JB4 Map 3 with Octane booster

[underdonk]

Makes sense! I'm still running stock DP with Tomei Titanium Exhaust, and HKS Carbon Intake

Nice! Someone with more experience than me tuning a car with an aftermarket downpipe will have to chime in, but I will say, an aftermarket downpipe running a stock tune/ECU/no piggy back made a big difference for me. Again, based on the butt dyno. Highly recommend it if you're looking for some cheap and easy power.

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[Evolution]

An alternative to octane booster is E85. Put 2 gallons in at fill up and it will help. Made a huge difference in my car in this 100° weather. Jesse did a tune for me in the winter on our horrible 91 and it wasnt happy when the heat came in. Now its great again.

 

[B58_ hwAyaq]

Nice! Someone with more experience than me tuning a car with an aftermarket downpipe will have to chime in, but I will say, an aftermarket downpipe running a stock tune/ECU/no piggy back made a big difference for me. Again, based on the butt dyno. Highly recommend it if you're looking for some cheap and easy power.

FYI @mdbr0tha

Downpipe only gains were minor but sound and minor bump in power was noticeable. https://www.supramkv.com/threads/cg...npipe-only-log-review-dragy.13284/post-197795

A tune/JB4 with the downpipe is where you’ll really notice things AND make material gains in performance.

 

[Extreme Power House]

Gotcha! Why so? If you get something reputable like boostane? will it not be the same octane increase if you use it with the same 93 gas you've been using?

What do you think would be another option to get 93+. Only thing I can think of is race gas, but that might be a bit much going over 100 Octane.

From the dialogs I have seen, the octane it's adding is not consistent, which becomes a problem when you are pushing more aggressive maps. It's just not worth the risk, in my opinion.

If you have access to E85, it's a better option. If that's not an option and you want more power, invest in a methanol injection system or a bigger turbo

 

[underdonk]

FYI @mdbr0tha

Downpipe only gains were minor but sound and minor bump in power was noticeable. https://www.supramkv.com/threads/cg...npipe-only-log-review-dragy.13284/post-197795

A tune/JB4 with the downpipe is where you’ll really notice things AND make material gains in performance.

My butt dyno must need recalibration! ?

 

[Deleted User 191538]

From the dialogs I have seen, the octane it's adding is not consistent, which becomes a problem when you are pushing more aggressive maps. It's just not worth the risk, in my opinion.

If you have access to E85, it's a better option. If that's not an option and you want more power, invest in a methanol injection system or a bigger turbo

Ah, great point. There's E85 everywhere around here, lol..I'm just straddling the line of keeping it as stock as possible. I know...The term "as stock as possible" doesn't apply lol. Or shouldn't apply as I should say...

 

[Deleted User 191538]

FYI @mdbr0tha

Downpipe only gains were minor but sound and minor bump in power was noticeable. https://www.supramkv.com/threads/cg...npipe-only-log-review-dragy.13284/post-197795

A tune/JB4 with the downpipe is where you’ll really notice things AND make material gains in performance.

Great find. Yeah minimal gains...But in this world minimal is maximum lol...

I may look into the AA catted downpipe...Just cringing to fork up 1400 for a dp with the "minimal" gain hahahahahahahaha

 

[underdonk]

From the dialogs I have seen, the octane it's adding is not consistent, which becomes a problem when you are pushing more aggressive maps. It's just not worth the risk, in my opinion.

If you have access to E85, it's a better option. If that's not an option and you want more power, invest in a methanol injection system or a bigger turbo

I can't comment on E85/35/50/etc. in this car, though there's plenty of evidence out there, but I will say that I've had positive results from properly measured Boostane Professional additive to fuel in other performance cars. I have two cans sitting in the garage I've been considering properly mixing into the Supra to get a bit of additional octane to see how the car handles it.

 

[underdonk]

Great find. Yeah minimal gains...But in this world minimal is maximum lol...

