Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Tower Decals
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Tuning / Diagnostics -- engine and transmission

Tuning / Diagnostics -- engine and transmission Tune and diagnostics for engines and auto transmission.

Reply
 
Thread Tools
Old 11-14-2009, 01:40 PM   #1
general23cmp
 
Drives: 2010 RS SS
Join Date: Aug 2009
Location: Huntsville, AL
Posts: 196
changing injectors, how does my dash display calculate fuel economy

I'm going to be changing fuel injectors soon (and the computer's parameters accordingly). I was just wondering how the fuel economy display on my dash calculates its value. Will it be forever wrong after the swap, or will it use the new injector parameters in the ECU?
general23cmp is offline   Reply With Quote
Old 11-15-2009, 11:26 AM   #2
camaro1

 
camaro1's Avatar
 
Drives: 550+RWHP 2010 camaro
Join Date: Sep 2007
Location: wisconsin
Posts: 1,588
not sure if just the inj size/scaling tables will effect the cluster mileage calculation,, i do know that after i tuned my VE table the fuel mileage is no longer even close in the cluster
__________________
415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller
camaro1 is offline   Reply With Quote
Old 11-15-2009, 12:10 PM   #3
general23cmp
 
Drives: 2010 RS SS
Join Date: Aug 2009
Location: Huntsville, AL
Posts: 196
Yep....some folks are reporting huge MPG gains when doing forced induction and such, but I fear they are relying on their cluster.
general23cmp is offline   Reply With Quote
Old 11-15-2009, 12:18 PM   #4
axis
Search Ninja
 
axis's Avatar
 
Drives: 2010 Black 2SS/RS A6
Join Date: Oct 2009
Location: Central Ark
Posts: 7,183
Quote:
Originally Posted by general23cmp View Post
Yep....some folks are reporting huge MPG gains when doing forced induction and such, but I fear they are relying on their cluster.
It's impossible to get HUGE MPG increases, especially when going FI. The best you can hope for is the same or maybe a tad more from a better tune. Obviously, this is footpedal dependent as your MPG will DROP MASSIVELY when you spool it up. I could damn near watch my gas gauge drop when I was racing my 500whp turbo talon, yet got 26mpg cruising down the highway. That's about what they get in stock form.
axis is offline   Reply With Quote
Old 11-21-2009, 02:07 PM   #5
Matt TuneTime

 
Drives: 2008 G8 gt / 2010 Camaro L99
Join Date: Oct 2008
Location: Lakewood
Posts: 198
Quote:
Originally Posted by general23cmp View Post
I'm going to be changing fuel injectors soon (and the computer's parameters accordingly). I was just wondering how the fuel economy display on my dash calculates its value. Will it be forever wrong after the swap, or will it use the new injector parameters in the ECU?
This is all base on all of the injector flow data . Make sure it's correct .
Matt TuneTime is offline   Reply With Quote
Old 11-23-2009, 08:49 AM   #6
Steve@Vectormotorsports
 
Drives: Firehawk
Join Date: Jun 2009
Location: Port Huron
Posts: 211
Quote:
Originally Posted by Matt TuneTime View Post
This is all base on all of the injector flow data . Make sure it's correct .
X2
Steve@Vectormotorsports is offline   Reply With Quote
Old 11-26-2009, 07:51 PM   #7
mtcwby
High on "The Camaro Life"
 
mtcwby's Avatar
 
Drives: 2010 2SS, IOM, LS3, Vortech, LG cam
Join Date: May 2009
Location: Big Sandy, MT & Yuma, AZ
Posts: 1,028
Send a message via AIM to mtcwby
I've driven over 2000 miles after the Vortech install and 66# injectors.
I reset the mpg in the DIC before my trip to AZ and kept my gas receipts
for the 1300 mile trip. My actual mpg's were within .2 mpg of the DIC display.
So I'd say that the DIC is not effected by the change.
__________________
"The democracy will cease to exist when you take away from those who are willing to work and give to those who are not."-Thomas Jefferson------Going Strong at 39,250 miles
mtcwby is offline   Reply With Quote
Old 11-27-2009, 11:16 AM   #8
camaro1

 
camaro1's Avatar
 
Drives: 550+RWHP 2010 camaro
Join Date: Sep 2007
Location: wisconsin
Posts: 1,588
if you adj your virtual VE table your dic will not read correct
__________________
415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller
camaro1 is offline   Reply With Quote
Old 12-03-2009, 02:35 AM   #9
DallasPerformance
 
Drives: 911
Join Date: Dec 2009
Location: Dallas
Posts: 5
Quote:
Originally Posted by Matt TuneTime View Post
This is all base on all of the injector flow data . Make sure it's correct .
Not sure how it works on these things. However it doesn't work that way on the vettes. It uses IPW or IDC to calculate mileage depending on year model. No way to alter that to reflect correct values in the display.
DallasPerformance is offline   Reply With Quote
Old 12-03-2009, 08:24 AM   #10
Matt TuneTime

 
Drives: 2008 G8 gt / 2010 Camaro L99
Join Date: Oct 2008
Location: Lakewood
Posts: 198
Quote:
Originally Posted by DallasPerformance View Post
Not sure how it works on these things. However it doesn't work that way on the vettes. It uses IPW or IDC to calculate mileage depending on year model. No way to alter that to reflect correct values in the display.
If your Injector Data is off , not just the flow rate. Then your DIC will not read right [ your IPW or IDC will be off also ]. If all of the injector tables are correct for your Injectors [ The company would have had to publish the data AKA ford motorsports ] Then your DIC will be very close, even with a 79 lb injector ...
Matt TuneTime is offline   Reply With Quote
 
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Camaro ls3 news...true or false? Dark Knight Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 74 06-05-2008 05:29 PM
Bob Lutz, and Scott Settlemire on fuel economy. Mr. Wyndham Off-topic Discussions 19 11-18-2007 02:01 PM
Fuel Economy Estimates? LSxcellent Off-topic Discussions 21 07-05-2007 08:33 PM
New Job Openings at GM (Fuel Economy Research) TAG UR IT General Automotive + Other Cars Discussion 3 04-14-2007 11:18 AM


All times are GMT -5. The time now is 03:34 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.