JB4

[Gearbangin]

With engine off?

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[LS3Twins]

With engine off?

Correct. Engine off and hit start button 3 times very fast and do not hold.

 

[geert.bieseman]

Correct. Engine off and hit start button 3 times very fast and do not hold.

Just confirming that this is indeed correct.
Proper procedure to put the car in diagnostic mode to read out the codes or the flash the ecu

 

[Diem68]

JB4 - Can't access the maps

I have the JB4 completely connected to my car, including the OBDII connection, but I can’t access the maps through the BC button on the steering wheel stalk. When I hold the button down, nothing happens.

Any suggestions?

Thanks!

 

[satindragon]

The dash integration isn’t done yet for the Supra. Currently you will need either the data cable or the Bluetooth adapter.

 

[Lysii]

Does Anyone know if a M340 jb4 will work on my 2021 Supra 3.0 premium?

 

[Rocksandblues]

Ask Terry

 

[supraboi]

 

[Benjilis]

I am currently the only one using JB4 on the Supra. I have been working with Terry and have had it on there for almost 4 weeks now. I made 424whp and 482ft/lbs on Map 3 and that is on 93 octane with intake and downpipe. He is not working on a calibration as this was a standard B58 JB4 and everything was plug and play.

Catless downpipe? If so, what steps did you take to avoid a cel?

 

[Benjilis]

Wondering if you can help so I got the titanmotor sports downpipe with 02 spacer plus JB4 with map 3 on 93 oct. I’m getting check engine light and it’s throw the codes below. When I try to clear with Jb4 nothing happens.. help please

I’m thinking about the Jb4 and Titan catless dp. Do you have a CEL from the catless? If so, how did you remove it and how often?

 

[Benjilis]

OK, you sold me, just placed an order for Titan down pipe and o2 spacer.

I have been waffling around unable to decide what down pipe to purchase, due to my concerns of getting a cel.

Only thing that sucks is no 93 octane by me. Looks like I will be stuck in map 1. ;(

Have you gotten a CEL? If so, could thejb4 clear it? Does it come up all the time?

 

[Rocksandblues]

you can't avoid CEL with catless downpipe and JB4
the o2 spacer is a waste of money and does not work.

 

[Benjilis]

you can't avoid CEL with catless downpipe and JB4
the o2 spacer is a waste of money and does not work.

What downpipe can I get that will compare and be about the same price as a catless?

 

[Rocksandblues]

What downpipe can I get that will compare and be about the same price as a catless?

unaware of any catted pipes that sound as good, won't throw a light, and cost the same.

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