Nissan 370Z Forum  

Brake Boosting

Just out of curiosity, I am hoping to single turbo right after chirstmas this year, but is this possible? I know I have tried playing around with the Z going

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Forced Induction


Like Tree25Likes

Reply
 
LinkBack Thread Tools Display Modes
Old 05-24-2014, 12:15 AM   #1 (permalink)
Track Member
 
Join Date: Mar 2012
Location: Puyallup
Posts: 856
Drives: 09 Nissan 370z MB M6
Rep Power: 14
Japanjay is on a distinguished road
Default Brake Boosting

Just out of curiosity, I am hoping to single turbo right after chirstmas this year, but is this possible? I know I have tried playing around with the Z going down the road and holding the brake while applying the gas and get nothing. I also know you can not power brake the car. The ECU recognizes you are on the brake and doesn't apply power.

Again just wondering, I tried searching and came up with nothing.
Bill likes this.
Japanjay is offline   Reply With Quote
Old 05-24-2014, 12:58 AM   #2 (permalink)
A True Z Fanatic
 
Jordo!'s Avatar
 
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 417
Jordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond repute
Default

Allegedly, some of the ROMS in uprev now have a option that turns off the brake on/throttle kill issue.

EDIT: see this thread. ECU ; stock ECU Vs Nismo ECU difference this post ECU ; stock ECU Vs Nismo ECU difference
__________________
Enjoy it. Destroy it.

Last edited by Jordo!; 05-24-2014 at 01:10 AM.
Jordo! is offline   Reply With Quote
Old 05-24-2014, 07:49 AM   #3 (permalink)
A True Z Fanatic
 
esfourteen's Avatar
 
Join Date: Mar 2010
Location: LI, NY
Posts: 1,375
Drives: 40th TT
Rep Power: 18
esfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud of
Send a message via AIM to esfourteen
Default

Quote:
Originally Posted by Jordo! View Post
Allegedly, some of the ROMS in uprev now have a option that turns off the brake on/throttle kill issue.

EDIT: see this thread. ECU ; stock ECU Vs Nismo ECU difference this post ECU ; stock ECU Vs Nismo ECU difference
I have a 2010 and my rom isn't supported :/
esfourteen is offline   Reply With Quote
Old 05-24-2014, 08:08 AM   #4 (permalink)
Premium Member
 
SouthArk370Z's Avatar
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324197
SouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond reputeSouthArk370Z has a reputation beyond repute
Default

Won't pulling the brake light fuse enable one to power brake? Or am I thinking of something else?
Jordo! and Staples like this.
__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma
SouthArk370Z is offline   Reply With Quote
Old 05-24-2014, 12:07 PM   #5 (permalink)
A True Z Fanatic
 
Join Date: Mar 2009
Location: Chicago
Posts: 3,653
Drives: 370
Rep Power: 944523
phunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond repute
Default

Cut the brake signal wire to the ecu and put a switch inline. Turn off the switch when you want to do it.
cdoxp800 and Jordo! like this.
__________________
Charles @ CJ Motorsports : Website | Facebook | Instagram | YouTube
Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph
phunk is offline   Reply With Quote
Old 05-24-2014, 01:15 PM   #6 (permalink)
A True Z Fanatic
 
Jordo!'s Avatar
 
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 417
Jordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond repute
Default

^^^ these are the other two ways
__________________
Enjoy it. Destroy it.
Jordo! is offline   Reply With Quote
Old 05-24-2014, 08:26 PM   #7 (permalink)
Track Member
 
Join Date: Mar 2012
Location: Puyallup
Posts: 856
Drives: 09 Nissan 370z MB M6
Rep Power: 14
Japanjay is on a distinguished road
Default

Phunk you got a link for a DYI on locating and which wire exactly? Would I just splice in at the fuse box? Also I remember reading somewhere on here the fuse pulling method which I am assuming will accomplish the same as splicing and switching it throw all the dash lights on? And then I could have swore to turn them off you have to disconnect the power terminal and reconnect?

Last edited by Japanjay; 05-24-2014 at 08:31 PM.
Japanjay is offline   Reply With Quote
Old 05-25-2014, 01:39 AM   #8 (permalink)
Premium Member
 
Join Date: Jan 2014
Location: So cal
Posts: 371
Drives: Z
Rep Power: 11
SlowZ is on a distinguished road
Default

I had a switch built into my 350z that would turn off the brake lights when I wanted to do a burn out
SlowZ is offline   Reply With Quote
Old 05-25-2014, 03:03 AM   #9 (permalink)
A True Z Fanatic
 
Jordo!'s Avatar
 
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 417
Jordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond repute
Default

Quote:
Originally Posted by Japanjay View Post
Phunk you got a link for a DYI on locating and which wire exactly? Would I just splice in at the fuse box? Also I remember reading somewhere on here the fuse pulling method which I am assuming will accomplish the same as splicing and switching it throw all the dash lights on? And then I could have swore to turn them off you have to disconnect the power terminal and reconnect?
I think details can be found here How to completely disable the VDC
__________________
Enjoy it. Destroy it.
Jordo! is offline   Reply With Quote
Old 05-25-2014, 04:03 PM   #10 (permalink)
A True Z Fanatic
 
Join Date: Mar 2009
Location: Chicago
Posts: 3,653
Drives: 370
Rep Power: 944523
phunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond repute
Default

Quote:
Originally Posted by Japanjay View Post
Phunk you got a link for a DYI on locating and which wire exactly? Would I just splice in at the fuse box? Also I remember reading somewhere on here the fuse pulling method which I am assuming will accomplish the same as splicing and switching it throw all the dash lights on? And then I could have swore to turn them off you have to disconnect the power terminal and reconnect?
I dont, but I can help you with some information from the FSM.

