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OMNI MAP sensor users who have had a failure - Please step in
Before I got my OMNI MAP sensor, I was told it was going to fail in a short amount of time. I said whatever, I am going to try it anyways. Well, I have a feeling all of you were correct like normal. I just wanted to see what symptoms everyone was having when theirs failed to pin point if this is truly my issue or not. My issue is that when I am transitioning from vacuum to boost, the car will hesitate and backfire once or twice and then go like normal. I am going to say it happens when I hit around 20 psi. If I go from 5 psi to 20, all is fine. But when its below boost and I go into boost, it happens. This issue has slowing been getting more consistent. Before, I could only get it to happen once every couple times I drove the car, rare enough that I couldnt log the issue. As of today I can pretty much make it do it on command. Has this same thing happened to any other OMNI users? What symptoms did you guys have as your sensor went out? Thanks.
Brass or stainless? Since I have an aem ECU, that's the route I was thinking of going.
Stainless. You're ****ing stoned not running an AEM map with an AEM ECU. I'm subbing it on the stock ECU with some drivability quirkiness to avoid the hassles of the Omni going bad every 6-12 months.
Hahaha. In my defense, I got the OMNI for the stock ECU, so that I knew it would work. Then I switched to the aem... So now that the sensor may be going out, i can make the switch to the correct sensor. I dont know why you went with a 5 bar as that is a bit excessive, a 3.5 bar is more than plenty and gives your more resolution.
And on another note, I want to keep the opinions flowing. We have 1 person who says OMNI is pure garbage and 2 (1 didnt post on here) who said it's been years and the map is still fine.
Going to go log it to find out for sure or be even more lost in a bit.
Hahaha. In my defense, I got the OMNI for the stock ECU, so that I knew it would work. Then I switched to the aem... So now that the sensor may be going out, i can make the switch to the correct sensor. I dont know why you went with a 5 bar as that is a bit excessive, a 3.5 bar is more than plenty and gives your more resolution.
And on another note, I want to keep the opinions flowing. We have 1 person who says OMNI is pure garbage and 2 (1 didnt post on here) who said it's been years and the map is still fine.
Going to go log it to find out for sure or be even more lost in a bit.
I run 38-39psi on the hit. The 3.5bar isn't enough. Also, Aaron doesn't have scaling for the 3.5 on the stock ECU.
I'm not the only one that has issues with them. Multiple people I know they go bad semi-routinely.
Well I dont think its the MAP sensor. You can see where things start to go crazy and then I let off. Everything stays close to where it should be but you can see something is indeed going on. This is going to be fun to figure out. I will try a new MAP just to rule it out.
I dont know if my ECU supports load calculations or not. Right now it based purely off of boost and rpm.
But with the afr, timing, boost level and rpm staying steady, it's hard to pin point it to the map sensor. I would think I would see a big spike in the graph if the map sensor freaked out. You have to keep in mind that the logging rate is 1000x faster then you can do with an OEM ECU. This shows everything without missing anything.
I dont know if my ECU supports load calculations or not. Right now it based purely off of boost and rpm.
But with the afr, timing, boost level and rpm staying steady, it's hard to pin point it to the map sensor. I would think I would see a big spike in the graph if the map sensor freaked out. You have to keep in mind that the logging rate is 1000x faster then you can do with an OEM ECU. This shows everything without missing anything.
No I get it.
Usually in the stock ECU you'll see boost not be correct for load. Or AFR at wot will be change, or the car just acts weird and theirs no codes, like what you're describing, hard to start, poor idle, dying a lot, etc...
I had a omni 4 bar map fail on me in traffic after only 3 weeks of use. I was at a red light and idle suddenly dropped so low the engine almost shut off and it really struggled to stay running. I had to keep finessing the gas pedal to keep the engine running long enough to get off the road, felt and sounded like it was running on 2 cylinders. Thankfully omni sent me a new one for free and its been working fine for a couple months now...*fingers crossed*
Not a MAP sensor, but I got an Omni TPS for my S2000 to fix an erratic throttle voltage issue (which turned out to be a shorted wire). I spliced in new wire but the car still jerked on throttle with the new TPS so I went back to the stock TPS and the car worked beautifully. The Omni TPS arrived broken.
