Greddy turbo - correct connection of vacuum hoses - don't stuff this up!!!!!!!!!!!!!
03-09-2011, 11:31 PM
#76
Well it seems odd that it would just start doing that after I swapped the hoses; and I don't have a check valve on the OMP line, or any line for that matter.... What are typical OMP values read from the AP during warm idle... I could monitor those I guess. Will I need a check valve on the OPM line? will it see positive pressure?
No check valve necessary on the omp line (it wouldn't hurt though) - each individual injector has its own check valve anyway .
03-09-2011, 11:58 PM
#77
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Are oil injectors crapping out a common thing? I haven't really heard of it and my car only has 40000kms on it
Last edited by RotaryMachineRx; 03-10-2011 at 12:04 AM.
03-10-2011, 12:24 AM
#79
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hmm, I wonder if having the OMP line on the Charge pipe screwed with the check valves on one or more of the injectors somehow 
Will have to look into how to check them.
Hopefully someone who's seen this before can chip in...
Will have to look into how to check them.
Hopefully someone who's seen this before can chip in...
Last edited by RotaryMachineRx; 03-10-2011 at 01:10 AM.
03-11-2011, 07:40 AM
#82
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Both of my lines are going into my intake tube as I don't have a nipple on my charge tube. I see RotaryMachineRX's photos and am pretty familiar with my turbo setup and rotary mechanics but never dealt with check valves. I understand splicing the jet air hose and inserting a check valve but what is the other line that goes into the valve? Where does it go?
03-11-2011, 08:41 AM
#83
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That's not a check valve... It's a Tee fitting for my wastegate actuator signal. Also I was thinking iff the oil nozzle check valves did see boost airflow would still be in the same direction as under vacuum and shouldn't hurt the check valves...i think haha
03-11-2011, 09:17 AM
#84
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Okay reading the links Team posted (thanks by the way team!) having the OMP line hooked up post turbo is actually not a bad idea..... Although that is from 2007 I still think I am going to do a vacuum test on them with a hand pump. While I'm at it i will also do a vacuum test on my ssv actuator as it looked easy to get at with the air pump removed and i think mine was causing low MAF g/s when i was N/A.
03-12-2011, 10:02 AM
#88
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So OMP saw boost and jet air would be leaking back into intake under boost . Should not be a dramatic effect on logs but obviously better to get it right . Don't forget the ziptie on the hose in the red circle 
.
Also - do you need to change your post on the first page showing which hose is which ?
. Also - do you need to change your post on the first page showing which hose is which ?
just want to make sure what color is which hose "Jet Air Hose was marked with a yellow patch on it and the air hose from the OMP is marked in a White patch.?? thanks
03-14-2011, 11:28 PM
#91
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I installed a check valve in the jet air hose today and took the car out for a spin. My AFRs are leaner but considering I was running a conservative rich tune anyway I see no need for a re tune. Didn't get enough time to notice a power difference as I was too concerned with monitoring my fuel ratios but I did notice a difference in how fast the car accelerated. So far I'm going to leave it.
03-15-2011, 09:18 AM
#92
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Okay so if I want to do a vacuum test on my OMP nozzles do I have to do each one separately or would I be able to do the test on the OMP breather line? I did do the test on the breather line and I'm not sure is it's just the vacuum pump I am using or not but it would only get to about -0.5 bar (-7.25psi); where it is required to get to -9.65psi. After getting the vacuum as high as possible through the breather hose it would hold it for a few seconds then eventually go back to atmospheric in about 15 seconds.
04-05-2011, 11:30 AM
#95
I know what you mean man, every greddy thread (every important modding thread for that matter) has back and forth opinions and ideas on just about every little thing. At the end of the thread you still sit there and say, "sooooo is it better this way or this way???? "
I have come to the conclusion that you have to just read super slow and take your time trying to understand the fundamentals behind what each person is trying to say. If you can understand how each little thing actually works then you can start to read between the lines of what everyone is attempting to splurge out in posts.
"I have come to the conclusion that you have to just read super slow and take your time trying to understand the fundamentals behind what each person is trying to say. If you can understand how each little thing actually works then you can start to read between the lines of what everyone is attempting to splurge out in posts.
Last edited by Chris; 04-05-2011 at 11:45 AM.
04-05-2011, 11:52 AM
#97
I have to ask.... other than blowing the tubes off, what are the risks, if any, with running the jet air to the charge tube. And vise versa, what are the risks with running it pre turbo?
I understand The purpose of using the check valve, but I do want to decide between hooking the jet air hose up post or pre turbo
The only advantage to pre turbo that I can come up with is that the jet air would get metered air as apposed to boost.
Im am pretty much posting this so someone can come in and confirm my thoughts
I understand The purpose of using the check valve, but I do want to decide between hooking the jet air hose up post or pre turbo
The only advantage to pre turbo that I can come up with is that the jet air would get metered air as apposed to boost.
Im am pretty much posting this so someone can come in and confirm my thoughts
Last edited by Chris; 04-05-2011 at 11:57 AM.
04-05-2011, 03:23 PM
#100
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Well all the new GReddy turbo kits have a spot for the Jet air POST turbo. That is where mine is connected and with this set-up I believe there is no need for a check valve in the line. Also I tied in my Wastegate signal to this hose so it accounts for all the losses through the IC, etc.
Also I have an oil catch can so oil in the intake should be a non-issue.
Also I have an oil catch can so oil in the intake should be a non-issue.