Race gas questions?!?!?

[EFI]

Ronnie, you do realize that there are benefits from running higher octane gas OTHER than power right?

Even if 100 octane gas made exactly 0hp more than stock, the benefit of increased knock resistance is a good thing to have when pushing the car hard in hot weather.

I'll go even a step further on the power idea since you seem to have forgotten...take 2 exact cars to a track where you run the HARD for a full 30 minutes in 95+ degree weather (something that most road racers would definitely encounter). Car 1 has 93 octane while Car 2 has 100+ octane.

As the laps add up, the temperature of the engine and air get hotter and hotter. Car 1 starts pulling timing due to excessive temperatures causing knock. Car 2 meanwhile is not pulling this timing because the higher octane is better able to resist knock from increased temps.

Now tell me again how in this scenario the higher octane is not going to benefit one car over the other in terms of power?

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[RonnieSVT]

Ronnie, you do realize that there are benefits from running higher octane gas OTHER than power right?

Even if 100 octane gas made exactly 0hp more than stock, the benefit of increased knock resistance is a good thing to have when pushing the car hard in hot weather.

I'll go even a step further on the power idea since you seem to have forgotten...take 2 exact cars to a track where you run the HARD for a full 30 minutes in 95+ degree weather (something that most road racers would definitely encounter). Car 1 has 93 octane while Car 2 has 100+ octane.

As the laps add up, the temperature of the engine and air get hotter and hotter. Car 1 starts pulling timing due to excessive temperatures causing knock. Car 2 meanwhile is not pulling this timing because the higher octane is better able to resist knock from increased temps.

Now tell me again how in this scenario the higher octane is not going to benefit one car over the other in terms of power?

sure but remember im just claiming that race gas in a stock gt350 is a waste of money and is not needed!

 

[ITLRUN]

sure but remember im just claiming that race gas in a stock gt350 is a waste of money and is not needed!

I'm certainly not claiming that its needed, but I am claiming that 100 octane fuel will make more power than 93 octane fuel in a 2016 Shelby GT350.

 

[EFI]

sure but remember im just claiming that race gas in a stock gt350 is a waste of money and is not needed!

What if that stock GT350 is tracked in triple digit weather every other weekend? Is it still a waste?

What your statement should say that "race gas in a DD/street driven GT350 is not needed". Which I'll agree with you 100%.

But regardless of the level of modficiation, if the car is being exposed to such incredibly harsh environments I can't see a reason why race gas is a waste when a few bux a gallon extra could mean extra protection. I'll gladly fork over that kinda of cash after dropping 70k on a car if I'm taking it racing.

 

[superman07]

The extra octane delivers a more enjoyable street driving experience. Torque, and especially at throttle tip in, are felt. It is just a different experience even when not at WOT. You can navigate traffic and do so more easily, with less RPM than with 91/93.

don't take my word for it, that's fine. I thought there was also a guy that posted quarter mile time slips that showed a quicker pull also.

 

[Jb350]

The extra octane delivers a more enjoyable street driving experience. Torque, and especially at throttle tip in, are felt. It is just a different experience even when not at WOT. You can navigate traffic and do so more easily, with less RPM than with 91/93.

don't take my word for it, that's fine. I thought there was also a guy that posted quarter mile time slips that showed a quicker pull also.

When you first started using race gas, did it take a few fill ups to adapt, or was it noticeable right away?

 

[krt22]

I worked at a shop with a dyno jet in the 90s
It was typical to go to a track and see older Vette guys running 100 octane n stock cars and not running any faster. I have never seen any stock car make more power with race gas but maybe the 5.2 is the exception.

I saw the 98 octane post and they claim a gain 30 ft pounds torque ! Lol

Its not the 90s anymore, cars ECUS are a shit ton more sophisticated now. Using 20 y/o tribal knowledge doesnt get you too far today, just way too much information out there for the eager and well informed enthusiast.

 

[RonnieSVT]

Its not the 90s anymore, cars ECUS are a shit ton more sophisticated now. Using 20 y/o tribal knowledge doesnt get you too far today, just way too much information out there for the eager and well informed enthusiast.

It may not be the 90s but explain the race gas test on a 2014 boss 302
its the same people who gained hp with the gt350


(We were surprised at this increase, because we tried this on a completely stock 2014 Boss 302S that we dynoed a year ago. It showed essentially no change in power with 91 versus 98 octane with its street gas tune, and also no more power running its 100 octane tune on race gas (both tunes provided with the car by Ford). That engine put down about 392 wheel Hp, which would be about 460 at the engine.

My 2012 street boss that I am planning to retire as a track car, put down about 368 wheel Hp on pump gas, and the regular key versus the track key made no difference.)

 

[zombiekiller]

I don't see how, unless the computer actually detects the gas and adds timing.

AFR stays within .1 on 93 or 100.

In fact, AFR bounces around far less on 100 than it does on 93.

Oddly enough, lund's tune does the exact same thing on 93 vs 100.

What's even more odd is that on 100 octane, with green cats i get not a single DTC.

