Emira JB4 Tuning Now Available for I4 & V6 Cars!

[sixtyy]

40whp for map 1 plus 91. Huge gain.

Why did the green hit the rev limiter earlier than other runs?

 

[Tomwa]

all i know is it smell great and feels amazing, also how are you getting your hands on toluene?

Common paint stripper you can find at hardware stores. Couldn't speak to its quality for such purposes though >_>

 

[NorCalEmira]

Sharing the dyno for science:

red = stock
green = map1 + 91
lightbue = map1 + "93"
grey = map2 + "93"

View attachment 69005

Nice gains! I also live in the Bay Area and would like to schedule a dyno session now that I have installed the JB4. Could you share where you had this done?

 

[kitkat]

40whp for map 1 plus 91. Huge gain.

Why did the green hit the rev limiter earlier than other runs?

+57whp in map 1

 

[Eagle7]

Sharing the dyno for science:

red = stock
green = map1 + 91
lightbue = map1 + "93"
grey = map2 + "93"

View attachment 69005

It's interesting that your charts are almost the opposite of mine. All the gains on mine tend to be below 4k rpm, while all yours really start to show above 4k. Do you have the 3rd cat delete?

 

[NJemira85]

Was this a V6 or an i4? I didn't see any big gains on my V6. Map 1 is pretty subtle like you say, although there is a nice lift in torque at the lower rpms.

View attachment 68759

Am I reading this correctly that you picked up less than 20ftlbs peak tq?

 

[Brokenblinker]

Am I reading this correctly that you picked up less than 20ftlbs peak tq?

We don't really know for sure because the dynos are taken on different days months apart with different ambient conditions. This is not meant to be a knock, I'm very thankful that he went ahead and got dynos. I'm just saying you can't compare them to each other

 

[NJemira85]

We don't really know for sure because the dynos are taken on different days months apart with different ambient conditions. This is not meant to be a knock, I'm very thankful that he went ahead and got dynos. I'm just saying you can't compare them to each other

Didn’t he record before and after plots? Or were they on different days?

 

[Brokenblinker]

Didn’t he record before and after plots? Or were they on different days?

His before and after are from different days with different conditions

 

[NJemira85]

His before and after are from different days with different conditions

Got it. Thanks.

 

[luciddaydream]

Does anybody know if there are any more ways to get some extra juice out of the car? Will the JB4 continue to improve? Will they make updates on it ? Thanks

 

[NJemira85]

Does anybody know if there are any more ways to get some extra juice out of the car? Will the JB4 continue to improve? Will they make updates on it ? Thanks

Headers, supercharger pulley, 3.7 L sleeves and pistons, and or more RPMs.

Also, someone called jokerz apparently does porting for the supercharger.

Last but not least the GT4 car uses this engine with a bigger supercharger from Harrop the tvs 1900.

People smarter than me on here might be able to comment on using E 85.

I know for twin turbo 911’s its epic

@VF Tuner is working on a few things that many of us have high hopes for.

 

[Tomwa]

JB4 will only make small changes to the car on the maps provided.

Granted, if you found a way to do "more" JB4 will continue adding more power potentially, but at some point you may hit limits of what is either possible or safe on a stock ECU+piggy back.

You can keep playing with the fuel types or methanol injection with JB4 and make more power, but at some point you'll hit another bottleneck even with better fuel.

Ultimately a smaller supercharger pulley is probably the next easiest thing to reach for more power. As long as the injectors don't run out of fuel you can relatively keep adding more psi with smaller pulleys. As NJ is inducting you'll eventually hit a point where you are outside the super chargers efficiency and stepping to a larger displacement supercharger might be best.

By this point you are thousands of dollars in and just waiting to find the next "weak point". Which, by most accounts won't be the Toyota motor for a while.

 

[luciddaydream]

JB4 will only make small changes to the car on the maps provided.

Granted, if you found a way to do "more" JB4 will continue adding more power potentially, but at some point you may hit limits of what is either possible or safe on a stock ECU+piggy back.

You can keep playing with the fuel types or methanol injection with JB4 and make more power, but at some point you'll hit another bottleneck even with better fuel.

Ultimately a smaller supercharger pulley is probably the next easiest thing to reach for more power. As long as the injectors don't run out of fuel you can relatively keep adding more psi with smaller pulleys. As NJ is inducting you'll eventually hit a point where you are outside the super chargers efficiency and stepping to a larger displacement supercharger might be best.

By this point you are thousands of dollars in and just waiting to find the next "weak point". Which, by most accounts won't be the Toyota motor for a while.

Ok thanks. Do you know of any pullys I could pick up? Are there any on the market?

 

[NJemira85]

JB4 will only make small changes to the car on the maps provided.

Granted, if you found a way to do "more" JB4 will continue adding more power potentially, but at some point you may hit limits of what is either possible or safe on a stock ECU+piggy back.

You can keep playing with the fuel types or methanol injection with JB4 and make more power, but at some point you'll hit another bottleneck even with better fuel.

Ultimately a smaller supercharger pulley is probably the next easiest thing to reach for more power. As long as the injectors don't run out of fuel you can relatively keep adding more psi with smaller pulleys. As NJ is inducting you'll eventually hit a point where you are outside the super chargers efficiency and stepping to a larger displacement supercharger might be best.

By this point you are thousands of dollars in and just waiting to find the next "weak point". Which, by most accounts won't be the Toyota motor for a while.

Jubu has a lot for 600hp. It’s probably a bit overpriced, but it’s still only 3.5L, which means the same set up w the sleeves and bigger pistons should be good for like 650+ w more tq.

This car at 600hp would really be an ideal daily and would also be a unique offering at the weight class with a manual.

There is really very little to do to a gt3 to add 100 hp, and you’d have nowhere near the torque.