follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Software Tuning

Software Tuning Discuss all software tuning topics.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-21-2019, 03:08 PM   #1
solidsnake11
Senior Member
 
Join Date: Nov 2018
Drives: brz
Location: nc
Posts: 318
Thanks: 431
Thanked 739 Times in 443 Posts
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Port injection only possible?

c

Last edited by solidsnake11; 11-22-2020 at 04:18 PM.
solidsnake11 is offline   Reply With Quote
Old 12-21-2019, 03:10 PM   #2
Clutch Dog
Senior Member
 
Join Date: Jan 2019
Drives: 2017 BRZ PP , 2005 Saab 97X
Location: CA
Posts: 1,052
Thanks: 754
Thanked 721 Times in 405 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Short answer: *snaps finger* Yes

Long answer: would require a complete retune on the ECU, i could see this if you went custom turbo and decided for simplicity to run the port injection and not DFI, make some plugs, throw on bigger injectors and send.
Clutch Dog is offline   Reply With Quote
The Following User Says Thank You to Clutch Dog For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-21-2019, 03:22 PM   #3
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Put 100% in every cell on the 3 tables of PI/DI ratio and you have only PI working

May I ask why?
tomm.brz is offline   Reply With Quote
The Following User Says Thank You to tomm.brz For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-21-2019, 05:15 PM   #4
kev0
Senior Member
 
Join Date: Feb 2018
Drives: '14
Location: Midwest
Posts: 485
Thanks: 246
Thanked 99 Times in 76 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Clutch Dog View Post
Short answer: *snaps finger* Yes

Long answer: would require a complete retune on the ECU, i could see this if you went custom turbo and decided for simplicity to run the port injection and not DFI, make some plugs, throw on bigger injectors and send.
Are there any downsides to running PI 100% of the time?
kev0 is offline   Reply With Quote
The Following User Says Thank You to kev0 For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-21-2019, 05:43 PM   #5
steve99
Banned
 
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,998
Thanks: 1,035
Thanked 4,987 Times in 2,981 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by kev0 View Post
Are there any downsides to running PI 100% of the time?

Yes id be reasnobly sure the DI injectors would get damaged likely due heat if you turn them off using the pi\di tables in tune. In standard tunes your always running fuel through the DI system and i suspect without that the di injectors in the compustion chamber will get damaged without the fuel to cool them.


The stock port injectors are quite small 228 cc and dont have the capacity to run even an NA engine at high rpm full load without di., So you would need bigger ports even on NA car to run without DI.


So id say dont try to run full port unless your prepared to toast a set of DI injectors
steve99 is offline   Reply With Quote
The Following User Says Thank You to steve99 For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-21-2019, 05:49 PM   #6
steve99
Banned
 
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,998
Thanks: 1,035
Thanked 4,987 Times in 2,981 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
If your talking about completly removing the DI system ie the DI computer on side of engine and DI pump, thats going to introduce a bunch of other issues with ghe ecu not seeing those monitors componemts, its likey going to go into limp mode or at least get very confused. To remove that stuff your likely going to need to re write ecu code, i suspect simply disabling dtc codes wont work even if all the codes defined .
steve99 is offline   Reply With Quote
The Following 2 Users Say Thank You to steve99 For This Useful Post:
Clutch Dog (12-22-2019), solidsnake11 (12-21-2019)
Old 12-21-2019, 06:31 PM   #7
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Never tried, but with ecutek you also have "fuel quantity DI" and "Fuel quantity PI" as available custom inputs so you have the possibility to control those with a multiplier for example

About using low pressure PFI injector with the GDI wiring.. No idea, the GDI scaling and gestion is extremely complicated, since it works with the variable high pressure
tomm.brz is offline   Reply With Quote
The Following User Says Thank You to tomm.brz For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-21-2019, 06:59 PM   #8
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by solidsnake11 View Post
Papadakis Racing melted the end off a direct injector on the supra.
yes well he was also trying to put out 1000hp with 40 psi

i did a release in my car with 100% PFI to calibrate it to the GDI and did a pull and nothing bad happened
tomm.brz is offline   Reply With Quote
The Following User Says Thank You to tomm.brz For This Useful Post:
solidsnake11 (12-21-2019)
Old 12-22-2019, 12:38 AM   #9
Clutch Dog
Senior Member
 
Join Date: Jan 2019
Drives: 2017 BRZ PP , 2005 Saab 97X
Location: CA
Posts: 1,052
Thanks: 754
Thanked 721 Times in 405 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
nothing happened that one time. but all it takes is for the DFI injectors to overheat the tips and bam zoom new motor.

this is one of those things you do it right, or do it twice
Clutch Dog is offline   Reply With Quote
The Following User Says Thank You to Clutch Dog For This Useful Post:
tomm.brz (12-22-2019)
Old 12-23-2019, 02:51 PM   #10
ka-t_240
Senior Member
 
Join Date: May 2014
Drives: BRZ
Location: Fargo, ND
Posts: 968
Thanks: 124
Thanked 327 Times in 236 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by solidsnake11 View Post
Papadakis didn't hurt anything, it just blew molten steel out the turbo.


