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08 Silverado running a speed density tune. After a new tune is flashed it won't start at times. Once the MAF fails it will start fine until you flash it again. MAF fail set to 0hz, P0101,p0102,P0103 all set to 0 first error. MAF table is zero out.
It getting really frustrating trying to get it started. What's going on that I'm missing?
Put 6 g/s (or about what the RAF would be set to at idle) in the MAF 0 HZ cell.
should help you ride through the fail setup.
Post your tune please.
Ed M
Whatever you do make sure you don't kill it till 30 seconds after the fail process!
Don't worry OP my G8 is being very fussy about it too.
Cycle the key if you aren't already.
Tried cycling the key and repeated reflashing. It's pissing me off.
Start by posting your current tune.
Here it is.
Does your truck have an issue with the TPS going down at idle when the MAF fails?
I had similar behavior and resolved it by increasing the values in the VE tables in the idle area and adding airflow in the idle range to the MAF Airflow vs HZ table.Quote:
Originally Posted by scooter k
Also, the VE correction factor table creates a bias of MAF vs VE airflow, you may want to make sure that's completely biased to VE. Although, I suspect that table is ignored once the MAF fails, but it may play a role in the mean time.
BTW, there are areas of negative timing in your "Cranking Spark" table.
You part of Hennesey?Quote:
Originally Posted by Steve@HPE
considering you have the maf table 0'd out its pretty normal that the pcm wouldn't run UNTIL you set the maf to fail.
/thread.
I don't understand why people zero the MAF table for SD.
I believe the custom operating system application process automatically 0's out the maf & ve tables(because it extends the maf table and creates a ve table from scratch), we've found that in most cases the ve table must have at least some sort of baseline even if running SD only(not sure why this is but it is what it is I suppose).
So I need to put something in the MAF table then even though there isn't a MAF at all? Anything else?
The only MAF table that gets zeroed out is the MAF High in applications that have two MAF tables.Quote:
Originally Posted by Bill@HPTuners
No....Hines Performance Engineering. I have family members that race/build motorcycles you may have heard about, but I do cars.Quote:
Originally Posted by IDRIVEAG8GT
Is my 2nd post invisible :shrug:
WE ARE ALL BLIND! :doh:Quote:
Originally Posted by mowton
Sweet, I'm glad you're not. I was about to bash you about Hennesey screwed up DynoJet.Quote:
Originally Posted by Steve@HPE
:DQuote:
Originally Posted by IDRIVEAG8GT