What is good boost for the FA20 now? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Exhaust · 11-28-2015, 08:19 PM

I am really out of the loop with the current FI scene for the twins. How much boost are people running on the stock engine safely now? Also, what is the Automatic transmission rated at boosted?

Thanks,

GsxrMe · 11-28-2015, 08:31 PM

I'm personally not going to play with fire. I'm keeping my GTX30 @ 7PSI until my motor build is done.

Others are pushing well over 400rwhp on stock and haven't had a problem.

go_a_way1 · 11-28-2015, 08:42 PM

Quote:

Originally Posted by Exhaust

I am really out of the loop with the current FI scene for the twins. How much boost are people running on the stock engine safely now? Also, what is the Automatic transmission rated at boosted?

Thanks,

It really depends still. Btw trannys should be rated in foot pounds of torque not boost haha!

Northwest86 · 11-28-2015, 08:44 PM

7-10ish is the safe zone. Where you have a 95% chance of being all good maintaining the fact that the car is maintained well and the tuner has any idea on what he's doing. After that you are getting into dyno queen/highway pull kind of power. 250-300kw is the point where if you are racing/tracking/driving hard alot, you will start to have problems frequently. It depends on your tuner for base reliability then driving habits. Basically if you can get the power on a stock fuel system, it's pretty reliable. (which is about 180kw or 220-230 on the higher reading dynos)

BostonDave91 · 12-01-2015, 12:31 AM

I plan to use my car as a daily driver and visit the drag strip a few times a month. I'm thinking a borg warner EFR 7670 from what I hear it's good for 400+ hp. I'm not even going to mess around and I'll put a new clutch in at the sametime. Any thought on this would be great...

Northwest86 · 12-01-2015, 05:13 AM

You will need a new clutch for sure. For a daily driver I'd say 7-9 psi is safe. Assuming that your tuner is good. More is easily feasible but at that point with the wrong tuner it can go at any time. Yeah that turbo will easily do what you want. Turbo selection is complex and a very experienced tuner on the 86 platform can really help with that.

FRS Johnny · 12-01-2015, 11:58 PM

what boost controller are my turbo friends running? And how do you guys set it up?

Mild2Wild · 12-02-2015, 12:21 AM

Quote:

Originally Posted by BostonDave91

I plan to use my car as a daily driver and visit the drag strip a few times a month. I'm thinking a borg warner EFR 7670 from what I hear it's good for 400+ hp. I'm not even going to mess around and I'll put a new clutch in at the sametime. Any thought on this would be great...

If you visit the drag strip more than a couple times without your entire drivetrain hating you I will be surprised. It's not just the clutch you'll be putting incredible pressure on; with 400+hp (and the accompanying torque) launches at the drag strip axles will break quickly and your transmission will probably fail soon, too.

hmong337 · 12-02-2015, 12:30 AM

1 million psi

mrk1 · 12-02-2015, 09:00 AM

Quote:

Originally Posted by FRS Johnny

what boost controller are my turbo friends running? And how do you guys set it up?

I'm running a TurboSmart eBoost2, it's separate from the ecutek tune so I can easily adjust on the fly. If you only want a hi and low boost setting that can be done with just a boost solenoid wired into ecutek.

BostonDave91 · 12-02-2015, 12:02 PM

Id like to have between 325 and 350whp. What Axles are people running on there cars. When you say transmission in think automatic. Do you mean my rear end and gears will blow up? Yes im a noob sorry for the stupid questions.

Toyota86.ir · 12-02-2015, 12:11 PM

After reading forum posts it seems max 9psi is safe but it depends to tune.
Be careful about remote tuning (boost).

Northwest86 · 12-03-2015, 05:23 AM

Running wastegate at this time as there were none of the boost controllers I wanted in the country. But I will be running a Plex PBC

coyote · 12-03-2015, 02:55 PM

I bought all Plex's PBC Pros last month. They will have new stock in late January.

