boosted map sensor info needed
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
boosted map sensor info needed Hey i have a 2bar os sd setup on my turbo silverado. The other day i noticed while tuning that my 2bar map was only reading 105kpa and flatlined. I was on 5psi at the time. My question is this, i have a 3bar map thats new laying around. Can i run or use it with a 2bar os? Thoughts?
Thanks.
Thanks.
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
I will connect scanner tomorrow and get a reading with engine off. Could be a bad sensor. If it was wiring it wouldnt read at all. Still have to ask could the 3bar sensor work??? I would think so and only read to 200kpa right?? Bc thats what the the 2bar os ve table goes to. I would need a 3bar os system to have a table past 200kpa corrct??
Hmm, maybe you're using hptuners... Check your pids how they are configured.
I doubt your sensor is bad, it's more likely a tuning software issue. I initially though about the sensor settings in your tune (that's why I asked for the reading with engine off), but I use more Efilive so didn't remember some hptuners specific things like different pids required after applying a COS etc.
I doubt your sensor is bad, it's more likely a tuning software issue. I initially though about the sensor settings in your tune (that's why I asked for the reading with engine off), but I use more Efilive so didn't remember some hptuners specific things like different pids required after applying a COS etc.
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Verdad Gallardo 3bar sensor will read up to ~300kPa absolute pressure or ~200kPa boost. Most OEM PCMs have limits as well, some flat line to 255kPa no matter how high the sensor would measure. Some don't accept negative MAP sensor offset values which may limit the sensor choice.
When OP talks about "being at 5psi" I'm assuming that means 5psi of boost, which is ~135kPa absolute pressure.
9 Second Club
Joined: Nov 2003
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From: Norn Iron
I will connect scanner tomorrow and get a reading with engine off. Could be a bad sensor. If it was wiring it wouldnt read at all. Still have to ask could the 3bar sensor work??? I would think so and only read to 200kpa right?? Bc thats what the the 2bar os ve table goes to. I would need a 3bar os system to have a table past 200kpa corrct??
Thread Starter
Joined: Dec 2009
Posts: 2,331
Likes: 29
From: Glennville, GA.
I figured it out. I forgot to add the 2bar map into the scan table. So it basicly wouldnt read anything above 105kpa without it. Dummy for not thinking about that. Lol.
Between tuning the wifes tbss and mine things get moved around on the sanner. Thanks guys.
Between tuning the wifes tbss and mine things get moved around on the sanner. Thanks guys.
Yeah, that's exactly what I thought when I realized hptuners... So the sensor was calibrated correctly and did give correct info for your PCM, but you just couldn't display it correctly.