follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
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 > Forced Induction

Forced Induction Turbo, Supercharger, Methanol, Nitrous


User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-09-2017, 09:19 PM   #1
Markwearsprada
Junior Member
 
Join Date: Jun 2017
Drives: 2013 10 Series Scion Frs
Location: Houston
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Question About OFT tune and Boost controller

Hey guys I am new to the forums here. I've been owning an Fr-s for a year now and will soon be turbocharging it with sbd kit using the oft. However, I was wondering if I turn up the boost from the base (10 psi) to let's say 14psi, will I need a retune? I will install turbo kit in about a month from now. I asked shiv but obviously he's a busy man and all. Thanks in advance for help
Markwearsprada is offline   Reply With Quote
Old 06-09-2017, 10:10 PM   #2
Amputechture
Senior Member
 
Join Date: Aug 2015
Drives: 2014 BRZ
Location: FL
Posts: 424
Thanks: 49
Thanked 143 Times in 111 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Yes, a fourty percent increase in boost pressure will require a re-tune...
Amputechture is offline   Reply With Quote
Old 06-09-2017, 11:21 PM   #3
Jrdad
Senior Member
 
Jrdad's Avatar
 
Join Date: May 2013
Drives: 2013 Scion FR-S 6M Argento
Location: Gta, Ontario
Posts: 162
Thanks: 47
Thanked 59 Times in 38 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Garage
Word of caution:

The oft requires a manual boost controller and cannot use an ebcs. Someone in the Facebook group blew up his car using a mbc with an oft as it made the turbo spool quicker and it was too much torque to low in the rpms
Jrdad is offline   Reply With Quote
Old 06-10-2017, 12:18 AM   #4
Jaden
Road-hole
 
Join Date: Jul 2014
Drives: 2013 Whiteout FR-S
Location: Gilbert, Arizona
Posts: 1,112
Thanks: 272
Thanked 479 Times in 292 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
sounds like somone...

Quote:
Originally Posted by Jrdad View Post
Word of caution:

The oft requires a manual boost controller and cannot use an ebcs. Someone in the Facebook group blew up his car using a mbc with an oft as it made the turbo spool quicker and it was too much torque to low in the rpms
Sounds like someone is blowing smoke. There is nothing about a manual boost controller that will cause a turbo to spool quicker than any other type of boost controller.

It can cause it to overboost though...

Jaden
Jaden is offline   Reply With Quote
Old 06-10-2017, 12:30 AM   #5
Jrdad
Senior Member
 
Jrdad's Avatar
 
Join Date: May 2013
Drives: 2013 Scion FR-S 6M Argento
Location: Gta, Ontario
Posts: 162
Thanks: 47
Thanked 59 Times in 38 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Jaden View Post
Sounds like someone is blowing smoke. There is nothing about a manual boost controller that will cause a turbo to spool quicker than any other type of boost controller.

It can cause it to overboost though...

Jaden
That is possible. I was told they could ramp the boost in with a ebcs so you weren't making too much power to low in the revs.
Jrdad is offline   Reply With Quote
Old 06-10-2017, 12:36 AM   #6
Jaden
Road-hole
 
Join Date: Jul 2014
Drives: 2013 Whiteout FR-S
Location: Gilbert, Arizona
Posts: 1,112
Thanks: 272
Thanked 479 Times in 292 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
yes

Quote:
Originally Posted by Jrdad View Post
That is possible. I was told they could ramp the boost in with a ebcs so you weren't making too much power to low in the revs.
You can limit boost with an ebcs, but it isn't likely to be building too much boost too early unless you're using a tiny turbo. Typically they're limiting boost by gear but that's in the upper rpms in lower gears like 1 and 2.

You're not likely to be making too much boost in the lower rpms with most setups.

