Canadian Stingers with JB4 - What fuel?

[Revvdmedia]

I hear you.

The logs will be useful too so you can look at timing advance in cyl 1-6 under the same conditions for both fuels. If the performance is similar but one fuel has better timing.. It's a good indication to stick with that fuel.

Yes I have looked at timing and you have seen a few of my logs. I always felt overall timing could be a little higher by about 4 or 5 degrees usually but timing drops happened on all 6 cylinders equally, you noted that pulling timing due to knock usually happens on particular cylinders, not consistently on all 6, so I've been thinking it may or may not be octane, hard to say.

 

[Revvdmedia]

What do your guy's logs say for 0-60 time on the JB4, and what map?

 

[JDM_Man]

Is there much risk turning up to a higher map? The car and knock sensors will "always" pull it back to a safe margin, meaning nothing should blow up if just testing more boost? I grew up with old school turbo Dodges and boost was a dangerous game. I understand new cars with knock sensors should be safer. Basically I should just be "slower" or no faster on a higher map if having issues running a higher map?

Did you ever try Petro 94 with Map 3??

 

[Revvdmedia]

Did you ever try Petro 94 with Map 3??

No. While I'm sure the car would do all the work to make sure the engine doesn't blow up, I wasn't that brave. I'm concerned it's not running 100% strong considering my 1/4 mile and 0-60 are around stock AWD times when running Map 2...

 

[JDM_Man]

No. While I'm sure the car would do all the work to make sure the engine doesn't blow up, I wasn't that brave. I'm concerned it's not running 100% strong considering my 1/4 mile and 0-60 are around stock AWD times when running Map 2...

Intake/Exhaust with a fat driver (300+) I got a 13.27 1/4 and a 4.87 0-60.

 

[Revvdmedia]

Intake/Exhaust with a fat driver (300+) I got a 13.27 1/4 and a 4.87 0-60.

Tune or stock? And what altitude where you ran? My best was Map 2 (no fuel wires) on Petro 94 at Castrol, 2200ft alt/2995 DA with ambient considered. IAT was 113F average over the run, launch control used. 13.19s @ 107. With a DIY intake, stock exhaust and everything else except Densos.

On a side note, either JB4 0-60 is way too slow, or my car hauls ass on the top end and is really suffering off the line. 5.125s on that particular run above, but that 1/4 mile time and trap normally nets about 4.6-4.7s 0-60 through the magazine tests. A dragy could validate, but I have yet to get one.

 

[Terry@BMS]

Yes I have looked at timing and you have seen a few of my logs. I always felt overall timing could be a little higher by about 4 or 5 degrees usually but timing drops happened on all 6 cylinders equally, you noted that pulling timing due to knock usually happens on particular cylinders, not consistently on all 6, so I've been thinking it may or may not be octane, hard to say.

All 6 cylinders dropping are mapped changed. 1 or 2 (or more) cylinders dropping at different intervals are knock corrections. A few are OK. All cylinders rolling down like a staircase indicate major corrections and that you need to drop down boost and/or raise octane as the ECU is unable to find an optimal timing profile for the conditions.

 

[Revvdmedia]

All 6 cylinders dropping are mapped changed. 1 or 2 (or more) cylinders dropping at different intervals are knock corrections. A few are OK. All cylinders rolling down like a staircase indicate major corrections and that you need to drop down boost and/or raise octane as the ECU is unable to find an optimal timing profile for the conditions.

Are these "mapped timing drop" consistent with particular history of rpm and knock at the time? Meaning if the car saw knock at 4500 rpm and dropped timing, it would learn in a ignition retard at 4500 rpm moving forward until learned out? And do you know how long until the system unlearns this based on not seeing knock for a while?

I typically see mapped knock on all cylinders, but I have come across a few dynamic ignition drops in a single cylinder on just a run or two.

