JB4tech.com - International Turbo Tuning Discussion
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Default Jb4 map 2 logs 1/4 mile - 12-28-2021, 08:50 PM

Can someone look at my log please, im new to jb4
And this is only octane 92 thanks
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File Type: csv P21_M2_R1_211225-map2 quarter mile 115 bias.csv (14.3 KB, 75 views)
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Default 12-29-2021, 08:30 AM

You're running rich, why are you at 115 in your app for AFR? Do you have fuel wires?
What other supporting mods do you have?
--------------------
Overall the log looks normal, timing is fine aside from expected corrections.
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Default 12-29-2021, 08:41 AM

Yes i do have fuel wires, was just test different afr, i thought thats the jb4 afr, i can turn off the manual afr input.

What the leaner number ?
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Default 12-29-2021, 08:43 AM

And just hks plugs 0.022 gap thats all mods for now
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Default 12-29-2021, 08:56 AM

Let the fuel wires do their job, you can put 0's in those fields and the JB will lean out your AFR to around 11.9:1 (119) under full load. Lower numbers are richer, you forced 11.5:1 (115).
You typically don't need to mess with those until you graduate past Map7 (meth) and go to Map6 custom.

Darrin S.

2019 AWD GT2, Sxth, JB4, Meth, MBRP, HFC's, Agency intakes, Agency FMIC, HKS Plugs 11.01 @ 124 mph
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Default 12-29-2021, 09:00 AM

Okay cool thanks man, i am still learning about jb4.
So im running 92 octane, u think my log is good for map 2?
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Cannon @ BMS Cannon @ BMS is offline
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Default 12-29-2021, 11:38 AM

Quote:
Originally Posted by Crazy-Stinger
Okay cool thanks man, i am still learning about jb4.
So im running 92 octane, u think my log is good for map 2?
You start getting quite a few timing corrections in 4th gear. Was this log recorded possibly on a bumpy surface?


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Default 12-29-2021, 01:03 PM

No its on pretty flat highway
I already reset ecu to relearn
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Default 12-29-2021, 06:08 PM

It's the 92 octane....

Something people really, really need to understand about performance vehicles and pump gas.

Pump gas is a convenience so you can drive your car, not a performance fuel to squeeze more performance out of it.

That is what leads you to buying endless amounts of replacement parts like intercoolers and such.

Gasoline is made for the majority not the minority which is you.

Trying to squeeze performance out of it is fruitless and mind numbing. It makes the aftermarket lots of money because -

1) Race Gas is expensive
2) Water Methanol is complicated (it isn't but there you are)
3) If I put something else other than gasoline in the tank I'll break something.

Alternative fuels like E85 and Methanol have tons more oxygen per pound than gasoline will ever have. Despite the lower BTU of those fuels, they burn cooler because of it and that is why you get twice as much ignition advance.

Lots of people thinking is based on 1970's technology it's not updated for the present reality.

Even on Map 1 on a better fuel, the car will make more power. It just gets faster with each Map.

Mainly because knock is eliminated, the engine runs cooler and thus more efficiently.

That is why I don't read the majority of pump gas related logs, it's pointless. Your performance issue is the fuel you run.

If all you want to run is pump gas, log Map 2 and leave it.

Then your best option is actually nitrous. Because you can add oxygen without increasing ignition timing and still make power. More power than any exhaust you can buy and more power than any other part you can buy.

That is the most power you will make on pump gas period, end of story.

WMI + JB4 + Nitrous = Space Shuttle
WMI + JB4 + Ethanol/ Sunoco GT-260+ Nitrous = Saturn V

Good fuel is worth at least two tenths (2/3 mph) over the best pump gas you can buy and there is more power available in fuels alone.


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Default 12-29-2021, 06:14 PM

Thanks man thats alot
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