I posted in the tuning section, but figured I would here as well. I'm doing a 5.3 -> LQ9 + Radix swap and am in need of a base tune for a "returnless" fuel system that would get me over to the dyno. Can anyone help me out with this? I have already checked the tune repository and it was negative for my setup. Thx.

 

I was in the same boat as you so I can suggest that you post all needed info. Cam(if stock then state), injector size, tuner (ie. EFI Live, HP Tuner, LS1 Edit etc.) that will be used to tune on the dyno and anything else required.

 

Understand what you're saying. I have HPTuners and have been tuning mine for a couple years now. I have a Radix tune for a "return" style, '03 and older, fuel system that I can work with. All I am needing is the Injector Flow Rate vs KPA VAC for 42lbers (see below). This will get me over to the dyno where I am having someone else tune it.

 

ive got a radix tune out of an 05 truck but it was an ls6......heres the ifr table though, hope that you can use it

 

thanks wolf!!! I plugged those values in and with a quick look the slope looks good. would you mind if i took a look at the tune? PM if you want.

 

I dont mind at all, but I'm not using hptuners so I dont know what good if any it would do you.....and my laptop's at home, Im stuck at work until after 3 today

 

This excel file is from RedHardSupra and will let you calculate values for your IFR table. Open it up and put in your injector rated flow rate and your rated fuel rail pressure and that should generate the values you need for your IFR table. It has sheets at the bottom for EFI Live or HPT type layouts.

 

Thx Mort! Worked like a champ.

 

I just seen this post, do you have it sorted out? I can give you a IFR table for 43lb injectors if you need it. PM if so.

 

sent you a pm 03.