Full throttle Electric Supercharger Build Thread - Page 306 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jebuwh · 04-14-2014, 01:16 AM

I sent a question thing on the phantom site but didn't get any response... What is pricing like on this? Can someone pm me? I already have oft for tuning as well.

Sojhinn · 04-14-2014, 01:57 AM

Quote:

Originally Posted by jebuwh

I sent a question thing on the phantom site but didn't get any response... What is pricing like on this? Can someone pm me? I already have oft for tuning as well.

Price and how to get in contact with rob are on the first post of this thread .

jebuwh · 04-14-2014, 02:07 AM

Quote:

Originally Posted by Sojhinn

Price and how to get in contact with rob are on the first post of this thread .

Wow I'm blind. Hahaha. I've been reading this thread for forever it feels like too. Thanks!

Jac · 04-14-2014, 09:01 AM

Managed to log a couple of pulls yesterday:
http://datazap.me/u/jac/brz-oft-phantom-sc-za1ja01c

Looks like AFR generally stays between 12-11 which I think is good. Is there anything else i should be monitoring/looking out for?

AFR will sometimes jump to 14/13 early in the pull, normal?
http://datazap.me/u/jac/brz-oft-phan...om=11915-12015

shif7i7down · 04-14-2014, 09:34 AM

Quote:

Originally Posted by Jac

Managed to log a couple of pulls yesterday:
http://datazap.me/u/jac/brz-oft-phantom-sc-za1ja01c

Looks like AFR generally stays between 12-11 which I think is good. Is there anything else i should be monitoring/looking out for?

AFR will sometimes jump to 14/13 early in the pull, normal?
http://datazap.me/u/jac/brz-oft-phan...om=11915-12015

Afr should get better once ltft stabilized. With that said, it's running a bit lean for my taste.

fenton · 04-14-2014, 10:35 AM

Quote:

Originally Posted by shif7i7down

Afr should get better once ltft stabilized. With that said, it's running a bit lean for my taste.

I wouldn't say it is lean at all. It is running rich enough to bottom out the sensor at 11.x for almost the entire rev range.

It is normal to see 13 to 14 at the extreme bottom end of the RPM range.

shif7i7down · 04-14-2014, 11:43 AM

Quote:

Originally Posted by fenton

I wouldn't say it is lean at all. It is running rich enough to bottom out the sensor at 11.x for almost the entire rev range.

It is normal to see 13 to 14 at the extreme bottom end of the RPM range.

The afr is rich yes. but it's because the tune is running lean and the stft is adding a boat load of fuel. His ltft is considerably lean at 3%, a good percentage to shoot for would be a bit below zero. Around -.7% Sounds good

Should be easily fixed with some maf scaling
*Which should allow for the best afr vs afr command possible.

HRTROB · 04-14-2014, 11:57 AM

Quote:

Originally Posted by shif7i7down

The afr is rich yes. but it's because the tune is running lean and the stft is adding a boat load of fuel. His ltft is considerably lean at 3%, a good percentage to shoot for would be -.78%

Should be easily fixed with some maf scaling
*Which should allow for the best afr vs afr command possible.

Doesn't LTFT and STFT only affect closed loop?

shif7i7down · 04-14-2014, 12:06 PM

Quote:

Originally Posted by HRTROB

Doesn't LTFT and STFT only affect closed loop?

Yes you are correct. Look at his log, it's mainly cruising data, which is why i said he's running lean, which is in closed loop as you've suspected. During closed loop, the o2 sensor is utilized to control fuel trim to achieve a theoretical afr of 14.7. which it will use to scale the stft which in turn modifies the ltft to adjust for incorrect maf scalling. But to answer your question, LTFT is used in both closed and open loop, So a better LTFT in closed loop from proper maf scaling will produce a better AFR : AFR command during WOT open loop.

WolfsFang · 04-14-2014, 01:06 PM

Has anyone done an autox with one of these installed?

Jac · 04-14-2014, 01:51 PM

What happens when I lift off throttle at say 5-6K RPM and my intake butterfly closes? I don't see a recirc/bov on the compressor, does it need one?

fenton · 04-14-2014, 01:55 PM

Quote:

Originally Posted by Jac

What happens when I lift off throttle at say 5-6K RPM and my intake butterfly closes? I don't see a recirc/bov value on the compressor, does it need one?

Not much honestly. There isn't that much boost that that rpm. The extra pressure will surge past the compressor when throttle closes.

This is completely safe at this boost pressure.

Sent from my HTC One using Tapatalk

Jac · 04-14-2014, 02:16 PM

Quote:

Originally Posted by fenton

Not much honestly. There isn't that much boost that that rpm. The extra pressure will surge past the compressor when throttle closes.

This is completely safe at this boost pressure.

Sent from my HTC One using Tapatalk

Will that surge eventually wear it out? 4 PSI flowing back into the compressor doesn't sound like a good thing.

fenton · 04-14-2014, 02:19 PM

Quote:

Originally Posted by Jac

Will that surge eventually wear it out? 4 PSI flowing back into the compressor doesn't sound like a good thing.

No it won't hurt this compressor to my knowledge.

I know that Rob has tested this extensively.
@Robftss do you want to comment on this?

Sent from my HTC One using Tapatalk

04-14-2014, 01:06 PM	#4280
WolfsFang Scrape Master Join Date: Jun 2012 Drives: Goal: Oldest FRS State Side Location: North NJ Posts: 1,161 Thanks: 238 Thanked 412 Times in 238 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Has anyone done an autox with one of these installed? __________________ You do realize comparing the BRZ to the FR-S is like comparing which hand you love masterbating too right?

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04-14-2014, 01:16 AM	#4271
jebuwh Village Idiot Join Date: Oct 2013 Drives: '13 FR-S Ultramarine Manual Location: Irvine Posts: 402 Thanks: 230 Thanked 222 Times in 111 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	I sent a question thing on the phantom site but didn't get any response... What is pricing like on this? Can someone pm me? I already have oft for tuning as well.

04-14-2014, 09:01 AM	#4274
Jac Senior Member Join Date: Jun 2013 Drives: Fiat Abarth Location: Los Angeles, California Posts: 204 Thanks: 23 Thanked 96 Times in 45 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Managed to log a couple of pulls yesterday: http://datazap.me/u/jac/brz-oft-phantom-sc-za1ja01c Looks like AFR generally stays between 12-11 which I think is good. Is there anything else i should be monitoring/looking out for? AFR will sometimes jump to 14/13 early in the pull, normal? http://datazap.me/u/jac/brz-oft-phan...om=11915-12015

04-14-2014, 01:51 PM	#4281
Jac Senior Member Join Date: Jun 2013 Drives: Fiat Abarth Location: Los Angeles, California Posts: 204 Thanks: 23 Thanked 96 Times in 45 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	What happens when I lift off throttle at say 5-6K RPM and my intake butterfly closes? I don't see a recirc/bov on the compressor, does it need one?

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