Just wanted to remind Omni Map sensor users to replace or reuse your o ring from the stock map sensor.

I have personally experienced a 100% leak ratio when installing the Omni map sensor with the supplied o-ring.

My solution to the problem- replace the supplied O ring with a 2.4 W x 11.8 I.D. O ring. It is a thicker o ring and ensures a leak free seal. Remember to use some sort of lubricant, don't just jam the sensor in dry.

I have had 2 cars come through my shop this week so far with boost leaks here.

 

good info

 

where did you get the o-ring?

 

how big of a leak is it? i used the supplied o ring not knowing any better, and have whacky fuel trims.

 

Thank god someone else had this problem. I've gone through one that started to crack from my own mishandling (but was leaking prior to my hamfisted abuse) and the second one I got leaked as well.

I will try the o-ring you mentioned.

 

Yeah I came into his problem last year. I ended up going to advanced auto and purchapsing the only multi pack that they carry and supplied was an o ring that fit perfect without leaks. I don't know the size of it but hopefully that helps.

 

I picked up an assortment of metric o-rings. The size listed above worked the best. Napa/Harbor freight both good places for O ring kits


Enough of a leak to make a difference. Think throttle body seal leak.

 

interesting...ill see if i can pry the ring off the stock sensor without killing it.

 

To the top again for the people who didn't catch this last time

 

i think i owe you a beer. i swapped over to the 40k mile stock o ring, and appear to have picked up at least 1 in/hg at idle. giving the trims a few more days to adjust and see where i get...but im already seeing better than i was.

 

Thanks for posting!! I didnt know about this issue. I'll add it to the list of things I need to do if I ever go to work on my car again... lol

 

ok heres a question for all the tuners out there ... can i just replace my stock map sensor with the omni one and be fine? im running hks vpro with knock amp so it uses both the stock map sensor and the supplied one from hks... im wondering if i can just replace it and still be ok tune wise anyone have any thoughts on this??

 

no idea if it will work with the hks, but to use it with the stock ecu you have to adjust the scalings since it is a wider range of measurement than stock. so no you cant just stick it in and have it work.

 

yeah i read that a while ago u have to go in the ecu and adjust stuff but thanks for the info and help

 

I have installed over 75 of these and I havent seen a leak. I will check next time I boost leak a customer SD car though just to be sure. I will call Steve and bring it up though.

Aaron