Map reading and fuel are way out of wack please help I'm getting 5mpg
#1
Map reading and fuel are way out of wack please help I'm getting 5mpg
The cars a 92 with an original mspnp with a map daddy and vtps. The car was running better than ever then all of a sudden my afr is between 9 and 10 or so. My map reading is fluctuation tremendously between 50 and 110 kpa at idle. This is all new, its never acted this way before.
I filled up the car today and after 90 miles of "tuning" and no change I'm out of gas. I need the car for work in the morning, but I just don't see it happening. If anyone can help I would appreciated it. At this point I'm willing to pay for a tune that just makes the car driveable, I don't care about max power.
Log and MSQ attached.
I do have a wideband, i re-calibrated the sensor, redownloaded the firmware and tried everything listed in the instructions and most help files I've found.
The cars running a t28 with rx7-460's
I filled up the car today and after 90 miles of "tuning" and no change I'm out of gas. I need the car for work in the morning, but I just don't see it happening. If anyone can help I would appreciated it. At this point I'm willing to pay for a tune that just makes the car driveable, I don't care about max power.
Log and MSQ attached.
I do have a wideband, i re-calibrated the sensor, redownloaded the firmware and tried everything listed in the instructions and most help files I've found.
The cars running a t28 with rx7-460's
#12
I checked the settings when I went home today at lunch it is in fact 26-96 I changed it to 80-110. Two other points of reference, I had to change the alternator belt Saturday because the old belt failed. My friend said the car completely died, as in died because it drained the battery and the alternator wasn't running. I didn't really pay any attention to this since when she called we just got their and changed the belt. The car just restarted. I drove the car after it got home I didn't think this would have been related, but if the battery completely died while the car was driving could that have thrown a setting off.
The second thing I noticed that the kPa read as high as 150 while I was just sitting in the car with the ignition switched to on, but not running. Is that likely to be a dead sensor, or one that is mis-calibrated.
As far as I know I can't recalibrate the sensor with my version of the mspnp.
I can try running a new line when I get home from work this afternoon.
If none of this matters, then I will order a new sensor, or better yet send the ms to DIY just to make sure everything is ok.
BTW I also verified the map sensor is set to 400 under constants and 4 bar in under the project settings in Tuner Studio. Constant Baro Correction' to Extra MAP fitted to X7 is listed as well.
The second thing I noticed that the kPa read as high as 150 while I was just sitting in the car with the ignition switched to on, but not running. Is that likely to be a dead sensor, or one that is mis-calibrated.
As far as I know I can't recalibrate the sensor with my version of the mspnp.
I can try running a new line when I get home from work this afternoon.
If none of this matters, then I will order a new sensor, or better yet send the ms to DIY just to make sure everything is ok.
BTW I also verified the map sensor is set to 400 under constants and 4 bar in under the project settings in Tuner Studio. Constant Baro Correction' to Extra MAP fitted to X7 is listed as well.
#13
Boost Czar
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was the MSPNP purchased with the map-daddy installed? 150kPa is high, like I suggested, depending on your location, should be between 80-110kPa, where you should see 100kPa if around sea level.
#14
No, the 400 sensor was added much later. I spoke with Ben about a reconfig of the sensor, he suggested I try the steps listed for my gen MegaSquirter. So I'm going to give the SNnS-e (029 and Newer) instructions a shot and see if maybe that helps. He said it should either be this, or a bad sensor (Config or Hardware). I'm a little concerned about going back to megatune to do this and then going back to Tuner Studio because of the error issue, but I don't think this particular issue is likely to get much worse.
#17
So I went through the setting and everything seemed to be in line in both Megatune and Tuner Studio, but the Map still listed 150 kPa. So I decided to disconnect the map line and leave it open, since as far as I know the reading should be basically the same connected or not if the engine is not running. Initially everything was the same. After 10 minutes or so I looked back at the MAP signal and it had dropped to around 114-120. I can see it fluctuate, and I'm not sure why thats happening, but it does change within that 6 point range. Considering condensation issues could leaving it open over night be a temporary solution?