Pulling the fuse is the easy way to do it, but I believe this will cause your brake lights to no longer work, which is not suitable for street or road course use.

Information from the Nissan FSM, copied and pasted (property of Nissan):

P1805 BRAKE SWITCH
Description: Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed. This signal is used mainly to decrease the engine speed when the vehicle is being driven.

DTC detecting condition
A brake switch signal is not sent to ECM for extremely
long time while the vehicle is being driven.

3. Check the continuity between stop lamp switch harness connector and ECM harness connector.
Stop lamp switch Connector E110 Terminal 2
ECM Connector M107 Terminal 122


Looking at the ECU Pinout I confirm that terminal 122 at the ECU is the stop lamp signal input. Looks like it is a pink wire.

Also reconfirming this is the Connector M107 layout from the FSM. I have attached an image of a screen shot I took of this connector.

So in summary; You have 3 large connectors at the ECU. Find the one that matches the attached image and pin 122 is the pink wire for brake signal input. If you disconnect this wire, you can brake boost without losing your brake lights. But if you leave it disconnected too long you will get DTC Code P1805. This is why you would rather put a switch inline here rather than just cut the wire... so you can open the circuit when you want to brake boost without interference by the ECM, and then reconnect the signal later so you do not get the code. An alternative could be to disable P1805 in the ECM if you have UpRev. Which I think I might go ahead and do now next time I am in my ECU... then I can just de-pin terminal 122 without cutting the wire... to this day my cars wiring is all un-cut minus my injector sub-harness... prefer to keep it that way personally.
Attached Images
File Type: gif 370zM107.gif (30.4 KB, 126 views)
__________________
Charles @ CJ Motorsports : Website | Facebook | Instagram | YouTube
Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

Last edited by phunk; 07-12-2014 at 06:21 PM.
phunk is offline   Reply With Quote
Old 05-26-2014, 03:16 PM   #11 (permalink)
Track Member
 
Join Date: Mar 2012
Location: Puyallup
Posts: 856
Drives: 09 Nissan 370z MB M6
Rep Power: 14
Japanjay is on a distinguished road
Default

Thank you, will be going this route and saved the whole comment in my build info file.
phunk likes this.
Japanjay is offline   Reply With Quote
Old 05-26-2014, 08:06 PM   #12 (permalink)
Base Member
 
Join Date: Jul 2013
Location: Texas
Posts: 143
Drives: 09 Nissan 370Z Base
Rep Power: 11
R3drckt09 is on a distinguished road
Default

So putting a switch on the purple wire turns off all electronic nannies, but a switch disconnecting the yaw sensor removed everything except ABS?
R3drckt09 is offline   Reply With Quote
Old 05-26-2014, 09:53 PM   #13 (permalink)
A True Z Fanatic
 
Join Date: Mar 2009
Location: Chicago
Posts: 3,653
Drives: 370
Rep Power: 944523
phunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond reputephunk has a reputation beyond repute
Default

The switch on the pink wire will only allow you to give throttle input while pressing the brakes. It should have no other known effects on the "nannies". At least, nothing is mentioned of it in the service manual description of the circuit's purpose. But perhaps it could have its own contribution to your freedoms when applied with other nanny-reduction techniques.
__________________
Charles @ CJ Motorsports : Website | Facebook | Instagram | YouTube
Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

Last edited by phunk; 07-12-2014 at 06:21 PM.
phunk is offline   Reply With Quote
Old 05-28-2014, 07:01 PM   #14 (permalink)
A True Z Fanatic
 
Jordo!'s Avatar
 
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 417
Jordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond repute
Default

BTW: Update on the brake/throttle limiter -- apparently that is NOT available at present for VHR engines as in the 370Z, confirmed by Megan370z (thanks again for checking on that! ).

So, for now, you need to follow the other methods if you want to do this.
esfourteen likes this.
__________________
Enjoy it. Destroy it.
Jordo! is offline   Reply With Quote
Old 07-12-2014, 05:21 PM   #15 (permalink)
A True Z Fanatic
 
esfourteen's Avatar
 
Join Date: Mar 2010
Location: LI, NY
Posts: 1,375
Drives: 40th TT
Rep Power: 18
esfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud of
Send a message via AIM to esfourteen
Default

I just did this myself and disabled the DTC P1805 code with uprev, so far no issues at all, brake + gas working as expected without ecu interruption. For anyone looking to do this, the wire color is actually Pink (P), not purple, its the last ecu connector furthest from the firewall. Be sure you cut the correct pink wire, the other pink wire is for the vehicle CAN.

Once you disconnect the plug and remove the pin cover you can trace the wire you want and cut or de-pin, I highlighted the wire here when looking from the back of the connector which is how the FSM picture phunk attached above shows it:

phunk, street2soul and JARblue like this.
esfourteen is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[FOR SALE] Part out: Oil cooler, brake cooling, sway bars, brake pads etc. JB1 Parts for sale (Private Classifieds) 36 05-05-2014 08:19 AM
NISMO Circular Brake Ducts Using Revotec Inlets & Stillen Brake Cooling Kit DLo Brakes & Suspension 24 09-17-2013 01:10 AM
Brake/Throttle Interlock disable - Left Foot Brake enable ///MSH Track / Autocross / Drifting / Dragstrip 1 08-15-2013 10:31 AM
Brake light on dash while boosting axio Engine & Drivetrain 17 05-24-2012 05:52 PM
clicking sound when pressing brake pedal = brake booster problem? doubleG370Z Brakes & Suspension 1 08-30-2010 06:49 PM


All times are GMT -5. The time now is 05:28 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2