c5 flex fuel questions
Hodge, your still running a MAF on this? BTW, if anyone knows how to take a config from someone else and install/use it, can you please pm me? I lost a hard drive with my configs and now I have to start over. If anyone has a nice setup they would be willing to share, I would appreciate it. Next time, my stuff will get saved on my google drive.
Can you give a list of what you had to do (ie. re-pinning the pcm connectors). What did you have to do for the O2s pin wise, since you mentioned that some grounds were different, or were those secondary O2s?
I have an 02 Z06, and so does my tuner and our other friend who would like to complete this. Most of the information in the thread is helpful, but where you really started contributing to your specific scenario at post 93 is where the thread starts to shine for the C5.
Thanks in advance,
I actually do have a reverse lockout issue with mine but everything else works fine. I just push through the lockout and it's not that big of a deal for me.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I am wondering if your pedal has the on off feel when you first press it and release it? If not, I will try the OS you are using and do a compare to see why I managed to resolve the reverse lock out in the tune.
I had an 04 Tahoe file and did something in the tune (can't remember now) and did not have the reverse lockout issue, but I did feel as if the pedal was quirky under light throttle and got tired of the fuel reading issue I was having.
I am wondering if your pedal has the on off feel when you first press it and release it? If not, I will try the OS you are using and do a compare to see why I managed to resolve the reverse lock out in the tune.
I am wondering if your pedal has the on off feel when you first press it and release it? If not, I will try the OS you are using and do a compare to see why I managed to resolve the reverse lock out in the tune.
in a 2000 trans am, can I load a 03 express van flex file in ? I have a manual valve body 4l80 . I will also have to make my vin match again as well , we have to plug in for state inspection in Baton Rouge parish. I have a sensor and pig tail to install, just have to get operating system correct. thanks
TECH Fanatic
Joined: Jan 2018
Posts: 1,060
Likes: 198
It's kind of funny seeing people tell a C5 owner to use an "express van" PCM for this, because the 2004 C5 used that same PCM. And since the 2004 used the same PCM, there's clearly no issues with DBW (there were some questions about that earlier in the thread).
It's my understanding that an alternator wire should be moved from pin 52 to 75 on the connector that was red with the P01 and becomes green with the P59. That's what I did when I upgraded my 02 C5 to a P59, and it works fine. Given all the comments early in this thread about not needing to move any pins, maybe that wasn't strictly necessary.
The P59 also expects to be monitoring current from the O2 sensor heater grounds, so you'll get some check engine lights from not having those wired up, but they can be disabled and you'll still be exactly as good as the 2002 cars were when they left the factory.
It's my understanding that an alternator wire should be moved from pin 52 to 75 on the connector that was red with the P01 and becomes green with the P59. That's what I did when I upgraded my 02 C5 to a P59, and it works fine. Given all the comments early in this thread about not needing to move any pins, maybe that wasn't strictly necessary.
The P59 also expects to be monitoring current from the O2 sensor heater grounds, so you'll get some check engine lights from not having those wired up, but they can be disabled and you'll still be exactly as good as the 2002 cars were when they left the factory.