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Showing results 1 to 25 of 51 Search: Posts Made By: JCB
Forum: Infiniti Q50 Q60 VR30DDTT 01-21-2021, 02:27 PM
Replies: 5,845
Views: 762,586
Posted By JCB
Kuni130 - something seems off between your...

Kuni130 - something seems off between your throttle and pedal position. Looks from the log like you are letting up partially on the pedal but the throttle is staying at 100% for an additional 1-2...
Forum: Infiniti Q50 Q60 VR30DDTT 01-19-2021, 08:16 AM
Replies: 5,845
Views: 762,586
Posted By JCB
No need to worry about the ambient temperature. ...

No need to worry about the ambient temperature. You just need to let the car warm up a bit more. The Water Temp cutoff is 160F I believe for the JB4. If you start a pull at just over that, the...
Forum: Infiniti Q50 Q60 VR30DDTT 12-28-2020, 04:56 PM
Replies: 5,845
Views: 762,586
Posted By JCB
Nice...you didn't data log this run as well did...

Nice...you didn't data log this run as well did you? Would like to compare with mine at similar time stamps and RPM. See where mine differs from someone who pretty much has theirs dialed in and...
Forum: Infiniti Q50 Q60 VR30DDTT 12-22-2020, 03:29 PM
Replies: 5,845
Views: 762,586
Posted By JCB
Both logs look healthy. I don't see any big...

Both logs look healthy. I don't see any big drops in the Ign1 field (timing) and looks like the normal curve through the rev range. I would try Map 4 and see how that looks.
Forum: Infiniti Q50 Q60 VR30DDTT 12-02-2020, 08:18 PM
Replies: 5,845
Views: 762,586
Posted By JCB
With our trans you have to hit shift right at 6k...

With our trans you have to hit shift right at 6k and hope it shifts by 6500 in 1st gear. A dual clutch would be awesome but this slushbox is tried and proven so will likely last the life of the car...
Forum: Infiniti Q50 Q60 VR30DDTT 10-22-2020, 12:26 PM
Replies: 5,845
Views: 762,586
Posted By JCB
Addison650 - I don't see anything in the log to...

Addison650 - I don't see anything in the log to suggest knock. Ign1 is where knock shows up and your log looks very healthy to me. Why do you think it is knocking? Are you hearing it in the cabin?
Forum: Infiniti Q50 Q60 VR30DDTT 10-22-2020, 06:33 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Can you post a log? Everyone's going to be a bit...

Can you post a log? Everyone's going to be a bit different depending on conditions and fuel quality.
Forum: Infiniti Q50 Q60 VR30DDTT 10-21-2020, 11:47 AM
Replies: 5,845
Views: 762,586
Posted By JCB
I have not found any JB4 tricks to launch at...

I have not found any JB4 tricks to launch at higher boost. Brake boosting gets me to about 2 pounds of boost at launch. The EWG control wires make it feel like it is launching harder, but I don't...
Forum: Infiniti Q50 Q60 VR30DDTT 10-17-2020, 09:06 AM
Replies: 5,845
Views: 762,586
Posted By JCB
The zero to sixty log looks great. The highway...

The zero to sixty log looks great. The highway pull looks a little strange to me...seemed like timing was dropping (ign1) but you shifted too early to make a determination. Then in 4th gear, the...
Forum: Infiniti Q50 Q60 VR30DDTT 10-13-2020, 09:32 AM
Replies: 13
Views: 544
Posted By JCB
If it is a 2019 and 10k miles, why are you...

If it is a 2019 and 10k miles, why are you messing with it? Was it salvage and not under warranty? Take off the JB4 and bring it in to a dealer if the warranty is not invalid for some reason.
Forum: Infiniti Q50 Q60 VR30DDTT 10-08-2020, 09:19 AM
Replies: 5,845
Views: 762,586
Posted By JCB
New2TheBoost - Maybe do a pull from a dig - zero...

New2TheBoost - Maybe do a pull from a dig - zero to 80 or however fast you are comfortable and safe. Maybe the start of the pull is always going to be lower than the next gear after everything is...
Forum: Infiniti Q50 Q60 VR30DDTT 10-08-2020, 07:32 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Something looks off on your ecu_psi. The values...

