Need some help
03-01-2008, 03:54 PM
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Need some help Well I just switched the car to a 2 bar with 60lb injectors, after flashing the ecu the car starts very hard. After it finally does start all you can smell is fuel, and it smokes badly, and shakes violently. I have the IFR scaled right for the injectors, and the OS for the 2 bar. Right now I'm at a loss for what to do, anyone have any ideas so I can get it running?
"Sumptin wong".. 
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03-03-2008, 02:52 PM
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Be sure you are looking at the right MAP PID, I think
there's a new one that supplements the original when
you go to the custom OSes.
You may have to play some with injector offset value,
it's certain to be somewhat different than the stockers
but good luck finding any data; cut and try. You may
also need to shorten the minimum allowed pulse width,
see if you are bumping up against that and being forced
to overfuel as a result.
there's a new one that supplements the original when
you go to the custom OSes.
You may have to play some with injector offset value,
it's certain to be somewhat different than the stockers
but good luck finding any data; cut and try. You may
also need to shorten the minimum allowed pulse width,
see if you are bumping up against that and being forced
to overfuel as a result.
03-03-2008, 08:37 PM
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Ya that was an old file sorry, also found that the VATS was turned on, turned it off and now it starts just fine, but then instantly dies no matter how much gas you give it. Now the map shows 0psi with the 2 bar.
03-04-2008, 09:11 PM
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Ok messed with the car again and found that it is throwing a P1626, I deleted the code, and it still won't idle. Another thing is that when I put the VATS to either PWM or None, it will start and idle but it is very ruff and won't move, while it still smokes. If I put it to Serial it starts normal, sounds good but will just fall off and die right after it fires. I don't know what else to do now.
03-06-2008, 09:37 PM
#14
Looks like the scan is all dead, until the very last second of the log, when about 400 rpms showed up for one frame. That frame also shows 183 kpa for the map, which would be about 12 lbs of boost...
Are you 100% sure you have a 2-bar map sensor in the car?
What was the part number on it?
Are you 100% sure you have a 2-bar map sensor in the car?
What was the part number on it?
03-09-2008, 10:30 AM
#18
A stock sensor will also say to the pcm (like your log above), when you are first starting the car, "hey I'm in boost" gotta throw a bunch of fuel at it... It will flood and still be a no-start situation.
This is because a stock sensor will report the full 5 volts at key-on. Which now with your 2-bar OS, 5 volts means 15 psi of boost. The stock sensor uses 0-5 volts to represent full vacuum (0v) to full atmosheric pressure (5v).
The correct sensor for your OS will report 2.5v (or so) at key-on. Which your 2-bar OS now recognizes as regular atmospheric pressure. A working 2-bar sensor uses 0-5 volts to represent full vacuum to 15 lbs of boost, with normal atmospheric pressure in the middle of the range.
This is because a stock sensor will report the full 5 volts at key-on. Which now with your 2-bar OS, 5 volts means 15 psi of boost. The stock sensor uses 0-5 volts to represent full vacuum (0v) to full atmosheric pressure (5v).
The correct sensor for your OS will report 2.5v (or so) at key-on. Which your 2-bar OS now recognizes as regular atmospheric pressure. A working 2-bar sensor uses 0-5 volts to represent full vacuum to 15 lbs of boost, with normal atmospheric pressure in the middle of the range.