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Thanks, I am on the hunt for an ecu. Will update once I get it all done.

Thanks for the advice, sorry for the delay been super busy. What I meant by the issue didn't follow was like when tracking down a misfire and you swap coils to see if the misfire moved. I swapped the...

My son recently bought a 2003 Chevy Blazer 4 door 4.3 2wd for his girlfriend bone stock never tuned and it has this issue after hitting a large bump, the tps signal shows 10% tp with no throttle...

Thanks for the info, I will copy and paste and flash it in. I thought I was on the right track just needed more expert advise.

I recently swapped to LS6 coils from known 2003 corvette on my 5.3 swapped 79 C10 because I installed fancy valve covers with coil covers that are made to fit LS1 LS6 coils. I have read that the LS1...

sorry its been a while since i have updated, my buddy ended up in the hospital with some health issues so truck was put on back burner, we did end up going with the p59 setup and tuned out just fine...

i just plug in rear 02 and ziptie to inside frame so ecm can see it

yeah i didnt realize dtcs were like that i usually leave it alone to fail maf and just 1 out the diag for maf, so went through dtc list and turned a bunch back on, he had another buddy do the vat and...

if i disable maf cold or hot it wont start so makes it hard to sd tune if it wont even run no matter throttle position, i havent touched ve table no point if i cant disable maf, my original question...

ok thanks i will try that. all that i have messed with is the maf frequency. i was trying to find a way to sd tune this first but couldnt. the other stuff ive tuned i started sd then maf.

cant open your attachment

220/228 575/575 112+2 cam

stock intake for 2000 suburban with stock fpr return style rails, 46 psi fuel pressure at idle 58 with vacuum line disconnected, i havent messed with injector timing, no ac, clutch fan but he hasnt...

I am working on a buddies 65 c10 with a refreshed 5.3 with a small cam 4l60e no stall from a 2000 suburban DBW doner for engine trans harness and ecm and sensors with 33lbs flex fuel injectors...

thanks for the advice, i will mess it some and see if i can get it to idle, i believe i still have the file where i had ve kinda close with it set to 42 (that was 2 laptops ago so maybe i dont) just...

i figured it out was the msd wires put autozone set back on and spikes went away, have a call into firecore for a set

Here is log file from this morning.

I also have a 79 c10 with cam and heads 5.3 4l60e and had similar issue about a year ago and turned out to be weak bosch 044 pump, but wasnt the case with my silverado. Thats where i started with...

Sorry my laptop crashed so havent been able to log or or check forum, im using 03 cobra blue injectors dont remember part number off the top of my head, when i put 42 in for injector size couldnt get...

I am battling lean spikes while cruising 16.5-17.0 AFR, my set up is 99 silverado 4.3 5 speed with 52/65 T04E turbo 8 psi, p59 ecm swap, running closed loop speed density, marine intake 42lbs bosch...