In case you missed the reasoning for me to cut off direct injection. I am going to replace my engine with a k24 honda inline 4 and I am going to retrofit the fa20 fuel injection on to it.
Are you going to try and run a Honda K24 completely using FA20 engine harness/ECU?

If you are not going to control the k24 via a FA20 ecu, then there is no issue to worry about here.
ka-t_240 is offline   Reply With Quote
The Following User Says Thank You to ka-t_240 For This Useful Post:
solidsnake11 (12-23-2019)
Old 12-23-2019, 03:36 PM   #11
Clutch Dog
Senior Member
 
Join Date: Jan 2019
Drives: 2017 BRZ PP , 2005 Saab 97X
Location: CA
Posts: 1,052
Thanks: 754
Thanked 721 Times in 405 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by solidsnake11 View Post
Yes I am going to try
does the firing order match? or are you wanting to change the plugs out for whatever fires on what.

fuel rail can be whatever, but id be looking into how the engine sees itself with cam angle sensor and throttle position..

an interesting proposition.
if there was a good K24 swap kit, and you did all the hard work you could snuff out the S14 craze these days with the k24..

hell id put one ine..

currently trying to get funds for a rx8 swap ren into an brz
Clutch Dog is offline   Reply With Quote
The Following User Says Thank You to Clutch Dog For This Useful Post:
solidsnake11 (12-23-2019)
Old 12-23-2019, 06:53 PM   #12
tomm.brz
Senior Member
 
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,183
Thanks: 499
Thanked 1,059 Times in 769 Posts
Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by solidsnake11 View Post
I'm using A01C RR.
frsport has not sent me my ecutek?

So things I have learned.

The fuel pressure sensor has to be hooked up(no start). It reads around 52psi with out the fuel pump solinoid plugged in. Hey who doesn't love to know their fuel pressure.

I can get it to run without codes.
.
My engine is still running on direct at idle?
Anywhere above idle is port inj ?
I may have to run 8 injectors. The intake that pure uses has provisions for 8.

Things are looking promising.
what i know for sure, and think you xan t change, is: car start 50% PI 50% DI
then goes after a few to 100% PI
then goes to what ratio table is

maybe forcing 100% PI with custom maps work but can't tell you
tomm.brz is offline   Reply With Quote
The Following User Says Thank You to tomm.brz For This Useful Post:
solidsnake11 (12-23-2019)
Old 12-24-2019, 11:40 AM   #13
sato
Senior Member
 
sato's Avatar
 
Join Date: May 2013
Drives: Dodge Patitas
Location: Puerto Rico
Posts: 973
Thanks: 1,823
Thanked 371 Times in 265 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by solidsnake11 View Post
Papadakis didn't hurt anything, it just blew molten steel out the turbo.
If I remember correctly, they just removed the direct injectors and plugged them holes with a solid piece of metal.

Anyway, good luck with your build. Loving your experiments!

Last edited by sato; 12-24-2019 at 11:43 AM. Reason: Oops while quoting
sato is offline   Reply With Quote
Old 01-03-2020, 07:30 PM   #14
Ultramaroon
義理チョコ
 
Ultramaroon's Avatar
 
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 31,825
Thanks: 52,063
Thanked 36,469 Times in 18,894 Posts
Mentioned: 1106 Post(s)
Tagged: 9 Thread(s)
Quote:
Originally Posted by solidsnake11 View Post
K24 head gasket
That's all you really need.
__________________
Ultramaroon is offline   Reply With Quote
The Following User Says Thank You to Ultramaroon For This Useful Post:
solidsnake11 (01-03-2020)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Direct injection/port injection explained? mike the snake Software Tuning 31 06-06-2021 06:17 PM
Is Port Injection more important when boosted? KoolBRZ Software Tuning 24 03-17-2016 03:25 AM
Best e85 oil/ meth injection Fastbrz Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) 2 10-26-2014 03:28 PM
ever seen fuel injection like this? carbonBLUE Other Vehicles & General Automotive Discussions 1 10-17-2012 02:17 AM


All times are GMT -4. The time now is 09:42 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.