SUPRA ULTIMATE JB4 GUIDE AND LOG REVIEW (V1)

[ColonelAdama]

Updated with the log info https://datazap.me/u/phantomx2k/jb4-race-bef-map-0?log=0&data=1-4

@Jesse DaBears.
Look at this log. Since Jb4 combined runs this one shows the same crazy boost spike hitting 9.1 psi just pulling out on the street. The car should not do that at 1:/3 throttle easing out

the back half of the graph where the run begins is reflashed and is the MHD tune. So 2 different flashes in the same chart

notice the iat doesn’t work and ff. Then the flash change and it suddenly works.

Drivability doesn’t really show in a log file all that well at least not the Jb4 logs

Not supposed to be crazy fast spikes like that

I know you guys may work with some younger clientele and some this is there first fast car. I’ve been doing this a long time over a lot of fast and a lot of fast turbo cars. I tuned and downpiped every one of my Mercedes 63S cars (GLC, C, E, GT63, GLE63) all making 700-800hp. I’ve owned a dozen fast mustangs (SC’s and NA) including a 2004 600hp cobra back in the day that’s still floating around YouTube, sprayed cars to.

so give me a little latitude when I say “it ain’t right” the kinda ain’t right that will hurt the motor.

Yeah I understand your concerns. What I am trying to say though, is using something like Map 1 with BEF enabled with your MHD BEF on, will not allow more than 16 psi to enter your engine. The throttle will just close. If its rough, its rough, and hopefully we can diagnose that. But neither Jesse or I have any way to help you without a proper log.

If there genuinely is something wrong with the BEF map, that is something you will need to discuss with Terry.

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[ColonelAdama]

@Jesse DaBears.
Look at this log. Since Jb4 combined runs this one shows the same crazy boost spike hitting 9.1 psi just pulling out on the street. The car should not do that at 1:/3 throttle easing out

the back half of the graph where the run begins is reflashed and is the MHD tune. So 2 different flashes in the same chart

notice the iat doesn’t work and ff. Then the flash change and it suddenly works.

Drivability doesn’t really show in a log file all that well at least not the Jb4 logs


Not supposed to be crazy fast spikes like that

I know you guys may work with some younger clientele and some this is there first fast car. I’ve been doing this a long time over a lot of fast and a lot of fast turbo cars. I tuned and downpiped every one of my Mercedes 63S cars (GLC, C, E, GT63, GLE63) all making 700-800hp. I’ve owned a dozen fast mustangs (SC’s and NA) including a 2004 600hp cobra back in the day that’s still floating around YouTube, sprayed cars to.

so give me a little latitude when I say “it ain’t right” the kinda ain’t right that will hurt the motor.

I am looking at your BEF data points one by one and I don't see anything to indicate a dangerous condition. AFR, fuel pressure, boost, targets, etc all normal.

You can certainly try the 91 octane "PUMP" BEF and see if anything works better. It'll just run milder timing than the race one. use it with map 1, bit 6 BEF enabled

 

[Phantomx]

Do you know which map that is? You downloaded the files as well there are 2 in there

the bef is hosed on race. You’re right nothing you guys can do with Terri‘s map. The throttle response is wrong, the boost, spikes all over, it surges it bucks. It’s like it’s the wrong tune for this car like completely wrong parameters. You noticed anomalies in the log as well, and then, when I flashback to MHD those anomalies go away. Trust me when I say, the car isn’t drivable with that race map loaded like I couldn’t take it on the road and actually try to drive it it would be undrivable

I’ve been trying to get Terri‘s help, but getting any more than a couple words and a response every two days isn’t very helpful

 

[ColonelAdama]

Do you know which map that is? You downloaded the files as well there are 2 in there

the bef is hosed on race. You’re right nothing you guys can do with Terri‘s map. The throttle response is wrong, the boost, spikes all over, it surges it bucks. It’s like it’s the wrong tune for this car like completely wrong parameters. You noticed anomalies in the log as well, and then, when I flashback to MHD those anomalies go away. Trust me when I say, the car isn’t drivable with that race map loaded like I couldn’t take it on the road and actually try to drive it it would be undrivable

I’ve been trying to get Terri‘s help, but getting any more than a couple words and a response every two days isn’t very helpful

Anything that says PS2 is for Pure Stage 2 turbo, or just bigger turbos in general. iirc

 

[Phantomx]

Thank you, That is hugely helpful. Might be a good idea if the JB 4 folks update that on their thread.

