Homepage Garage Wiki Register Social Groups Calendar Search Today's Posts Mark Forums Read
#Camaro6
Go Back   CAMARO6 > Engine | Drivetrain | Powertrain Technical Discussions > Tuning / Diagnostics


Phastek Performance


Post Reply
 
Thread Tools
Old 04-17-2019, 07:58 PM   #1
RCF
 
Drives: '17 2SS, NGM, MRC, DPP; '19 F150
Join Date: Apr 2017
Location: Katy (Houston), TX
Posts: 440
MAF readings on stock SS...

So I have a qestion, if anyone can help me out and satisfy my curiosity, I’d really appreciate it!

I’ve seen a few different MAF tables (freq vs airflow). I’m curious if anyone has logged a stock SS and, if so, what’s the highest MAF reading you’ve seen?

The stock table shows a huge jump on the last reading(8550 to 15000 hertz), so I assume a stock SS is gonna be somewhere below 8550 hertz (2855lb/hr) to be in the relevant part of the table.
__________________
2017 Camaro 2SS, Nightfall Grey Metallic, Magride, NPP exhaust, VS Forged VS12s in brushed clear coat (20x9 front, 20x10 rear), Michelin PS4’s (255/40 front, 285/35 rear)
RCF is offline   Reply With Quote
Old 05-08-2019, 02:09 AM   #2
Asskicker
 
Drives: 17 camaro ss 1le
Join Date: Apr 2017
Location: Miami
Posts: 9
I had 2540 lb/hr @ 6330 on one of my dyno pull log
I like your curiosity
Asskicker is offline   Reply With Quote
Old 05-19-2019, 08:44 AM   #3
RCF
 
Drives: '17 2SS, NGM, MRC, DPP; '19 F150
Join Date: Apr 2017
Location: Katy (Houston), TX
Posts: 440
You’re completely stock? No CAI, ported parts, etc? Any idea on the conditions when you did that?

Thanks!
__________________
2017 Camaro 2SS, Nightfall Grey Metallic, Magride, NPP exhaust, VS Forged VS12s in brushed clear coat (20x9 front, 20x10 rear), Michelin PS4’s (255/40 front, 285/35 rear)
RCF is offline   Reply With Quote
Old 06-06-2019, 09:27 PM   #4
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Quote:
Originally Posted by RCF View Post
You’re completely stock? No CAI, ported parts, etc? Any idea on the conditions when you did that?

Thanks!
I just checked mine I'm at 2520lbs/hr at 6330rpms. I've got a pray intake/tb, rotofab, running e73. I also just analyzed two logs one with the stock airbox with rotofab tube, and one with the rotofab. Exporting both logs to excel and running a pivot table, I see 37.75 lbs/min average at WOT
with the rotofab and 36.9 lbs/min with the stock airbox. Average IATs were up a few degrees with the rotofab though. I may try running some more tests trying immediately removing the airbox to get more consistent data.
cmitchell17 is offline   Reply With Quote
Old 06-11-2019, 10:06 PM   #5
Trochoidal

 
Drives: 2017 Camaro 2SS A8
Join Date: May 2019
Location: USA
Posts: 1,656
Just checked a log and mine was 2,662 @ 6256 RPM. This was with stock TB and stock CAI.
Trochoidal is offline   Reply With Quote
Old 06-12-2019, 06:07 PM   #6
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Quote:
Originally Posted by Trochoidal View Post
Just checked a log and mine was 2,662 @ 6256 RPM. This was with stock TB and stock CAI.
What's your ambient temperature, IAT, and elevation?
cmitchell17 is offline   Reply With Quote
Old 06-12-2019, 10:58 PM   #7
Trochoidal

 
Drives: 2017 Camaro 2SS A8
Join Date: May 2019
Location: USA
Posts: 1,656
Quote:
What's your ambient temperature, IAT, and elevation?
Ambient was 99°
IAT was also 99°
Elevation was 138 feet

I remember this day because I sat in the parking lot with AC on while I added a few channels to log. The start of the log had ambient at 102° and IAT was 108°.
Trochoidal is offline   Reply With Quote
Old 06-17-2019, 08:53 PM   #8
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Quote:
Originally Posted by Trochoidal View Post
Ambient was 99°
IAT was also 99°
Elevation was 138 feet

I remember this day because I sat in the parking lot with AC on while I added a few channels to log. The start of the log had ambient at 102° and IAT was 108°.
I used to be that low of elevation now I'm at almost 1000, so im seeing about 14.4-14.5 baro pressure instead of 14.7.
cmitchell17 is offline   Reply With Quote
Old 06-19-2019, 10:56 AM   #9
JANNETTYRACING

 
JANNETTYRACING's Avatar
 
Drives: BLUE CAMARO ZL1 1LE M6
Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,218
All of this discussion goes out the window unless the MAF has been properly calibrated so the Final Lambda/AFR matches the Commanded Lambda/AFR.

Ted.
__________________
www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705
email tedj@jannettyracing.com
JANNETTYRACING is offline   Reply With Quote
Old 07-24-2020, 07:51 AM   #10
pavetim
 
Drives: firebird
Join Date: Jan 2010
Location: valdosta, georgia
Posts: 155
I hear talk about scaling your MAF what does that mean and how do you do it? The way i read it is you see what your actual physical maf readings are then change the table to match them?
pavetim is offline   Reply With Quote
Old 07-24-2020, 08:13 PM   #11
cmitchell17

 
Drives: 17 2SS, 8L90, Cam, Heads, E85
Join Date: Dec 2016
Location: US
Posts: 1,196
Quote:
Originally Posted by JANNETTYRACING View Post
All of this discussion goes out the window unless the MAF has been properly calibrated so the Final Lambda/AFR matches the Commanded Lambda/AFR.

Ted.
Not to say that it dosent matter that the MAF is calibrated, but given that a lot of the engines are somewhat stock why isn't the stock MAF calibration still good, given that its tuned by GM with multi million dollar equipment and given that someone who recalibrates their MAF uses a 200 dollar wideband with no calibration traceability and tunes it on some random dyno somewhere.

I'm just trying to understand how the source of error of receiving wideband feedback and trying to interpret airmass after it has gone through the engine and undergone combustion and all that? I mean I get it if someone hacks up their airbox with the MAF sensor location moved, but for stock MAF setups?
cmitchell17 is offline   Reply With Quote
Old 07-28-2020, 03:14 PM   #12
pavetim
 
Drives: firebird
Join Date: Jan 2010
Location: valdosta, georgia
Posts: 155
What do you log the maf against? Hertz in one column on map but whats the other row
And anybody know how to create a pid for Eq error? Is it wideband lambda divided by commanded lambda?
pavetim is offline   Reply With Quote
Old 07-28-2020, 05:29 PM   #13
KingLT1


 
KingLT1's Avatar
 
Drives: 2016 1SS NFG A8
Join Date: Aug 2017
Location: 46804
Posts: 6,764
You log the maf against a wideband.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP
Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP
Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA
KingLT1 is offline   Reply With Quote
Old 07-28-2020, 08:05 PM   #14
pavetim
 
Drives: firebird
Join Date: Jan 2010
Location: valdosta, georgia
Posts: 155
Thats what confuses me cause other maps there is a x axis, a y a is and then the data cells. But the maf all the ones i see have Hz on the x axis and the data is afr or lambda error but what is in the y axis, nothing?
pavetim is offline   Reply With Quote
 
Post Reply

Thread Tools

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


All times are GMT -5. The time now is 04:23 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.