B58 JB Plus Quick Install Tuner ....

[jtsang25]

Definitely noticeable and worth the money. The only other thing I have aside from the Jb+ is an ARK DTS exhaust. I've been considering upgrading to jb4 but I read some stuff about some people not liking the power delivery from it..? I enjoy the Jb+ and the way the car feels so not sure if I'll upgrade

You can "tune" the jb4 and get a custom map. Not as extensive as what you can do with a full tune, but custom jb4 smooths alot of things out.

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[66joeyn]

Thank you all for the input. Great information. I hope you all have a wonderful weekend.

 

[BMWAF]

I put my car on a dyno today: My car is a fairly stock MY23 MT running 98RON with an AWE Touring (non resonated) exhaust; NVS Carbon intake lid (resonator delete) and of course a JB+ set at 3PM.

 

[66joeyn]

Your torque is a lot higher than I would have expected. That’s great.

 

[swrdply400mrelay]

I put my car on a dyno today: My car is a fairly stock MY23 MT running 98RON with an AWE Touring (non resonated) exhaust; NVS Carbon intake lid (resonator delete) and of course a JB+ set at 3PM.

For US that’s about 414 hp and 401 lb-ft?

Was this at the wheels?

Pretty good numbers!

 

[BMWAF]

For US that’s about 414 hp and 401 lb-ft?

Was this at the wheels?

Pretty good numbers!

This was on a Dyno Innovations hub dyno. And yeah, according to Google its 420whp and 407lb-ft?

 

[ColonelAdama]

This was on a Dyno Innovations hub dyno. And yeah, according to Google its 420whp and 407lb-ft?

Nice, I guess that shows that the JB+ meets its performance claims of ~30whp.

 

[Eyelise]

Car and Driver dynoed the stock Supra at 382 whp so that makes it 38 whp bump for the JB+ which is quite amazing

 

[CarGuy11]

I put my car on a dyno today: My car is a fairly stock MY23 MT running 98RON with an AWE Touring (non resonated) exhaust; NVS Carbon intake lid (resonator delete) and of course a JB+ set at 3PM.

Did you try to remove JB+ and run it stock? Only way to see true gain.

 

[BMWAF]

Car and Driver dynoed the stock Supra at 382 whp so that makes it 38 whp bump for the JB+ which is quite amazing

I doubt it's that big a jump to be honest, after accounting for other variables. The exhaust may be adding a little bump too.. not to mention stickers of course. ?

Did you try to remove JB+ and run it stock? Only way to see true gain.

Nah.. I was really just curious to see what the car was doing as is.

 

[Eyelise]

I doubt it's that big a jump to be honest, after accounting for other variables. The exhaust may be adding a little bump too.. not to mention stickers of course. ?



Nah.. I was really just curious to see what the car was doing as is.

If you didn't replace the downpipe I doubt your exhaust added that much. It certainly could be a dyno thing, the before and after would have been nice. Anyway more evidence that the JB+ does indeed add something, and likely a noticeable something for those in doubt.

 

[Erty]

I put my car on a dyno today: My car is a fairly stock MY23 MT running 98RON with an AWE Touring (non resonated) exhaust; NVS Carbon intake lid (resonator delete) and of course a JB+ set at 3PM.

I want to see how this would look with a catted/catless setup. Probably little to no change

 

[Syeeee]

I want to see how this would look with a catted/catless setup. Probably little to no change

I'd assume catless would add more than a catback

 

[Eyelise]

JB+ really doesn’t work that way. 3-4psi boost everywhere power regulated by whether the DMU pulls timing if things get too hot. I would bet the downpipe is not an issue. You would likely need the JB4 and custom tune to see a benefit.

 

[swrdply400mrelay]

Any issues with Jb+ with an after market catted down pipe with a manual transmission? I was thinking of starting off at lower setting?

thx

Also interested to see if any MT with catted dp have had any issues.

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