When I turn my key to the "accessory" position, my 60mm Omori Boost gauge goes to zero. But not exactly zero. it actually goes to 1 psi. Also, when I hit full boost, the gauge reads about 14 psi, but when I press on the button for the memory/playback feature, it reads 16 psi. Why? I never hit 16 psi.

Anyone know why? Is there a way to calibrate the gauge so it reads at 0 psi at first power, and to read my peak boost accurately?

BTW: I'm not using the plastic "Y" fitting that came with the gauge because it was too small for tapping off the blow-off valve.
I'm using a "T" fitting that I got at an auto parts store. I noticed the original "Y" fitting had a brass restrictor for the hose that leads to the sensor. The new "T" that i'm using, does not.
Can this be the cause of the incorrect peak/playback reading?

Please help me if you know.
Thanks
TT

there is a "switch" on the back of the gauge- try putting it to the other location. iirc that switch accounts for a different boost reading- why I don't know, but I noticed it when playing with mine

good luck

speed safely

Brian :devil:

The missing restrictor would play a role in inaccurate readings. However this should not effect initial calibration at startup was it always at 1psi at start up or has this started recently.

Unusual that you would find the Y too small, we have used before with installations and had no problems, even before the zip ties we always use on vaccuum/boost hoses.

Slvrblt -
According to the directions, the switch on the back is to set the warning feature. You switch it over, then turn the adjustment to where you want your peak boost warning to be, then switch it back.

Charged Performance -
Yes, the gauge read at 1 psi since the beginning. I just installed it a few days ago. Actually, it's not 1 psi exactly, more like 0.75 psi.

About the "Y" fitting. A few people have told me about it not fitting the hose off the blow off valve, including the place I ordered it from. Apparently it is included for connecting off of the fuel pressure regulator, according to the directions. I have ordered the optional P-94 fitting to replace the cheap plastic piece I have there now. I'll see if that does anything.

I still don't understand why it would playback 16 psi when I only hit 14? I would guess that's an electrical issue inside the gauge as opposed to being an issue of the "T" fitting. But that's just my guess.

Thanks for your responses.
Anyone else know?

TastyTurbo - I'd start asking some vendors that have supported Omori's products, and quickly at that. From what I understand Omori is no longer being supported in the US market, and you may have a hard time (if you waited too long) finding someone that is familiar enough w/the product to help you out. Trying to be helpful....as I was trying to source 52mm Omoris for my STi as they match the factory gauge backlighting perfectly, but couldn't find the 3 that I wanted in stock anywhere, and was fearful of problems down the road that nobody could help out with. Wishin' ya the best of luck!

Update -

I contacted Thaison at J-spec tuning and he's sending me the
P-94 "T" fitting. He said to try that and see if the inaccurate playback reading is corrected. If not he'll get me a new gauge.
So I should get the fitting tomorrow, I'll see how that goes.

As far as the startup inaccuracy (showing 1 psi instead of 0 psi),
I've noticed that it's intermittent. Sometimes when I turn to accessory, the gauge is exactly at 0. Other times it's at .5 psi or .75 psi. So maybe it's a electrical current issue.:confused:
Maybe more volts causes it to read higher than it should.
I don't know.

I'm not TOO concerned because the gauge at full boost reads a touch past 14 psi, which is what it should be reading.
Stock boost is 14.2 psi if I'm not mistaken. Someone feel free to correct me if I'm wrong.

So it's just the playback feature and the accessory startup that's incorrect. Not critical for checking engine performance. So I can live with it. I think.

Originally posted by STiDayDreamin'
TastyTurbo - I'd start asking some vendors that have supported Omori's products, and quickly at that. From what I understand Omori is no longer being supported in the US market, and you may have a hard time (if you waited too long) finding someone that is familiar enough w/the product to help you out. Trying to be helpful....as I was trying to source 52mm Omoris for my STi as they match the factory gauge backlighting perfectly, but couldn't find the 3 that I wanted in stock anywhere, and was fearful of problems down the road that nobody could help out with. Wishin' ya the best of luck! Unfortunately, this is a lie being spread by the former Omori NA partner (http://www.omori-na.com/). Those folks are who I bought my first two gauges from and I can tell you from personal experience that they are dishonest. They told me that they were clearing out their inventory to make way for new models and that they would have the other gauge I was looking for in a couple of months (also said they would be there for any support I needed). I finally learned from someone else that they were actually clearing inventory because Omori Japan broke ties with them in particular. I tried contacting them less than a month after I bought my first two gauges and they wouldn't return my messages. ........a couple of months later Omori Japan set up a new relationship here in the U.S. for distribution of their products.