Something looks off on your ecu_psi. The values seem low, especially in 2nd gear. My 2018 Luxe is averaging between 8-9 PSI. In map 5 that results in total boost of 14-16PSI. On a recent zero to...
Forum: Infiniti Q50 Q60 VR30DDTT 10-06-2020, 07:33 AM
Replies: 5,845
Views: 762,586
Posted By JCB
You might get better luck contacting them here. ...

You might get better luck contacting them here.

jb4connect@burgertuning.com
Forum: Infiniti Q50 Q60 VR30DDTT 10-05-2020, 03:58 PM
Replies: 5,845
Views: 762,586
Posted By JCB
That topic has come up here before and Terry...

That topic has come up here before and Terry stated that the fuel wires provide a benefit on all types of fuel. I guess the logic of the concern is that a richer AFR would help deter engine knock...
Forum: Infiniti Q50 Q60 VR30DDTT 10-05-2020, 08:52 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Sorry, not a senior member, but your log looks...

Sorry, not a senior member, but your log looks good to me. Fuel wires will provide some marginal benefit but not necessary. If you have them hook them up. I would try a similar pull on map 3 next.
Forum: Infiniti Q50 Q60 VR30DDTT 09-28-2020, 10:18 AM
Replies: 5,845
Views: 762,586
Posted By JCB
I am still learning also - but what you say makes...

I am still learning also - but what you say makes sense. Allows more exhaust gas to bypass the turbos, thereby allowing more gradual build of boost. The most frequent positive feedback about...
Forum: Infiniti Q50 Q60 VR30DDTT 09-28-2020, 08:18 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Redgoyabean - these logs look much better than...

Redgoyabean - these logs look much better than the one you posted 09-20-2020, 08:08 AM. Still show a drop to 2.5 at 4500 -5500 RPM (not sure it is enough to be concerned about). Maybe set boost...
Forum: Infiniti Q50 Q60 VR30DDTT 09-28-2020, 07:19 AM
Replies: 5,845
Views: 762,586
Posted By JCB
The fuel wires will lean out the AFR at higher...

The fuel wires will lean out the AFR at higher RPM. Where you see low 11 values they will be bottom out at high 11 or low 12. This provides a bit more power at high RPM. Many run without...
Forum: Infiniti Q50 Q60 VR30DDTT 09-22-2020, 02:34 PM
Replies: 5,845
Views: 762,586
Posted By JCB
Go back to firmware explanations in page 1 of...

Go back to firmware explanations in page 1 of this thread. I believe it is in User Settings - Boost Drop 1st, 2nd, 3rd. Looks like this is a subtract from whatever map you are running. I would...
Forum: Infiniti Q50 Q60 VR30DDTT 09-21-2020, 07:55 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Redgoyabean - The log you just posted at 8:08 am...

Redgoyabean - The log you just posted at 8:08 am does not look good. You timing Ign1 is dropping sharply. Don't know the exact rule of thumb, but when Ign value gets below 5 it is a concern. Yours...
Forum: Infiniti Q50 Q60 VR30DDTT 09-18-2020, 09:44 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Don't know if I qualify as N54 team, but those...

Don't know if I qualify as N54 team, but those logs look good to me. Timing looks good....recovers well after the shifts. Might try the next map up and see what it looks like.
Forum: Infiniti Q50 Q60 VR30DDTT 09-17-2020, 11:26 AM
Replies: 5,845
Views: 762,586
Posted By JCB
You will need to see what your timing is doing at...

You will need to see what your timing is doing at that high PSI (Ign1). If you see drops of 2-3+ in value or very low (below 5) during a pull you need to back off on boost target.
Forum: Infiniti Q50 Q60 VR30DDTT 09-17-2020, 07:34 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Many put the OBD cable through the fender and in...

Many put the OBD cable through the fender and in through the door so you don't have to mess with the grommet. I was skeptical at 1st, but long term experience with that method is - I never notice...
Forum: Infiniti Q50 Q60 VR30DDTT 09-14-2020, 09:56 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Are you able to disable the EWG control and see...

Are you able to disable the EWG control and see if the timing returns to normal? I don't recall if there is a setting to disable them or you have to unplug the wires. I realize that would be a bit...
Forum: Infiniti Q50 Q60 VR30DDTT 09-14-2020, 06:39 AM
Replies: 5,845
Views: 762,586
Posted By JCB
Redgoayabean - your car does not seem to be happy...

Redgoayabean - your car does not seem to be happy on any of those logs. Where did you get your 93 Octane gas? Was it a very hot day? Timing values are very low and don't want to recover after...
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