I may look into the AA catted downpipe...Just cringing to fork up 1400 for a dp with the "minimal" gain hahahahahahahaha

I can vouch for the product (it's a quality piece of kit), and while you have one person's opinion, the change to me felt more than just minimal. But I have zero data to back that up, so take it for what you will.

 

[AHP]

In my experience Boostane works very well when mixed at the higher ratios. I did a lot of experimenting with it on my C6 ZR1 as an alternative to race fuel, and didn't have the injector capacity for E. The gains are very real if you can tune for it and/or are already knock-limited. Real world example -- I went from 10.4 @ 134 to 10.1 @ 138 the only changes being a more aggressive tune. An honest +4MPH in the 1/8 and on the big end with 0 KR logged throughout the entire run made a believer out of me. And for context, the straight 93 tune was riding the edge, so the delta would have been even greater with a more conservative baseline. However, at those high ratios the MMT will completely coat the spark plugs in dark orange tint, and likely the exhaust valves, cats if equipped, etc... As such I would only recommend it for occasional use and not every day.

As others have mentioned, a few gal of E will do wonders with zero consequence and is much more economical.

 

[Deleted User 191538]

In my experience Boostane works very well when mixed at the higher ratios. I did a lot of experimenting with it on my C6 ZR1 as an alternative to race fuel, and didn't have the injector capacity for E. The gains are very real if you can tune for it and/or are already knock-limited. Real world example -- I went from 10.4 @ 134 to 10.1 @ 138 the only changes being a more aggressive tune. An honest +4MPH in the 1/8 and on the big end with 0 KR logged throughout the entire run made a believer out of me. And for context, the straight 93 tune was riding the edge, so the delta would have been even greater with a more conservative baseline. However, at those high ratios the MMT will completely coat the spark plugs in dark orange tint, and likely the exhaust valves, cats if equipped, etc... As such I would only recommend it for occasional use and not every day.

As others have mentioned, a few gal of E will do wonders with zero consequence and is much more economical.

Great info. Did you try this on the supra? Great information, but I'm not sure how to make that comparison with a totally different car.

 

[GoldenEye]

I seriously went thru this same exact situation when I got my car! Map3 is choppy as hell bro, I did the JB4, cold air and down pipe then hopped on 1fastsupra.com and purchased @Jesse DaBears custom tune. The very first revision he sent me made it smooth as hell! Go that direction, you won’t be disappointed…

So I've heard that adding octane booster to 93 octane will allow you to run map 3 on the JB4.

My question is how do you gauge the right amount of octane booster to add. I am going to use boostane, as I heard it's one of the best boosters out there.

Can you just add the whole can of octane booster to 93 and be fine?

 

[Awales74]

I've had good experience with LucasOil. Bottle is worth 2 octane and was fairly consistently for me. Enough to bump up 1 grade of fuel. Price wise it's terrible alternative. But having a bottle in the trunk when you get caught out in west Texas is nice.

 

[AHP]

Great info. Did you try this on the supra? Great information, but I'm not sure how to make that comparison with a totally different car.

No, I've run an E blend in the Supra.

The point of the comparison is that irrespective of the car, it works as advertised -- a race fuel substitute. A 4MPH gain is roughly 50-60WHP on the conservative end it happily facilitates the extra cylinder pressure with zero knock. That is equivalent to same results I've seen with 110 octane race fuel.


Also, I would HIGHLY suggest a downpipe (catted or not doesn't matter) before going further and/or trying to raise the boost more. The JB4 OTS maps on the stock downpipe are a terrible combination.

 

[Sub-MkV]

I've noticed that additive boost is always inconsistent and you'd be better off on map 1. I have another piggyback(TurboTransformer) which ranges from 0.2-4 psi of boost settings. If I set it to 3 psi I'll see around 23-24 psi, If I set it at 2 psi I'll see 21-22.5 psi and if I set it to 1.6 psi I'll see 20.5-21.6 psi so I keep it at 1.6 psi plus I use 3 gallons of E85 mix with 93. I have the best catless dp(Armytrix) and a high flow filter.

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