 

[JDM_Man]

Tune or stock? And what altitude where you ran? My best was Map 2 (no fuel wires) on Petro 94 at Castrol, 2200ft alt/2995 DA with ambient considered. IAT was 113F average over the run, launch control used. 13.19s @ 107. With a DIY intake, stock exhaust and everything else except Densos.

On a side note, either JB4 0-60 is way too slow, or my car hauls ass on the top end and is really suffering off the line. 5.125s on that particular run above, but that 1/4 mile time and trap normally nets about 4.6-4.7s 0-60 through the magazine tests. A dragy could validate, but I have yet to get one.

Injen intakes and ark exhaust.

300 feet above sea level and around 28C

 

[Revvdmedia]

Injen intakes and ark exhaust.

300 feet above sea level and around 28C

Hm well I am almost .1 faster on the track timer at almost 2000ft higher...assuming about 0.1s lost per 1000ft of altitude (a guess) nets me 0.3s faster and I'm 150lbs lighter lol but no exhaust, so maybe I'm not too far off the mark.

 

[JDM_Man]

Hm well I am almost .1 faster on the track timer at almost 2000ft higher...assuming about 0.1s lost per 1000ft of altitude (a guess) nets me 0.3s faster and I'm 150lbs lighter lol but no exhaust, so maybe I'm not too far off the mark.

My buddy with stinger GT (not limited) which is 100 lbs lighter, and he weighs 160 is completely stock and did a 4.92 and 13.5 on pump 91

 

[Revvdmedia]

My buddy with stinger GT (not limited) which is 100 lbs lighter, and he weighs 160 is completely stock and did a 4.92 and 13.5 on pump 91

Well that makes me feel a bit better. I never doubted the car being faster with JB4 nor did I ever think the JB4 was doing anything wrong. Just based on others numbers and some assumptions I did expect a 12.9. I'm sure I'll be there with fuel wires and/or a great run.

 

[Terry@BMS]

Yes I have looked at timing and you have seen a few of my logs. I always felt overall timing could be a little higher by about 4 or 5 degrees usually but timing drops happened on all 6 cylinders equally, you noted that pulling timing due to knock usually happens on particular cylinders, not consistently on all 6, so I've been thinking it may or may not be octane, hard to say.

There is a long term octane adaption yes but is global across all cylinders.

 

[JDM_Man]

Well that makes me feel a bit better. I never doubted the car being faster with JB4 nor did I ever think the JB4 was doing anything wrong. Just based on others numbers and some assumptions I did expect a 12.9. I'm sure I'll be there with fuel wires and/or a great run.

Every car is different, I don't think your runs were terrible. You can always download the Dragy app and see other cars times with out having to buy one. You'll see your time is around what it should be, give or take

 

[Shablo]

i just installed the JB4 with fuel wires and Bluetooth connect. Also installed the Denso plugs. Whats the best way to log? Any specific style of driving? Also logs to be done in comfort or sport mode?

 

[JDM_Man]

i just installed the JB4 with fuel wires and Bluetooth connect. Also installed the Denso plugs. Whats the best way to log? Any specific style of driving? Also logs to be done in comfort or sport mode?

What gas are you testing with?

 

[Shablo]

What gas are you testing with?

Currently have Shell 91 but i wanna test with Petro 94 too, since that's what i usually pump. But after reading this thread about Canadian 94 being shitty debating what to use regularly.

 

[JDM_Man]

Currently have Shell 91 but i wanna test with Petro 94 too, since that's what i usually pump. But after reading this thread about Canadian 94 being shitty debating what to use regularly.

Thats why we need to compare logs. If shell 91 turns out being the best I would be curious if Costco 91 is on par or maybe better since it has no ethanol. Although Petro Canada's 94 is a E10 mix so I don't even see that being that bad, most people want to run a E30 mix for map 3

 

[Adamdan]

I’ve been having good luck with chevron 94 and a e20 mix. Logs look good on map 3 too but I mostly stick to map 2.

 

[Shablo]

See logs for map 1 and map 2 on shell 91.