I’m headed to midnight tuning for a Dyno session now. Based on my mods the 91 tune probably not a good idea.

Going to Dyno what works at this time which is MHD e40 stage 2

if that goes well I can try JB4 map 4 which is 20 psi target. MHD is 18psi. Logically if the Jb4 works with Burgers map should work with this one.

If we get good results I’ll try a map5 22psi run.

at least I’ll be on the dyno where we can monitor without worrying about going 100mph down the road and trying to pay attention to the gauges and drive at the same time LOL.

that was why I was trying to get this sorted I booked this Dyno session awhile ago and it’s not easy to get and it’s expensive I want to get all my ducks in a row and not burn $$$ trying to figure stuff out.

 

[ColonelAdama]

Thank you, That is hugely helpful. Might be a good idea if the JB 4 folks update that on their thread.

I’m headed to midnight tuning for a Dyno session now. Based on my mods the 91 tune probably not a good idea.

Going to Dyno what works at this time which is MHD e40 stage 2

if that goes well I can try JB4 map 4 which is 20 psi target. MHD is 18psi. Logically if the Jb4 works with Burgers map should work with this one.

If we get good results I’ll try a map5 22psi run.

at least I’ll be on the dyno where we can monitor without worrying about going 100mph down the road and trying to pay attention to the gauges and drive at the same time LOL.

that was why I was trying to get this sorted I booked this Dyno session awhile ago and it’s not easy to get and it’s expensive I want to get all my ducks in a row and not burn $$$ trying to figure stuff out.

Sounds good. At least you have the OTS map to get data on.

 

[Phantomx]

Strapping down moment of truth LOL

 

[Phantomx]

Best run 436rwhp/531rwtq

JB4 didn’t do much for HP but managed 25lbft tq so not worth it. The MHD OTS e40 did 430/505

when you add drivetrain loss back in it’s about 500hp crank so a down pipe, some exhaust and filter and tune added 150+ hp over the stock 335 the 2020 had.

seeing if we can grab a custom e30 map if there is any more power to be had.

graph below

Run 1 - MHD OTS - super smooth line

Run 2 - MHD OTS and JB4 Map 4 20psi target added. - smooth but no real change in power

Run 3/4 - MHD OTS JB4 Map 5 22psi target. Run 3 pulled boost and timing. Run 4 adaptations started kicking in and started looking better. Not as smooth as run 1-2

cooling down will go again… hopefully adds some new info to the tuning scene with real numbers.

 

[ColonelAdama]

Best run 436rwhp/531rwtq

JB4 didn’t do much for HP but managed 25lbft tq so not worth it. The MHD OTS e40 did 430/505

when you add drivetrain loss back in it’s about 500hp crank so a down pipe, some exhaust and filter and tune added 150+ hp over the stock 335 the 2020 had.

seeing if we can grab a custom e30 map if there is any more power to be had.

graph below

Run 1 - MHD OTS - super smooth line

Run 2 - MHD OTS and JB4 Map 4 20psi target added. - smooth but no real change in power

Run 3/4 - MHD OTS JB4 Map 5 22psi target. Run 3 pulled boost and timing. Run 4 adaptations started kicking in and started looking better. Not as smooth as run 1-2

cooling down will go again… hopefully adds some new info to the tuning scene with real numbers.

Looks pretty strong on the OTS. Looks like throttle closures on the JB4 stacked runs. Can you post the logs?

 

[Phantomx]

Yea we are messing with map6 we are up to 457rwhp/525tq

it had a bit of a fit and decided it doesn’t want to play nice.

 

[Phantomx]

Final setup 460/505 graph attached

https://datazap.me/u/phantomx2k/bef-map-5?log=0&data=1-4

 

[ColonelAdama]

Final setup 460/505 graph attached

https://datazap.me/u/phantomx2k/bef-map-5?log=0&data=1-4

Log looks clean. Few minor timing corrections. Looks like Map 5 stacked with MHD OTS works well.

You'd probably benefit from a little more ethanol in the mix. What blend are you running now?

 

[Jesse DaBears]

Just do a normal log and post.... I see a peak of 9 PSI at 50% throttle input.

Pedal input is what I meant.

 

[Jesse DaBears]

Final setup 460/505 graph attached

https://datazap.me/u/phantomx2k/bef-map-5?log=0&data=1-4

460whp is weak for this setup. More Ethanol, more boost. We do that with just a jb4.

 

[Jesse DaBears]

Its hitting 20PSI tapered down to 18?

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