Sent from my Nexus 6 using Tapatalk

11-28-2015, 08:31 PM	#2
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	I'm personally not going to play with fire. I'm keeping my GTX30 @ 7PSI until my motor build is done. Others are pushing well over 400rwhp on stock and haven't had a problem. __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe

12-01-2015, 11:58 PM	#7
FRS Johnny Senior Member Join Date: Feb 2013 Drives: 2013 FR-S Whiteout MT Location: Orange County CA Posts: 535 Thanks: 102 Thanked 79 Times in 67 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	what boost controller are my turbo friends running? And how do you guys set it up? __________________ When in doubt, throttle out!

12-02-2015, 12:30 AM	#9
hmong337 Emperor JDM Join Date: Jun 2013 Drives: '91 MR2 Gen3 3SGTE, '13 FRS Location: Onterrible, Canada Posts: 1,750 Thanks: 3,498 Thanked 909 Times in 495 Posts Mentioned: 20 Post(s) Tagged: 3 Thread(s)	1 million psi __________________

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11-28-2015, 08:44 PM	#4
Northwest86 Senior Member Join Date: Oct 2015 Drives: Velocity Orange 86 GT Location: Australia Posts: 196 Thanks: 0 Thanked 71 Times in 55 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	7-10ish is the safe zone. Where you have a 95% chance of being all good maintaining the fact that the car is maintained well and the tuner has any idea on what he's doing. After that you are getting into dyno queen/highway pull kind of power. 250-300kw is the point where if you are racing/tracking/driving hard alot, you will start to have problems frequently. It depends on your tuner for base reliability then driving habits. Basically if you can get the power on a stock fuel system, it's pretty reliable. (which is about 180kw or 220-230 on the higher reading dynos)

12-01-2015, 12:31 AM	#5
BostonDave91 Member Join Date: Nov 2015 Drives: 2016 frs Location: Austin Posts: 12 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I plan to use my car as a daily driver and visit the drag strip a few times a month. I'm thinking a borg warner EFR 7670 from what I hear it's good for 400+ hp. I'm not even going to mess around and I'll put a new clutch in at the sametime. Any thought on this would be great...

12-01-2015, 05:13 AM	#6
Northwest86 Senior Member Join Date: Oct 2015 Drives: Velocity Orange 86 GT Location: Australia Posts: 196 Thanks: 0 Thanked 71 Times in 55 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	You will need a new clutch for sure. For a daily driver I'd say 7-9 psi is safe. Assuming that your tuner is good. More is easily feasible but at that point with the wrong tuner it can go at any time. Yeah that turbo will easily do what you want. Turbo selection is complex and a very experienced tuner on the 86 platform can really help with that.

12-02-2015, 12:02 PM	#11
BostonDave91 Member Join Date: Nov 2015 Drives: 2016 frs Location: Austin Posts: 12 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Id like to have between 325 and 350whp. What Axles are people running on there cars. When you say transmission in think automatic. Do you mean my rear end and gears will blow up? Yes im a noob sorry for the stupid questions.

12-02-2015, 12:11 PM	#12
Toyota86.ir Mike Tune HKS E85 FD 4.88 Join Date: Jan 2015 Drives: Toyota GT86 AT NA Stage 2 Location: Tehran Posts: 172 Thanks: 213 Thanked 35 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	After reading forum posts it seems max 9psi is safe but it depends to tune. Be careful about remote tuning (boost).

12-03-2015, 05:23 AM	#13
Northwest86 Senior Member Join Date: Oct 2015 Drives: Velocity Orange 86 GT Location: Australia Posts: 196 Thanks: 0 Thanked 71 Times in 55 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Running wastegate at this time as there were none of the boost controllers I wanted in the country. But I will be running a Plex PBC

12-03-2015, 02:55 PM	#14
coyote Senior Member Join Date: Oct 2011 Drives: Slowly Location: brisbane.qld.au Posts: 1,064 Thanks: 212 Thanked 539 Times in 235 Posts Mentioned: 21 Post(s) Tagged: 1 Thread(s)	I bought all Plex's PBC Pros last month. They will have new stock in late January. Sent from my Nexus 6 using Tapatalk

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