Well I bought a used set of heads, PRC stg 2.5 5.3's. Took them to a friends machine shop to have them inspected, and cleaned up. They look good up next to a set of 243's so I should have them back mon or tues. Hopefully they will be on my truck next weekend if all goes planned. Yesterday I finally installed my walbro 255, I was pretty simple, no need to cut the bucket or anything, pretty much a straight swap. Had to wire up the walbro plug to the factory plug. Had it back in the tank, primed it a few times to get fuel in the bucket, and it fired right up, not one single sign of starvation. Drove it to work, and home with no problems. Now I need to figure out if my MAf is bad, I've replaced both O2s, and I still have codes thrown, bank 1-2 rich. Any ideas? I've searched it and found multiple answers, some say fuel pump, some say 02's and some say MAF. so if it's my MAF, and if it needs to be replaced, would a SD tune be better? Or can I get a 100mm TSP MAf? Sorry for jumping form thing to thing, but this is what's going on with my "project".

 

No need to get a bigger MAF. Waht is everything that has been done to the engine and fuel system? Have you had a tune at all? Might want to try some MAF cleaner to see if it helps.

 

I have cam, lsxrt, headers, tru duals, PB lvl 2, 4.10,s, 87mm stock 2010 TB with X link, I de- screened the MAF along time ago. Ita been tooned after my intake, but had trashy 02's so I replace those, with 02's with OEM. so 02's are good, my fuel pump is brand new, so now what

 

Good luck with the project

 

I would find a stock MAF with the screen for starters...

 

on the street is that de-screening the MAF is a net loss in HP. it allows for more turbulence in the intake iirc.

 

Thanks! I'll be posting once I get my heads back and when they are installed

 

I'll look for one! I found one for sale, I'll see about picking up up

 

This is true...MAFs are very sensitive to turbulence. Even orientation/clocking of the MAF can have a huge impact on performance.