me may or may not be mixing the gas or only have 2 tanks in the ground..., next test is to see if the car pulls nasty timing with shell 93 only.

[cecaa850]

Originally Posted by nismoman

Not so much saying that shell is different than mobil station but that the shell station actually has quality 93 octane where as the other stations around me may or may not be mixing the gas or only have 2 tanks in the ground..., next test is to see if the car pulls nasty timing with shell 93 only.

I'd be interested in this as well.

[PackPride85]

Have seen an increasing number of threads about the bm3 stage 2 93 map pulling timing. Maybe it's just too aggressive for ots map?

[ZM2]

Not to thread jack, but to add another data point, what do you guys think about these logs?

Stg 2 93 5.7 log with octane booster. Octane should be equivalent to US 98: http://www.bootmod3.net/log?id=5cbe507cae729b40cb5a8b25

I didn’t get to push as hard as usual in the log above, but the car felt better than when I logged 5.7 with just 93 octane: http://www.bootmod3.net/log?id=5cb90b36ae729b44f4273e3b

Do you guys see any differences, or just placebo?

[Cornally]

Originally Posted by PackPride85

Have seen an increasing number of threads about the bm3 stage 2 93 map pulling timing. Maybe it's just too aggressive for ots map?

Ayup, my log looks suspiciously similar (HPFP struggling to keep up ~5k rpms, knock detected in two spots). bm3 Stage 2 93 v5.7 map, Shell 93, Fabspeed Sportcat, CSF intercooler: http://www.bootmod3.net/log?id=5ce6892eae729b19d2c579d8

I rolled back to Stage 2 91 for now.

[Happy Motoring]

Originally Posted by Cornally

Ayup, my log looks suspiciously similar (HPFP struggling to keep up ~5k rpms, knock detected in two spots). bm3 Stage 2 93 v5.7 map, Shell 93, Fabspeed Sportcat, CSF intercooler: http://www.bootmod3.net/log?id=5ce6892eae729b19d2c579d8

I rolled back to Stage 2 91 for now.

Since octane rating is questionable in the US, why doesn't everyone run the 91 octane map to be safe? What is the performance difference?

[makeitbetter]

Originally Posted by Happy Motoring

Since octane rating is questionable in the US, why doesn't everyone run the 91 octane map to be safe? What is the performance difference?

What about us poor folk that are forced to run California 91? Maybe they should build an 89 Octane map

-Mark

[Anthony1s]

I bought a bottle of Lucas Octane Booster today with the purpose of taking a before/after log. However it started pouring rain out right before taking the first log, so I had to quit before adding booster. These two logs are with Turkey Hill 93 in Pennsylvania. v5.7 93 Oct Stage 2 AGG Tune with me going wayyy faster than I should in the rain.

I'm by no means and expert, but it looks like it's pulling timing and it wasn't even that hot out. 65F and rain should keep things real cool. Looks like it's gonna rain everyday until next Wednesday, so I can't do further testing until then.

DCT in Manual Mode
Sport+
MPE w/ valves open
Eventuri Intake
Wagner Evo 2 Comp
Stock Downpipe

http://www.bootmod3.net/log?id=5ce6df7ac090c61a0ab45556
http://www.bootmod3.net/log?id=5ce6e1ffc090c61a0ab45558

[Anthony1s]

Originally Posted by Cornally

Ayup, my log looks suspiciously similar (HPFP struggling to keep up ~5k rpms, knock detected in two spots). bm3 Stage 2 93 v5.7 map, Shell 93, Fabspeed Sportcat, CSF intercooler: http://www.bootmod3.net/log?id=5ce6892eae729b19d2c579d8

I rolled back to Stage 2 91 for now.

Odd, I'm on the Stg 2 93 AGG tune and my HPFP handles it fine. Logs posted above. I'm also on a stock downpipe.

[akkando]

Originally Posted by makeitbetter

What about us poor folk that are forced to run California 91? Maybe they should build an 89 Octane map

-Mark

There are ACN maps for stage 1 and 2.

[GerardzM]

Originally Posted by Anthony1s

I bought a bottle of Lucas Octane Booster today with the purpose of taking a before/after log. However it started pouring rain out right before taking the first log, so I had to quit before adding booster. These two logs are with Turkey Hill 93 in Pennsylvania. v5.7 93 Oct Stage 2 AGG Tune with me going wayyy faster than I should in the rain.

I'm by no means and expert, but it looks like it's pulling timing and it wasn't even that hot out. 65F and rain should keep things real cool. Looks like it's gonna rain everyday until next Wednesday, so I can't do further testing until then.

DCT in Manual Mode
Sport+
MPE w/ valves open
Eventuri Intake
Wagner Evo 2 Comp
Stock Downpipe

http://www.bootmod3.net/log?id=5ce6df7ac090c61a0ab45556
http://www.bootmod3.net/log?id=5ce6e1ffc090c61a0ab45558

Sport+.......did you experience any wheel slip?

With it raining outside, and traction still on, wheel slip can be mistaken for timing drops.

This is why we do pulls with traction full off, in a safe area of course...but always at the drivers discretion.

[Anthony1s]

Originally Posted by GerardzM

Sport+.......did you experience any wheel slip?

With it raining outside, and traction still on, wheel slip can be mistaken for timing drops.

This is why we do pulls with traction full off, in a safe area of course...but always at the drivers discretion.

I was thinking about that before I made the pull, so I did a test pull beforehand in 3rd gear at 3500rpm and the traction light didn't turn on, so I continued. I didn't see the traction light come on in my pulls either. But you raised a good point and I'll do future pulls with DSC off.

[GerardzM]

Originally Posted by Anthony1s

I was thinking about that before I made the pull, so I did a test pull beforehand in 3rd gear at 3500rpm and the traction light didn't turn on, so I continued. I didn't see the traction light come on in my pulls either. But you raised a good point and I'll do future pulls with DSC off.

Best to do so next time.

Even the slightest lift can cause timing to shoot up to the 30s+.

Just try and keep that foot planted.

Foot down at roughly 2500RPM......look for those repeated 3 degree timing drops above 4-4.5k RPM.

Could be bad plugs/ bad fuel/ tune too aggressive/ high AITs/ etc.