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I did a few of the steps , I never saw that thread but it looks very helpful Thanks

No problem, I was just hoping someone would look at the tune file to see if I messed anything up when I first loaded the 5.3 parameters in the ecm which was originally a 4.8 set up
I am pretty...

Yes first thing I did was purchase the genuine GM throttle body ,

Thanks for the reply Yes I agree I dont usually throw parts at it. I just happened to have a OE maf on the shelf

Working on a 2003 Sierra, originally a 4.8 swapped in a 5.3 .. Installed a Trailblazer ss intake manifold, small truck Norris cam
Loaded in a stock 5.3 tune worked on the throttle body scalar...

HI,
Just finishing LT4 swap into 1st gen Camaro with T56 magnum trans

ECM looking for 40 PPR Trans vss is 17 PPR
Will changing what the ECM wants to see to 17 PPR cause any other...

Hello, Have a bad hesitation when I stab throttle with engine cold. It is not there after engine warms up , feels like a lean stumble. not sure where to look to adjust
cold enrichment if that's...

Great Thanks again for the help

Again, Thanks for your help.. Being new to HP Tuners, now that its running better is there a methodical approach to continue tuning on this truck?
For example Dial in MAF, VE table ,Speed...

Started fine ,not much flare, Its a different truck, way better. seemed to have a higher rolling idle at the end of RayMaug3 log.
appreciate the help.. maybe you could explain the changes so...

Been working on this for a bit now. 03 Sierra 4.8 swapped to 5.3. 10.0 to 1 CR,222/[email protected] 112LSA,TrailblazerSS intake and injectors,
LS3 90mm Throttle body using XLINK adapter, return style fuel...

log file. hot start, reverse over 2mph adaptive spark kicks out rpm drops. Jab throttle in P/N ok. Jab throttle in gear almost stalls.
cant seem to affect the almost stall when in gear and...

Yes

Already did that, Running into bucket drops to about 62. Would like to find out where the restriction is in the return line , Looks like the filter/reg is also causing
a bit of the problem

Looks like i will have to work with 64/65 psi fuel pressure . I can bump the IFR rate up a bit. Will the offset and short pulse adder remain the same? The fuel pump is the stock one

Must have a restriction in the return fuel line or tank module Checked fuel pressure at idle 65 psi, changed filter regulator same thing, tried 3 different gauges same thing, Checked pressure in...

Hi, Thanks for the explanation.but I am still a bit confused. ...

Great I'll write that in Thanks

Been working on this for a bit now. 03 Sierra 4.8 swapped to 5.3. 10.0 to 1 CR,222/[email protected] 112LSA,TrailblazerSS intake and injectors,
LS3 90mm Throttle body using XLINK adapter, return style...

Yes Just using the filter regulator style . should be 58 psi constant. Will check out the 05-06 files Thanks

Still looking for the TBSS injector flow rate charts. This is set up for a return type fuel system. Looked at a stock TBSS tune and the IFR is in Delta kpa
while the 5.3 gen3 is in kpa vacumn. Not...

Oh ya I bumped up the injector flow rate to 31 from 30 just to see what happened. I'll dig up the data for the injectors. They came with the Intake
from a stock Trailblazer SS. I look at the...

Still learning Engine changed from 4.8 to 5.3 , 10.0 to1 , 222/[email protected], 112LSA,TrailblazerSS intake with Ls3 90mm TB DBW p59ecm, Using Xlink adapter
Cold air intake, Have made changes to Base...

All good now, Must have missed something Thanks

Thanks , I have tried to gather info 3 times and tried to read 3 times. Still says no vin detected. Has not prompted me to generate new vin yet