loss of fuel at upper rpms?
#17
Well I figure better late than never its been awhile but I just got my chip back and the chip tested out fine. I had them wipe it clean and re do the tunes as well Just installed it and it still runs the same. I put the scanner to it and put the chip at its highest hp
(80HP) and I got 2700psi wide open and 2400 on stock & smoke runs ok on smoke and stock and still runs like crap on any other tune.....what else could it be IDM?
Thanks,
Joe
(80HP) and I got 2700psi wide open and 2400 on stock & smoke runs ok on smoke and stock and still runs like crap on any other tune.....what else could it be IDM?
Thanks,
Joe
#20
Joe, I can't find a valid code P0196 ... was that a typo?
Truck might be DE-fueling due to over boost situation with chip. Do you know what your boost is when this happens? The boost the PCM is reporting as read with a scanner and not a mechanical gauge boost reading.
Try unplugging the MAP sensor and let the PCM estimate boost and see if the problems improves. With the MAP unplugged you will get a CEL but it will go away when you plug it back in.
Truck might be DE-fueling due to over boost situation with chip. Do you know what your boost is when this happens? The boost the PCM is reporting as read with a scanner and not a mechanical gauge boost reading.
Try unplugging the MAP sensor and let the PCM estimate boost and see if the problems improves. With the MAP unplugged you will get a CEL but it will go away when you plug it back in.
#24
#26
Maybe someone on here that has the snap on can chime in and helps us out on getting it to read boost. Also 75 PSI is a bit high on fuel pressure. Ideally 60-65 PSI is the sweet spot, not saying that is your issue, just want to make sure we are not introducing a problem. Remember, the higher the fuel pressure the harder it is for the injectors to open.
#29
Joe, they are kinda expensive, around $150 and the last one I saw on e-bay went for $70. There is a tech bulletin where Ford put some bar 2 MAP's instead of bar 3 MAP's on certain trucks but don't know if that is your issue. I think you should be good depending on the boost numbers but MAP sensors do fail. I simply hate suggesting someone buy an expensive sensor without supporting data, such as how high is the boost number when issues occur?
#30