Here is the new Omori USA website:
http://www.omoriusa.com/

JSpec is one of the authorized resellers and it's my understanding that they gladly will help with warranty support for gauges purchased through them. Hope this clears things up.

- Kean

Originally posted by TastyTurbo
Update -

I contacted Thaison at J-spec tuning and he's sending me the
P-94 "T" fitting. He said to try that and see if the inaccurate playback reading is corrected. If not he'll get me a new gauge.
So I should get the fitting tomorrow, I'll see how that goes.

As far as the startup inaccuracy (showing 1 psi instead of 0 psi),
I've noticed that it's intermittent. Sometimes when I turn to accessory, the gauge is exactly at 0. Other times it's at .5 psi or .75 psi. So maybe it's a electrical current issue.:confused:
Maybe more volts causes it to read higher than it should.
I don't know.

I'm not TOO concerned because the gauge at full boost reads a touch past 14 psi, which is what it should be reading.
Stock boost is 14.2 psi if I'm not mistaken. Someone feel free to correct me if I'm wrong.

So it's just the playback feature and the accessory startup that's incorrect. Not critical for checking engine performance. So I can live with it. I think. ~14 is what I get as well. As far as the 16psi reading, do you think it's recording an actual "quick spike" that's occurring? I don;t know the likelihood of this.......just throwing out an idea.

- Kean

Originally posted by Kean
~14 is what I get as well. As far as the 16psi reading, do you think it's recording an actual "quick spike" that's occurring? I don;t know the likelihood of this.......just throwing out an idea.

- Kean

No, because I'll get on WOT for a short time while watching the gauge the entire time and it never passes the 14 1/2 point.

I did run WOT while the gauge was in playback mode the entire time, and I watched it go to 16 psi. Once again my car is stock.
I'm guessing there is a different measurement source for playback.

I got the new fitting today and I'll install it tomorrow and see if the playback gets fixed.

Hope it works out for you.

- Kean

Update-

I installed the P-94 fitting yesterday and it corrected the playback accuracy.
It now reads correctly.

As far as the start up inaccuracy, it's intermittent as I posted earlier.
It may be affected by temperature or voltage.

I think once the engine is started it reads pressure and is accurate.

So I recommend Omori gauges, just make sure you use the right fitting to tap off of the blow-off valve.

TT

TT,
Glad everything worked out. I didn't know that the restrictor T made that much of a difference. Good to know for the future.
Thaison

Originally posted by Charged Performance
The missing restrictor would play a role in inaccurate readings. However this should not effect initial calibration at startup was it always at 1psi at start up or has this started recently.

I still don't understand why it would playback 16 psi when I only hit 14? I would guess that's an electrical issue inside the gauge as opposed to being an issue of the "T" fitting. But that's just my guess.

Once I knew the part was ordered and being used I wasn't going to disagree with you since I knew that your solution was incoming. To explain the problem though it is that while the sender will smooth out the needle so that it isn't jumping with each pulse (keeps it readable and useful) - the unit is recording electically each of the pulses and will play them back - the restrictor mechanically smooths those pulses so they aren't recorded at all. You can also observe this in mech gauges that don't use the restricter as it will be jumpy without the restricter. The gauge shows steady pressures but the actual pressure in the intake ebbs and flows with the intake cycles.

I don't know if the electrical sender is an absolute gauge or not. If it is your variance from zero is to be expected though since as atmospheric pressure changes you could be above or below 1 standard bar or around 14.6 - for instance if you ever go to the mountains it may read negative at start up of the gauge. You probably would notice a correlation to high and low pressure periods if you monitored them against your gauge start up.

Glad all was resolved and you are happy with the results - of course Thaison was going to make sure all was right... never had a worry about that.

Ed.