Did a fairly long log of city driving at STFTs look like this:
STFT_log1.png
So I went into VE table to start adding a few %
Screenshot 2025-06-13 131644.png
But now the car won't start - nothing was changed in the lower 2000rpm/35kpa range.
If anyone has any advice that would be appreciated.
Trouble shoot the problem. Does it have fuel pressure, does it have injector pulse, does it have spark, does it have rpm signal when cranking. Not everything is tune related. No one even knows what the vehicle is.
Sorry, I don't think I was very clear.
Car starts/runs - I go for a drive and log STFTs
Notice they are quite bad (image) above
Go into VE table and start adding mostly in the circled region, not really changing anything in the idle area
Car starts and dies, smells very rich
Flash back to old VE table
Car starts
Nothing was changed in the tune for start/idle conditions so I am not sure what could be causing it to start and die
Post both tunes and a log with each.
This info helps
Vehicle make/model/year
Tune and data log
Engine/size
Axle gear ratio / tire size
Computer and operating system used
Type of heads (317/243)
Transmission
Torque convertor stall
intake manifold
Intake tube / air filter
MAP part number
MAF part number
Injector part number
cam used (link to specs)
exhaust type (long tube headers, no cats, straight piped)
pictures of engine
pistons
compression
throttle body type, size and DBW/DBC
Fuel pressure at idle and while driving
fuel system type, FPR, pump size, returnless or no
ect ect
Revdread_base_2025.hpt
Revdread_base_2025_fuel2.hpt
Two tunes above - fuel2 is with the VE table scaled up a bit
25-06-07 15-45-44.hpl
This is the log I am trying to correct for - looks lean, particularly concerned with it right before going into PE
It cranks and fires instantly but dies after about 1 second - Almost like it cant run long enough to fail the MAF and go the the VE table?
Last edited by BroPeep; 17 Hours Ago at 05:06 PM.
You have P0103 set to MIL on 2nd error. Change it to MIL on 1st. Change your MAF Fail to 0, not 200.
If those screenshots are accurate, you've got a 2 bar VE table and your logging stock 1 bar break points..... cant view the logs and file right now...im not on my laptop..
"I don't care how it runs as long as it chop chops at idle"
Yes sorry - was only logging 1bar MAP. PE starts before it runs out of 1bar though
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