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Anytime I turn the ac on it will work for about 2 miles then go into reduced engine power and throw code c0242

How much boost will stock gen 4 5.3 hold with arp head studs and arp rod bolts

I have a 2012 crew cab Sierra with a built 370 and a single 88mm makes roughly 800 had a single disc 3800 10? roadrunner and it took a crap and burnt the trans up wanna stay around the same stall size

No it’s locking in 6th gear if I’m on interstate it’s stays 150 but if I’m in stop and go traffic it steady goes up

Hi I have a 12 Sierra turbo 5.3 just swapped motor and before motor swap trans would stay 150-180 now after 15 mins of driving it will go to 220 and if converter locks it will go down but if it?s...

It doesn’t smoke as bad with the charge pipe off

It’s a iron lmg and I just put pistons and rods not even 1000 miles on them and it’s been doing this since day one the turbo is a brand new vs racing billet 87/83 was put on with this motor it’s got...

Have a .60 restrictor and both valve covers are vented to catch can no oil in them

Smoking and smoke during acceleration don?t smoke at idle or during start up compression is 185 in all cylinders but is also burning 2 quarts of oil every 500 miles

It?s a 2012 5.3 e38 Sierra it has a 226/234 .525 .525 109 Lsa tick t4 manifold with a billet vsr 87/83 80lb deka injectors walboro 450 pump wastegate with 8psi spring 6l80 with billet 3800 converter...

Ima just try and do it myself now that I bought HP tuners was just trying to get pointed in the right direction and the shop told me I had bad injectors so I sent them to have them flowed and they...

And I have a wideband it’s just not connected to HP

A shop tuned it for me and it don’t run great it has deka 80lbs in it and it’s only on 8lbs

can anyone tell me whats wrong with this tune truck gets 6.1 mpg and when comes into boost black smokes the goes lean up top

turbo 2012 sierra 5.3 226/234 .525 .525 has a vs 78/75 80lb deka injectors idle afr is 12.6 as soon as i start drive it goes to8-9 same thing at wot heres a log and tune file107285107286

105952105952 heres a idle log

fuel trims were great until today when it got tuned for cam

216/220 .600 .600 112 tsp vvt-3 cam long tube headers cai throttle body spacer ltft 29.7 stft 29.7