On 93, I get a catalyst efficiency DTC.

It may be placebo effect, or the fact that it takes more rpms to go the same speed ( with less lower) on 93, but my transmission was running about 4-5 degrees cooler on 100 octane vs the last 2 tanks of 93 that i ran.

I'll keep running my 100 octane, you do whatever you want. I feel a tangible difference and am lucky enough to have realized i have a buddy who's family is in the oil business and cuts me a nice deal on my Drums.

For as much as I drive the car, I'm good with the $1.43 per gallon difference. If it was $10 a gallon ( like at a track) and ended up being 7.50ish more per gallon, I'd still run it on track days.

And for reference, I have run a corolla on Jet fuel for 6 months in okinawa. :-)

 

[RonnieSVT]

AFR stays within .1 on 93 or 100.

In fact, AFR bounces around far less on 100 than it does on 93.

Oddly enough, lund's tune does the exact same thing on 93 vs 100.

What's even more odd is that on 100 octane, with green cats i get not a single DTC.

On 93, I get a catalyst efficiency DTC.

It may be placebo effect, or the fact that it takes more rpms to go the same speed ( with less lower) on 93, but my transmission was running about 4-5 degrees cooler on 100 octane vs the last 2 tanks of 93 that i ran.

I'll keep running my 100 octane, you do whatever you want. I feel a tangible difference and am lucky enough to have realized i have a buddy who's family is in the oil business and cuts me a nice deal on my Drums.

For as much as I drive the car, I'm good with the $1.43 per gallon difference. If it was $10 a gallon ( like at a track) and ended up being 7.50ish more per gallon, I'd still run it on track days.

And for reference, I have run a corolla on Jet fuel for 6 months in okinawa. :-)

Are you serious ? Do you really think that you can run faster with less rpm with a octane change? You realize that even if your gt350 made 1000 hp at any rpm in any gear on both cars are going to be going the same speed no matter what hp, it may get to 150 quicker but that speed at rpm wont change. You also state that your transmission runs cooler with 100 octane

 

[zombiekiller]

Are you serious ? Do you really think that you can run faster with less rpm with a octane change? You realize that even if your gt350 made 1000 hp at any rpm in any gear on both cars are going to be going the same speed no matter what hp, it may get to 150 quicker but that speed at rpm wont change. You also state that your transmission runs cooler with 100 octane

so i'm guessing you completely whizzed by the , " may be placebo effect".

reading comprehension > you. ;)

 

[Voodooo]

it says max power with 93 or better !

Are you being ignorant or just plan like to argue? When I dynoed my car on 93 octane I pulled 511rwhp. With Sunoco 260gt 100 octane I pulled 529rwhp. I still believe more is to be had in my car. Time will tell. I can't understand why it's so hard for you to realize that race fuel / E85 provides more power to the gt350. It's pretty simple logic.

 

[Voodooo]

Ronnie, you do realize that there are benefits from running higher octane gas OTHER than power right?

Even if 100 octane gas made exactly 0hp more than stock, the benefit of increased knock resistance is a good thing to have when pushing the car hard in hot weather.

I'll go even a step further on the power idea since you seem to have forgotten...take 2 exact cars to a track where you run the HARD for a full 30 minutes in 95+ degree weather (something that most road racers would definitely encounter). Car 1 has 93 octane while Car 2 has 100+ octane.

As the laps add up, the temperature of the engine and air get hotter and hotter. Car 1 starts pulling timing due to excessive temperatures causing knock. Car 2 meanwhile is not pulling this timing because the higher octane is better able to resist knock from increased temps.

Now tell me again how in this scenario the higher octane is not going to benefit one car over the other in terms of power?

I'll tell you why Ronnie doesn't seem to understand this.
1) he said 1990s. He was still stuck in the carburetor age. OBD1 was just a few years old then and he was used to tuning a carb and distributor.

2) he was slam dancing at a pearl jam (one of my favorite groups) concert and hit his head.

3) he just got news milli vanilli got busted lip sinking on live tv.

 

[Voodooo]

sure but remember im just claiming that race gas in a stock gt350 is a waste of money and is not needed!

Of course it's not needed by everyone. Just like everyone doesn't need a gt350. But I'm glad I have one and I like to feed it the best. Would you rather drink Zima or Heineken?
Keystone (Keith stone) or Bud light?
Spoiled milk or cottage cheese?
See where I'm going here.

 

[RonnieSVT]

I'll tell you why Ronnie doesn't seem to understand this.
1) he said 1990s. He was still stuck in the carburetor age. OBD1 was just a few years old then and he was used to tuning a carb and distributor.

2) he was slam dancing at a pearl jam (one of my favorite groups) concert and hit his head.

3) he just got news milli vanilli got busted lip sinking on live tv.

1)nope I owned a procharged lt4 Camaro that had DFI and made 642RWHP

2) It was a Alice in Chains concert, ‎Layne Stayley was stage diving and kicked me in the head! Love Soundgarden, Pearl Jam, Alice in Chains!

3) I learned that while attending Musicians institute (BIT) early 90s
im a bass player

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