Just used Boostane - felt a nice difference in stock GT350R

[NHMustangGuy]

Hey Everyone, I mixed 16 OZ with 93 - in theory that should give me 100 Octane. it literally chirps the tires in 1st and 2nd now. Nice improvement in under WOT and overall responsiveness.

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[Postal Bob]

Don't know what's in Boostane, but the manual gives a warning about using octane boosters:

Fuels containing the octane booster additive, methylcyclopentadienyl manganese tricarbonyl (MMT). • Leaded fuel, using leaded fuel is prohibited by law.

 

[NHMustangGuy]

That's correct, there is a specific call out to an ingredient, Boostane has that covered so I felt comfortable using it.

 

[Red65]

Higher octane fuel physically make's less power/per amount of fuel (I say per amount of fuel because it doesn't change the gasoline molecule specifically) than lower octane due to how octane affects flame front for detonation resistance. If you're feeling a power increase from increasing octane, you may want to look into where you fill up. There's a chance you've been getting some bad fuel and your knock sensor is pulling timing normally under WOT. Adding the octane booster is probably helping that in that case.

This is just a guess but gaining HP from adding octane booster whenever the engine was running 100% properly prior to the octane booster has been busted many times over.

 

[Cav427]

Chirps the tires? Mine spins 'em going from 1st to 2nd, 2nd to 3rd and chirps going into 4th... Only 91 Octane. Do you have an auto? Wouldn't think it would Without dyno runs or track times with consistent runs you really can't determine if there are any real HP or Torque gains.

 

[matthewr87]

Chirps the tires? Mine spins 'em going from 1st to 2nd, 2nd to 3rd and chirps going into 4th... Only 91 Octane. Do you have an auto? Wouldn't think it would Without dyno runs or track times with consistent runs you really can't determine if there are any real HP or Torque gains.

Sir, this is the GT350 forum. We do not have any low RPM torque and our engines explode on a daily basis. We do not spin anything in 1st, 2nd, 3rd, 4th, 5th, or 6th except our FPC, which then explodes.

 

[NHMustangGuy]

Hi, it's a GT350 so it has a stick and it's not a TQ monster at all, it's NA and all I'm saying is I feel a difference. I don't know why or how, but I know my BUTT Dyno say's it pulls harder between 6 and 7500 RPM. lots of fun....

 

[luc]

Hey Everyone, I mixed 16 OZ with 93 - in theory that should give me 100 Octane. it literally chirps the tires in 1st and 2nd now. Nice improvement in under WOT and overall responsiveness.

Hi, it's a GT350 so it has a stick and it's not a TQ monster at all, it's NA and all I'm saying is I feel a difference. I don't know why or how, but I know my BUTT Dyno say's it pulls harder between 6 and 7500 RPM. lots of fun....

Your butt dyno need to be recalibrated
Classic placebo effect …..

 

[gimmie11s]

Your butt dyno need to be recalibrated
Classic placebo effect …..

Not if he was using bad fuel causing the knock sensors to pull timing.

Could very well run harder with the Boostane.

 

[Angrey]

You're murdering your cats and possibly accelerating the life of your 02 sensors.

Boostane contains MMT, which is no bueno for catalytic converters (or 02 sensors).

 

[Cory S]

You're murdering your cats and possibly accelerating the life of your 02 sensors.

Boostane contains MMT, which is no bueno for catalytic converters (or 02 sensors).

I’ve used MMT for over 25 years on many applications with 02 sensors and converters with zero harm. Many have. Other than the Orange residue, it’s virtually harmless to O2 and cats. Now leaded fuels is what you don’t want to run a lot in non diluted amounts…….

Boostane works and is pretty much proven to cause zero failures to O2’s and catalytic converters.

 

[EFI]

This is just a guess but gaining HP from adding octane booster whenever the engine was running 100% properly prior to the octane booster has been busted many times over.

Maybe in the olden days with basic ECUs, but the Coyote ECU is pretty sophisticated and can definitely provide a benefit on its own with higher octane gas.

The main spark adjustment table has a +10*/-10* swing over the base tables. During normal operation, there's only a few degrees added here. By using a higher octane fuel that spark adjustment can be anywhere from 5-10* higher than on 93, so it's definitely not just a placebo effect.

Also higher octane fuel provides more benefit in hotter weather when 93 octane struggles to run max timing due to higher CHT and IATs. So in the summer its definitely believable that the OP noticed a power bump.

 

[K4fxd]

All coyote's are octane limited due to compression. VooDoo's are coyotes.

Without the electronics you need 100 octane to run 11 to 1. 12 needs 104 min.

So yes you should get real improvements in power with proper octane fuel in these engines.

 

[Red65]

Maybe in the olden days with basic ECUs, but the Coyote ECU is pretty sophisticated and can definitely provide a benefit on its own with higher octane gas.

The main spark adjustment table has a +10*/-10* swing over the base tables. During normal operation, there's only a few degrees added here. By using a higher octane fuel that spark adjustment can be anywhere from 5-10* higher than on 93, so it's definitely not just a placebo effect.

Also higher octane fuel provides more benefit in hotter weather when 93 octane struggles to run max timing due to higher CHT and IATs. So in the summer its definitely believable that the OP noticed a power bump.

So you’re suggesting that stock Gt350’s run naturally with the knock sensors constantly regarding timing on the factory calibration?

My understanding is the calibration has a target total timing with the ability to advance under ideal conditions (no detonation knock, low CHT’s/IAT’s etc) or retard under bad conditions (Vice versa). But if the engine is already not knocking on 93 and it’s target timing is 30* with a +6* (for example), there’s no way for it to add more timing just from adding higher octane fuel. From what I’ve seen, there is no total timing difference between 93 and higher octane fuel on the factory calibration

please correct me if I’m wrong

 

[Cory S]

So you’re suggesting that stock Gt350’s run naturally with the knock sensors constantly regarding timing on the factory calibration?

My understanding is the calibration has a target total timing with the ability to advance under ideal conditions (no detonation knock, low CHT’s/IAT’s etc) or retard under bad conditions (Vice versa). But if the engine is already not knocking on 93 and it’s target timing is 30* with a +6* (for example), there’s no way for it to add more timing just from adding higher octane fuel. From what I’ve seen, there is no total timing difference between 93 and higher octane fuel on the factory calibration

please correct me if I’m wrong

Normally that would be true 10 years ago, but 93 isn’t the same as it used to be very often. Even on 93, the PCM is making timing adjustments and sampling @ 60-80hz. Adaptive learning will absolutely give a higher spark advance average with 2-3 octane numbers over 93 or so.

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