Emira JB4 Tuning Now Available for I4 & V6 Cars!

[kitkat]

Yes. This was with Map 1 and actual 91 octane gas. It looks like some or most of the people posting dynos of Map 1 still have 93 in the tank, which would allow Map 1 to operate right to its limit due to the extra headroom against knocking the 93 would have. I don't have 93 available so I can't do a Map 1 - Map 2 comparison.

…

The JB4 dyno I got showed what I felt when switching to Map 1; a definite increase in torque at the lower rpms. What it also shows, is that through multiple dyno pulls spread out over a year with several different mods, once the rpms get close to 5k all the lines pretty much join together. That tells me the exhaust is the bottleneck. I believe all the people showing bigger gains have deleted their 3rd cat which would reduce back pressure and allow for more performance. Most people also seem to be using Dynojets while I'm on a hub dyno which are known to be more conservative.

In order to give you some reference data, the dyno showing meow’s +57whp gain was on pump ACN91 with a bottle of Boostane shot — the tiny little bottle. He only has a valve controller no other modifications. Ambient was around 85F and it was on a hub dyno as well. The numbers were similar without and with the boostane shot.

 

[Eagle7]

In order to give you some reference data, the dyno showing meow’s +57whp gain was on pump ACN91 with a bottle of Boostane shot — the tiny little bottle. He only has a valve controller no other modifications. Ambient was around 85F and it was on a hub dyno as well. The numbers were similar without and with the boostane shot.

So that's on an otherwise totally stock car? Do you have the dyno chart you can post? I'd like to see how the power curve developed.

 

[mr.suntorytime]

So that's on an otherwise totally stock car? Do you have the dyno chart you can post? I'd like to see how the power curve developed.

Emira JB4 Tuning Now Available for I4 & V6 Cars!

Had some pretty good power gains from Map 1 with a friend's car yesterday on JB4 on a dynapack yesterday. Had some trouble getting the car into test mode initially but the car gained 57.9whp and 33.7 lb-ft over stock and all he has is a valve controller. Oddly map 2 with ACN91 + boostane shot...

www.emiraforum.com

 

[Brokenblinker]

So that's on an otherwise totally stock car? Do you have the dyno chart you can post? I'd like to see how the power curve developed.

Seems like there's some confusion, so compiling it all here (from posts from @sendmeows and @kitkat, I don't have any insider info).

Setup Details:

• Car Details: valve controller, no other modifications.
• Ambient temp: around 85 deg
• Dyno Details: hub dyno, all figures taken same day in same session.

Labeled Dyno Plot:

* Power of green line is approximated by looking at legend. Power of red and peak taken off bottom details

Dyno Figure Legend:

red	stock	~332HP
green	map1 + 91	~372HP (+40)
lightblue	map1 + "93"	~390HP (+58)
grey	map2 + "93"	~390HP (+58)

* 93 was approximated via 91 fuel + a boostane shot.


Interestingly, it also looks like map1 with 91 octane would have made more power if run all the way to redline like the others....

 

[kitkat]

Yup good summary.

 

[sendmeows]

Seems like there's some confusion, so compiling it all here (from posts from @sendmeows and @kitkat, I don't have any insider info).

Setup Details:

• Car Details: valve controller, no other modifications.
• Ambient temp: around 85 deg
• Dyno Details: hub dyno, all figures taken same day in same session.

Labeled Dyno Plot:
View attachment 69053
* Power of green line is approximated by looking at legend. Power of red and peak taken off bottom details

Dyno Figure Legend:

red	stock	~332HP
green	map1 + 91	~372HP (+40)
lightblue	map1 + "93"	~390HP (+58)
grey	map2 + "93"	~390HP (+58)

* 93 was approximated via 91 fuel + a boostane shot.


Interestingly, it also looks like map1 with 91 octane would have made more power if run all the way to redline like the others....

thanks for summarizing. the green 372hp line was our first successful run. subsequent runs were to redline at 370 and 368.

 

[Citizen]

Hey guys,

After following this thread closely and finally pulling the trigger on a JB4, I’ve got to say… I’m a bit disappointed with the results.

My car has a 3rd cat delete + Milltek open valve.

A buddy here in Dubai (also on this forum) installed his JB4 before me, so we ran some tests — my car stock (with the mods mentioned above) vs his car with the exact same mods + JB4.

Honestly, the results were underwhelming. From a 40 to 140 pull, the difference was basically 1 m length in his favor… nothing crazy.

Fast forward a few weeks, I installed my own JB4, and… I can’t feel any real difference, apart from whatever my brain wants to believe because of placebo or wishful thinking.

Apparently, in Dubai we don’t have the equivalent of US 93 octane. We’ve got 98 here, which is basically equivalent to 91 for Map 1 — and yeah… no noticeable difference.

To be fair, it’s summer here, and our insane heat probably isn’t helping the car’s performance, but still… I expected to at least see more of a gap between stock and JB4.

P.S.: Why has no one in the US posted any stock vs JB4 race videos yet?

 

[Tomwa]

Not many folks get together to do drag or street light races, it's pretty solidly outside the "intended use case" for the Emira.

If there's really strong interest I'm sure it could be arranged, but it's just not a priority.

I suspect your 91 octane equivalent and high temps are really keeping you from enjoying the benefits.