Mine drops to 54lb at WO even with the Walbro. Its the nature of the returnless fuel system.... Gotta love living on base, been down that route before.

 

so did you just tune for it? i got my tahoe to idle way better. it will run smooth and steady at idle with 16:1 afr lol. (knck on wood) i messed with the adders and left the offsets as per ole' boy on your thread at hpt. i guess he paid alot of money to get those offset values. oh and i got a new filter for the turbo. but its raining so i didn't really get on it.

 

You need a nice big garage. lol Hurry up and get out of the Navy so you can make $86K.

 

My pressure has always droped under boost some, there is no way around it with a returnless system because the FPR is in the bucket in the tank. In a way you already tuned for it that is why your IFR is sloped (all returnless systems have a sloped IFR table, Return systems do not.) Mine doesnt like to idle at 16afr, It will idle there fine but I dont like it. haha

 

so in some of my logs i get way positive fuel trims but my afr error % for ve is way negative. what give??

 

Post one up. Or email it to me.

 

you'll have to have the config i think i emailed you. but here is one from earlier when i went ot get pizza. note: i'm getting my pe alittle better i was able to lower the numbers in my pe table.

 

i lowered the timing one mor degree at 4500 rpm and got no knock this time. but i cranked it up on both sides of it. here is my current tune to take a peaky at. it no longerr as te vette adders i just never renamed it.

oh and 03sierraslt you got mail