Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
Let oil temp get to 180 before romping on it. This applies always. 3k in 3rd and wind out to 6500. Try not to hit kickdown. Go enjoy your newfound power.
7
BMS VW GTI JB4 info thread
- Thread starter George Smooth
- Start date
afman916
Ready to race!
- Location
- Raleigh, NC
Christ it's so....smooth. And deceptively fast. I want more.
S3 Freak
Passed Driver's Ed
- Location
- South Africa
Hi guys,
Not sure if anyone else experienced this issue but I recently bought a JB4 data cable and when I connect the cable to the JB4 and start the car it throws a couple of faults and EPC light on, if I clear the faults using VCDS and start without the data cable no faults are shown.
I had a look at the USB cable and all 3 wires look intact could it be the JB4 unit itself?
Not sure if anyone else experienced this issue but I recently bought a JB4 data cable and when I connect the cable to the JB4 and start the car it throws a couple of faults and EPC light on, if I clear the faults using VCDS and start without the data cable no faults are shown.
I had a look at the USB cable and all 3 wires look intact could it be the JB4 unit itself?
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
Sounds like the cable is bad and shorting something. Contact BMS and ask for a new one.
ourlee
Drag Racing Champion
- Location
- 3085 Pampas Streat
- Car(s)
- 17 TT 17 GTI S
Went to map 2, got a check engine light on the 3rd launch, 73 degrees F. Code was “low fuel pressure”. Any thoughts? My logs weren’t good, George asked for more throttle. Any thoughts while I wait for a chance to send legit logs?
My tuner cleared the code and I did one launch today, 80 degrees F, no check engine light, car’s running great.
My tuner cleared the code and I did one launch today, 80 degrees F, no check engine light, car’s running great.
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
FOL is probably set too high. Does the TT have an IS38? If so, it needs to be 40.
ourlee
Drag Racing Champion
- Location
- 3085 Pampas Streat
- Car(s)
- 17 TT 17 GTI S
Nope IS20. I’ll check it, THANKS!
And for the record, I read every word of this awesome thread
Should I do 40 with the IS20? Am I sacrificing performance at 40 v 50?
And for the record, I read every word of this awesome thread
Should I do 40 with the IS20? Am I sacrificing performance at 40 v 50?
Last edited:
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
Nope IS20. I’ll check it, THANKS!
And for the record, I read every word of this awesome thread
Should I do 40 with the IS20? Am I sacrificing performance at 40 v 50?
if its 50 now it needs to go to 40. when in doubt, log.
ourlee
Drag Racing Champion
- Location
- 3085 Pampas Streat
- Car(s)
- 17 TT 17 GTI S
Thanks Diggs. I think we should all send Diggs some liquor or something.
afman916
Ready to race!
- Location
- Raleigh, NC
Agreed.
Diggs, I was going to do some messing around with Map 6 this weekend, but don't really know if I stand to gain much from Map 2. What possible suggestions would you have given my setup (MAP catted DP, CTS TIP, stock airbox with AFE, stock exhaust and IC, 93 gas)? Maybe just looking for a little more oomph lower in the RPM range, if possible given my setup. Thanks again for all your help man!
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
I'd rather you donate to charity. Thanks for the offer though.
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
Map2 is pretty potent down low. Try this:
1500 - 2
2000 - 3
2500 - 4
3000 - 4.5
3500 - 5
4000 - 5
4500 - 6
5000 - 7
5500 - 6
6000 - 6
6500 - 5
7000 - 4
afman916
Ready to race!
- Location
- Raleigh, NC
Will do, thanks man! I'll report back with some logs this weekend.
George Smooth
Drag Race Newbie
- Location
- South Africa
We have been working on reducing the boost per gear below stock for the stacked guys and decided to add a Valet map since lots of people have requested it. Below is a link to the test firmware for this.
What changes is in map 4 the boost is halved and is the valet map on this version of firmware that will reflect as 60/7/6. The JB4 safety map and logging for stock or flashed is map 0 now. For all safety the JB4 will default to map 4 Valet map.
You can find the Valet firmware here in post 2: http://www.n54tech.com/forums/showthread.php?p=604740#post604740
What changes is in map 4 the boost is halved and is the valet map on this version of firmware that will reflect as 60/7/6. The JB4 safety map and logging for stock or flashed is map 0 now. For all safety the JB4 will default to map 4 Valet map.
You can find the Valet firmware here in post 2: http://www.n54tech.com/forums/showthread.php?p=604740#post604740
ourlee
Drag Racing Champion
- Location
- 3085 Pampas Streat
- Car(s)
- 17 TT 17 GTI S
I’ll do that. Cheers.