JB4 vs Unlocked Tune

[Jakester]

Something that caught my eye with MHD vs JB4 was the cold start feature with MHD, is it still useable with a partial unlock? If so, how much can it quite down the car on startup with a full exhaust system?

I have not messed with cold start but I can tell you that I have full access to adjusting the burbles and have personally used and adjusted them. It works no problem.

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[D3ad_Hand]

Yep

Sound good to mee, might get me one soon

 

[stormgreysupra]

If you are planning on keeping it simple with basic bolt ons, an ecu unlock and tune us simply not worth it. You will make maybe 10-20whp more.

 

[32bitsofGil]

If you are planning on keeping it simple with basic bolt ons, an ecu unlock and tune us simply not worth it. You will make maybe 10-20whp more.

This is downright incorrect. At $1200 for the ECU unlock from Femto + MHD license + MHD dongle the OTS maps will allow for up to 470HP on stock fueling with a downpipe and some E content.

 

[stormgreysupra]

This is downright incorrect. At $1200 for the ECU unlock from Femto + MHD license + MHD dongle the OTS maps will allow for up to 470HP on stock fueling with a downpipe and some E content.

Downpipe with a JB4 on E30 will make 450-470whp. MHD can make a little more than that 470-490whp on the OTS E30 map. So yes my comment was correct.

 

[32bitsofGil]

Downpipe with a JB4 on E30 will make 450-470whp. MHD can make a little more than that 470-490whp on the OTS E30 map. So yes my comment was correct.

With a custom tune these cars are doing 500+ on MHD with stock fueling.

Any ecu tune will be leagues better than JB4 unless you only care about roll racing, not how well the car actually drives.

 

[stormgreysupra]

With a custom tune these cars are doing 500+ on MHD with stock fueling.

Any ecu tune will be leagues better than JB4 unless you only care about roll racing, not how well the car actually drives.

If you add custom tuning to MHD that's another $600-700. Like I said cost to value in this scenario the JB4 is better. I have had both on two separate cars.

You can also get a custom map from Jesse for the JB4 by the way and make more power with smoother delivery than with the out of the box settings.

 

[Dr. Supra]

I will be selling my jb4 for $550 shipped this week. I sent out my ecu for bm3 unlock. If anyone is interested in a jb4

 

[Dr. Supra]

If you add custom tuning to MHD that's another $600-700. Like I said cost to value in this scenario the JB4 is better. I have had both on two separate cars.

You can also get a custom map from Jesse for the JB4 by the way and make more power with smoother delivery than with the out of the box settings.

$700 for 510whp/550tq and whooping hellcats. Very well worth it. Jb4 can't do that unless with meth but then again, with meth you'll spend more money than a custom tune on bm3/mhd.

 

[Jesse DaBears]

You'd think I'd be pretty bias with my response BUT I'm really not.

If there are no objections to additonal money required than 100% ECU tuning over JB4 all day.

However, if on a budget jb4 will definitely do the trick for improved performance, especially since you can pick up used jb4s and resell them when you are done.

Also for those talking about hp numbers, they don't mean much. I have 50+ videos of jb4 supras beating out ecu tuned supras with comparable mods and fuel and same the other way. It's all about how things are set up and the driver. I know plenty of ecu tuned supras with flex fuel that still run low 11s in the 1/4 and 8-9s 60-130. I'd say the majority of them do.

Here's my recommendation. Be realistic about your goals and wants and go from there.

Everyone wants a 8 second supra but no one wants 8 second supra problems.

 

[Mason]

I know plenty of ecu tuned supras with flex fuel that still run low 11s in the 1/4

 

[Jesse DaBears]

You'll crack your 10s. Just need a good launch it's tough lol

 

[AJRMKV]

I know for sure I’ll want a larger turbo (on pump) eventually so I’ll need to do an unlock + MHD.

it’s nice to have the option open and the improved driveability.

 

[GoldenEye]

Unless you track your car or a hardcore street racer, just get the JB4. Why spend so much more money for a faster car when all you do is zip from stop light to stop light?

 

[Dr. Supra]

I know for sure I’ll want a larger turbo (on pump) eventually so I’ll need to do an unlock + MHD.

it’s nice to have the option open and the improved driveability.

Why not bm3?

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