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How much boost are you using?
- Thread starter xot1
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Eric Arroyo
Member
I don't have a tune yet, but from what I've been reading, it's recommended not to go over 20 pounds. I don't know if that's due to a loss of turbo efficiency or concern about blowing up your turbos.
I know Tork tuned Tonkabob's Stinger to just over 20, but that's an ECU tune and IIRC, they were monitoring/changing more values than you can with a piggyback. Below is a snapshot of how the JB4 adds boost from this post. Keep in mind, the stock boost is between 12 and 14 pounds. So you're looking at a range of 12 to 19 pounds depending on the tune depending on your octane level and whether or not you're using WMI. I suppose, at the end of the day, if you're logs look good for extended use with a certain boost level, you could slowly creep it up to a fail point, then back off to a safer area. But I really don't recommend that unless you're completely confident in your ability to tune your own car.
Map 0: JB4 disabled
Map 1: 4psi over stock peak tapering to 2.5psi at high RPM. Default performance map suitable for all 91+ octane fuels.
Map 2: 5psi over stock tapering to 4psi at high RPM. Suggested for 93+ octane fuel.
Map 3: 6psi stock tapering to 5psi at high RPM. Suggested for high quality fuel including unleaded race gas, ethanol mixtures up to 30%, or high quality octane booster like Torco or Boostane.
Map 4: Valet map, runs around half as much boost as stock.
Map 5: Up to 7psi over stock. For use with unleaded race fuel and/or E85 mixtures up to 30%.
Map 6: User adjustable map. Enter value of boost over stock by RPM on user adjustment page.
Map 7: Up to 7psi over stock but without top end taper. For unleaded race fuel use and bolt on modifications. May not be suitable for E85 mixtures due to high fuel pressure dropping. If using this map on E85 you should be experienced at reading your own logs and evaluating ignition advance and fuel pressure.
Map 8: Progressive WMI (water/meth) map. Increases boost as a function of methanol flow & methanol boost additive. Holds boost low until WMI is flowing to avoid tip-in knock, and reduces boost as a function of WMI flow in the event of interruption like running out of fluid, leak, or component failure.
I know Tork tuned Tonkabob's Stinger to just over 20, but that's an ECU tune and IIRC, they were monitoring/changing more values than you can with a piggyback. Below is a snapshot of how the JB4 adds boost from this post. Keep in mind, the stock boost is between 12 and 14 pounds. So you're looking at a range of 12 to 19 pounds depending on the tune depending on your octane level and whether or not you're using WMI. I suppose, at the end of the day, if you're logs look good for extended use with a certain boost level, you could slowly creep it up to a fail point, then back off to a safer area. But I really don't recommend that unless you're completely confident in your ability to tune your own car.
Map 0: JB4 disabled
Map 1: 4psi over stock peak tapering to 2.5psi at high RPM. Default performance map suitable for all 91+ octane fuels.
Map 2: 5psi over stock tapering to 4psi at high RPM. Suggested for 93+ octane fuel.
Map 3: 6psi stock tapering to 5psi at high RPM. Suggested for high quality fuel including unleaded race gas, ethanol mixtures up to 30%, or high quality octane booster like Torco or Boostane.
Map 4: Valet map, runs around half as much boost as stock.
Map 5: Up to 7psi over stock. For use with unleaded race fuel and/or E85 mixtures up to 30%.
Map 6: User adjustable map. Enter value of boost over stock by RPM on user adjustment page.
Map 7: Up to 7psi over stock but without top end taper. For unleaded race fuel use and bolt on modifications. May not be suitable for E85 mixtures due to high fuel pressure dropping. If using this map on E85 you should be experienced at reading your own logs and evaluating ignition advance and fuel pressure.
Map 8: Progressive WMI (water/meth) map. Increases boost as a function of methanol flow & methanol boost additive. Holds boost low until WMI is flowing to avoid tip-in knock, and reduces boost as a function of WMI flow in the event of interruption like running out of fluid, leak, or component failure.
Revvdmedia
1000 Posts Club!
I recall Terry (BMS) noting that gains were lessening with boost beyond that which the JB4 puts out. I'm confident an ECU tune can do "a little more" but I would think the turbos are reaching maximum capability around 20+ LBS.
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Revvdmedia
1000 Posts Club!
When 20psi isn't enough, you can step up to this.
From interior to exterior to high performance - everything you need for your Stinger awaits you...
DiabloStinger
1000 Posts Club!
Hitting 17-18 consistently on LAP protuner... I agree that is the sweet spot.
BertBert2019GT
Stinger Enthusiast
‘member vacuum line boost controllers?
G
G-211856
I hit 22psi, 3rd gear pull today
