Chevy and GMC Duramax Diesel Forum - Reply to Topic
01-04.5 LB7 Performance Parts Discussion Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising

Thread: Injectors? Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
12-10-2019 07:33 PM
huntfishchad Update on this post. Installed air dog lift pump, and tunes from motor ops. Defiantly seems like the truck is happier now being tuned properly and has very little hazing at idle any more. Think that was the whole issue.
11-13-2019 10:44 AM
DMAXfirefighter I think that would be the best place to start. I've not run his tuning, but I would suggest finding a reputable tuner close to you. That way its easy to make changes if something is off or you decide to modify things. It has worked well for me that way
11-13-2019 10:09 AM
huntfishchad I will try and get proper tuning on it to start. Looking at efi live from kory Willis. Any other suggestions or recommendations
11-13-2019 09:27 AM
DMAXfirefighter Balance rates only tell part of the story- to fully know injector health you need to see what the return fuel rates are from the injectors. Kind of a complicated test on an LB7. Generally the typical LB7 injector haze is due to the return rates being out of spec and not getting the correct amount of fuel into the cylinder, basically. Everyone says the 15% injectors (and up to 40% they say) don't need tuning. But to be fully efficient with bigger injectors, no matter what size, they need to be properly tuned to meter the correct amount of fuel and not have any haze.

A friend of mine has a triple turbo LB7 with dual pumps and 250%s in it. At an idle and just normal cruising it hazes all the time. Feed the beans to it and once it lights its clean.

My LB7 has 60%s in it, and a 63mm stock appearing cheetah. First start up cold and idling its got a little haze to it. Clean as can be when its warm.
11-13-2019 09:07 AM
huntfishchad Update just ran injector balance tests most were about 1.5-1.8 range. Had 1 that was 2.8-3.0. So injectors should be good?
11-12-2019 05:53 AM
mray If you do need injectors I would look into the new SAC injectors.
11-12-2019 05:19 AM
huntfishchad Ok thank you I will definitely look into having that done. Definaltly cheaper than doing injectors again
11-11-2019 09:45 PM
denarli6.6 That can all be controlled and adjusted through EFI live by a custom tune from whoever you choose to go with compared to your juice with attitude that isn't oriented towards the air and fuel you are running in the truck.
11-11-2019 09:24 PM
huntfishchad Efi live wont clear up the hazing at idle?
11-11-2019 09:07 PM
denarli6.6 Definitely do EFI live before you start messing with the injectors. EFI live vs. the juice with attitude will be night and day difference.
This thread has more than 10 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome