I'm using tunercats and is their a table where I can add fuel vs rpm when in open loop? I know I can in closed loop, but I'm keeping an open loop tune and need to add fuel at 5500+ when I max out my maf.

 

You can "patch" the problem of maxing out the MAF in two ways:

1. If you haven't maxed out the frequency range of the MAF, but rather maxed out the gm/sec at 512, you can lower the fuel injector flow rate to richen the fuel mixture, then adjust your MAF calibration table accordingly. For instance, let's say your injector flow rate is 24.91 lb/hr. If you reduced this value 10% (e.g. to 22.42), you would richen the fuel mixture 10%. If you turned around and reduced your entire MAF calibration by 10%, your fuel mixture would be spot on, except you have more room in the MAF table. If you've maxed out the frequency, there's not much you can do other then increase the MAF size, or....

2. Command a richer then desired AFR at WOT via the % change to AFR at WOT table. This requires some work with a wideband to make sure the actual AFR is correct.

 

#1 won't work, the lt1's maf max out, along with the pcm maxing out.

#2 won't work because its not via rpm, so it would dump fuel below 5500rpm and make me PIG rich.

Some have got the PE tables to work while others haven't, I haven't tried on mine yet to see if it will work yet or not.