Jaden

p.s. also remember that an ebcs (or any boost controller for that matter), can only limit boost to the spring pressure or raise it. I'm not aware of any that can lower it below waste gate spring pressure.
Jaden is offline   Reply With Quote
Old 06-10-2017, 12:43 AM   #7
Jrdad
Senior Member
 
Jrdad's Avatar
 
Join Date: May 2013
Drives: 2013 Scion FR-S 6M Argento
Location: Gta, Ontario
Posts: 162
Thanks: 47
Thanked 59 Times in 38 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Jaden View Post
You can limit boost with an ebcs, but it isn't likely to be building too much boost too early unless you're using a tiny turbo. Typically they're limiting boost by gear but that's in the upper rpms in lower gears like 1 and 2.

You're not likely to be making too much boost in the lower rpms with most setups.

Jaden

p.s. also remember that an ebcs (or any boost controller for that matter), can only limit boost to the spring pressure or raise it. I'm not aware of any that can lower it below waste gate spring pressure.
The kit uses a 20g turbo, so it isn't that big. But the tuner could have been just trying to shit on oft and sell a tune.

You're definitely correct about the spring pressure. If you were to try to run a lower pressure with a lower psi than spring is good for, it would be the same as not having the boost controller.
Jrdad is offline   Reply With Quote
Old 06-11-2017, 03:21 AM   #8
Markwearsprada
Junior Member
 
Join Date: Jun 2017
Drives: 2013 10 Series Scion Frs
Location: Houston
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
So am i safe to use a Manual or electronic boost controller with oft?
Markwearsprada is offline   Reply With Quote
Old 06-12-2017, 01:41 AM   #9
myioz86
Member
 
Join Date: May 2014
Drives: gt-86 2013
Location: cairns qld australia
Posts: 71
Thanks: 0
Thanked 24 Times in 18 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Yes you are safe with a mbc . i am using one with shiv,s tune 13psi flexfuel and mbc on there 20g turbo 8psi at 3500rmp 12psi at 4500
myioz86 is offline   Reply With Quote
Old 06-12-2017, 12:38 PM   #10
Jaden
Road-hole
 
Join Date: Jul 2014
Drives: 2013 Whiteout FR-S
Location: Gilbert, Arizona
Posts: 1,112
Thanks: 272
Thanked 479 Times in 292 Posts
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
There's nothing stopping you from using an EBCS.

Quote:
Originally Posted by Markwearsprada View Post
So am i safe to use a Manual or electronic boost controller with oft?

You absolutely can use an ebcs with OFT, you just can't control it with OFT. It basically becomes a manual boost controller with an electronic knob or a circuit that you build or have built.

At least if you do it that way, if OFT develops the ability to program for an EBCS or you switch to ECUTEK, you don't have to worry about replacing hardware.

Jaden
Jaden is offline   Reply With Quote
Old 09-17-2019, 09:57 PM   #11
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)
Quote:
Originally Posted by Jaden View Post
Sounds like someone is blowing smoke. There is nothing about a manual boost controller that will cause a turbo to spool quicker than any other type of boost controller.

It can cause it to overboost though...

Jaden
Yes, a manual boost controller can spool faster, spring and ball type make a significant difference if used on a single port internal waste gate. Waste gates are not an on off device, they creep open which slows the response. The ball and spring keeps boost pressure away until it blows open and lets the boost hit the gate. This makes the gate closer to off on.
solidsnake11 is offline   Reply With Quote
 
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
Quick question about installing electronic boost controller SkAsphalt Forced Induction 17 05-19-2016 01:01 AM
Boost controller help nickmerronesucks Forced Induction 3 04-05-2016 01:26 PM
Digital boost gauge w/ vent pod grim speed boost controller Meetjoeblack Engine, Exhaust, Bolt-Ons 0 03-09-2015 01:27 PM
Turbos/boost controller Anthony7515 Engine, Exhaust, Bolt-Ons 2 11-20-2014 03:48 PM
Turbosmart E-boost controller Fl4t fun Engine, Exhaust, Bolt-Ons 0 01-29-2014 11:29 PM


All times are GMT -4. The time now is 07:30 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.