I have upgraded alot of stuff in my engine and put in a psc and af wideband to help with tuning because I have an 03 hemi. After psc tune it got all messed up so I have taken out power and reset pcm. Now its hit and miss to start it. I am getting throttle actuator low and barometric pressure low engine codes along with ECT light flashing. I retightened the shorty wires I put on but didnt recallibrate TB after it was ported and wondering if this could be the problem. I tried getting out to take to shop yesterday and I couldnt even start it. It starts up then when I try to give it gas to hold idle it doesnt even acknowledge gas and just dies. Any ideas?

with your problem. Someone more knowledgeable will be along shortly to help you out.

did you left the map sensor wires from the PSC connected or did you reconnect all the wires as stock?
you should list your mods so we can help you faster.

I disconnected the power from the psc by unplugging red wire and reset pcm so everything else is still connected.

Mods:
J&M big flow valve heads-BFI-Superchip-dumped exhaust-Power Wire-dmh cutout-ati 5% pulley-custom overdrive pulley-jet stream scoop-Pacesetter lts-Viper efan-comp cam 260-4.56 gears-Hemiverter-Taylor Shorties-NGK spark plugs-PSC1-Headman ported TB-Wideband-slotted and drilled rotors-perf brake pads

also have comp springs, 6.1 pushrods, titanium retainers, 180 t stat

there you go, you have to reconnect the MAP sensor wires back togehter like tit was before or just power back the PSC and put every cell back to 10's and start again, if you want you can try one of my 260 tunes.

I already tried putting all 10s and return it to stock. Still ran horrible.

what are you using to monitor a/f in closed loop?

I have the innovate wideband and then a diablo for fuel trims.

It depends on the day but usually the problem is getting the truck to run so its impossible to get fuel trims if it will only start up and immediately stall.

you sure the PSC is connected right? the 260 should start and even run with the PSC alone on 10's.
make sure you are on the MAP sensor wire and that it's not connected backwards.

I thought the connection was messed up as well at first. The problems is I didnt do it. The guy that does all my installs did and I cant get truck to shop to have him check it. Does anybody have a picture of map sensor wire and where its at so I could check it out.

here check this post http://hemitruckclub.infopop.c...0069252/m/9890001864

not to sure about 04 models but in most cases if you had the throttle body ported there is a IAS intake air sensor that runs from top to bottom without an IAS the characteristics would be what your saying so maybe when they ported it they threw it away if so raise hell!