N54Tech.com - International Turbo Racing Discussion
importroller importroller is offline
Junior Member
Posts: 39
Join Date: Sep 2019
Car: 2016 Q50 3.0t
Default Boost target question - 05-07-2020, 09:52 PM

I posted a question on FB, but since I'm running jb4, I think this is a better venue.

With a jb4, with FW and WG connectors, bms x, ldp and cbe. With this setup, what is the highest psi I should set to not blow the turbos? I'm in Cali, so we don't have 93. So usually running 91 and occasionally 91/e85 mix?
Reply With Quote
jrobohm's Avatar
jrobohm jrobohm is offline
Junior Member
Posts: 437
Join Date: Jul 2017
Car: 2017 Q50 3.0T Premium RWD
Default 05-08-2020, 12:56 PM

For a non-red sport VR30 and 91 octane fuel - start with Map 1, log, and submit to the forum for review. If all looks good, move up to Map 2 and repeat. There is no golden rule in how much boost psi your car can handle for a given fuel and all of the other variables. Logging is the only way to know how your car is doing and be safe with adding more boost.

2017 Q50 Premium RWD
  • BMS JB4 w/ Fuel Wires
  • BMS WMI w/ PM8s
  • Pure Stage 2 Turbos
  • Z1 PU Motor Mounts
  • AMS HX w/ Aux Tank & IC Pump
  • AMS HPFP (RA338) & LPFP
  • AMS Flex Fuel Kit v2
  • Fast Intentions Res. Touring 2.5 CBE
  • Mishimoto Oil Catch Can
  • EcuTek Flash (Seb @ Specialty Z)
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2020, N54tech.com