Team ZR-1 Corvette Racers
Custom Tuning
>Enter Here
Test and Tune
Common Information
WEC Season Starts Feb 28th
by teamzr1. 03/01/24 10:42 AM
Cheaters in IMSA Rolex 24
by teamzr1. 02/24/24 04:37 PM
Corvettes go Wild and cops cannot catch them
by teamzr1. 02/24/24 07:01 AM
How Corvettes Gen 6,7 and 8 Place at VIR
by teamzr1. 02/22/24 07:15 PM
94 year old guy and a Corvette Sports Car
by teamzr1. 02/22/24 11:48 AM
Hig Speed C7 Crash
by teamzr1. 02/20/24 09:45 AM
Carvana Sells a Stolen Corvette
by teamzr1. 02/19/24 03:39 PM
Gang Banger Steals whole tractor load of C8s
by teamzr1. 02/16/24 06:53 PM
Corvette GT3.R reliability issues
by teamzr1. 02/01/24 08:40 PM
Newer Corvettes
2021 C8 DCT TSB N212350930
by teamzr1. 02/10/24 08:13 AM
2024 C8 Invoice Numbers
by teamzr1. 02/09/24 08:31 AM
Recall C8 Headlight Problem
by teamzr1. 02/08/24 12:14 PM
Tech Talk
Forum Statistics
Forums27
Topics3,409
Posts6,107
Members50
Most Online265
Jan 21st, 2023
Previous Thread
Next Thread
Print Thread
Rate This Thread
#750 - 06/21/01 07:31 PM Rebel's injector project  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
Next project for the Rebel is swapping out stock injectors for other types, tuning the engine management functions and seeing
what comes from doing so.

If you have read my post on team forum related to C5 injector sizes, you see for whatever reason the MYs 99 and 00s use a smaller injector then newer or older C5s.

Thus the Rebel's injectors are 26.4 lbs/hr

Being the PCM monitoring has told me with the mods the Rebel has the long term fuel trim was 8 percent too lean.

I used a MAF translator to solve that and is a good way to do air/fuel table issues, this new project will look at another way of solving the problem that also could have more positive end results.

My first shot is replacing stock injectors with FORD smile SVO 30 lbs/hr but because the way G.M's fuel system
operates these injectors will be more like 36 lbs/hr.

The PCM of course will not know the injectors are larger and maintain the same pulse width but the injectors of course will be spraying fatter, thus be richer which should correct the too lean condition, plus since it is richer, the PCM will change the timing.
Hopefully if my thinking is correct the timing change will be a positive to overall performance.

Remember the big drag shoot-out at Sears Point on the 4th of July !


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
Team ZR-1 Store
Enter Here
#751 - 06/28/01 04:52 PM Re: Rebel's injector project  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
I received the SVO injectors and have installed them.

You can see what the install looked like here>

http://teamzr1.com/injector/injector.html

Now I will start tuning the air / fuel tables and begin testing.


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
#752 - 07/01/01 06:14 PM Re: Rebel's injector project  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
Now tuning the larger injectors using the MAFT.

LTFT and WOT setting now about correct but too much engine knock causing tining to be retarded.

Review the results and give your ideas on how to cure the KR issue

http://teamzr1.com/20perkr.html


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
#753 - 07/08/01 05:00 PM Re: Rebel's injector project  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
Continued testing and now having WOT timing about correct and reduced some of the false knock.

http://teamzr1.com/2010avg.html

This put timing at about 27 degrees at WOT which is much better then the 18-22 degrees seen last week with the setting the MAFT was then

[ 07-08-2001: Message edited by: teamzr1 ]


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
#754 - 07/09/01 06:13 PM Re: Rebel's injector project  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
Now have the WOT timing to 30 degrees.
In fooling the PCM as to IAT was enough to bump the timing up 3 more degrees.

Results of IAT/timing trickery :

http://teamzr1.com/iatbpwot.html


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
#755 - 12/11/01 07:14 AM Re: Rebel's injector project  

**DONOTDELETE**
Unregistered
Anonymous
Unregistered


I am going to need a scan of the pcm so that my knocks and ltft's can be determined. I used a bad grade of gas last dyno and that may have reflected the knock count.

George


Moderated by  teamzr1 

Who's Online Now
0 registered members (), 14 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
What's New
Cheaters in IMSA Rolex 24
by teamzr1. 02/24/24 04:37 PM
Corvettes go Wild and cops cannot catch them
by teamzr1. 02/24/24 07:01 AM
How Corvettes Gen 6,7 and 8 Place at VIR
by teamzr1. 02/22/24 03:32 PM
2024 E-Ray Results at VIR
by teamzr1. 02/22/24 03:28 PM
94 year old guy and a Corvette Sports Car
by teamzr1. 02/22/24 11:48 AM
Hig Speed C7 Crash
by teamzr1. 02/20/24 09:45 AM
Carvana Sells a Stolen Corvette
by teamzr1. 02/19/24 03:39 PM
Popular Topics(Views)
Techie
2021 C8 DCT TSB N212350930
by teamzr1. 02/10/24 08:13 AM
2024 C8 Invoice Numbers
by teamzr1. 02/09/24 08:31 AM
Recall C8 Headlight Problem
by teamzr1. 02/08/24 12:14 PM
Powered by UBB.threads™ PHP Forum Software 7.6.0