93FD3S

Ok made a booboo I had the wastegate line running to the fuel atomization nipple, gonna reroute the wastegate line to the nipple on the lower intake manifold towards the fire wall instead. Then run the atomization vacuum line to one of the nipples on the upper intake manifold after the throttle body. Do I really need to hook up the fuel atomization nipple? I'm running aftermarket fuel rail with 1680cc injectors. Can I T the OMP vacuum lines together and run them to one single vacuum source? Or does each oil jet need there own seperate vacuum source? Will that set up work ok without any problems? Thanks for the help...!!

Snook

iTrader: (12)

Tony I think it is?

Ok well stock the 2 omp injectors are T'd not through a T but what ends up happening is that they go to 1 line and go on one turbo inlet nipple so yes T them and do that. Remember this is in FRONT of the turbo. So you have to have an intake and a place to put a vacuum line between the filter and front compressor. housing.

Next, yes I would use the fuel atomization line. What I did with my setup is try to follow all of the stock systems and move that as best as I could over into the single setup. Both the fuel atomization line and the wastegate line should be on nipples on your turbo outlet pipe. The nipple on the inside of the LIM facing the firewall should be used for the fuel pressure regulator IMO or at least thats what goes there stock.

Yanni

93FD3S

Yanni thanks for the help. Unfortunately I don't have any nipples tapped into my turbo so can I just run the OMP lines to the upper intake manifold (like it is now but T them together to 1 vacuum source)? Also can I connect the fuel atomization line to the upper intake manifold instead? Any drawbacks if I set it up this way? I don't have any nipples coming off my compressor side of my turbo and I really don't want to drill any. Thanks for the help again.....!!

Snook

iTrader: (12)

Hmm
So you can't put a couple holes in the pipe coming out of your turbo?
I think the fuel line will be ok to the UIM but I'm not sure

I know the OMP lines won't be as good anywhere else except for infront of the turbo because it is constantly pulling vacuum and pulls even more vacuum at full boost. If you put it on the UIM it will see vacuum when you first floor it and then boost as you start to boost...I think the nozzles open under extreme vacuum but I could be wrong.

Yanni

93FD3S

Yanni thanks..I talked to Keith over at KG parts. I bought the fuel kit from him and he hasn't notice any difference with the fuel atomization nipple plugged up or hooked up. So I guess I'm gonna try running without it hooked up and reroute my wastegate line to the rear nipple on the lower intake manifold. Besides I didn't really have any problems with the fuel atomization nipple not connected before. What ya think Yanni?

Sesshoumaru

iTrader: (1)

Try not to have a long vac line for wg (that's why most are on the compressor housing).

The long vac line increases delay. If you have it after the TB it has already experienced a pressure drop (across IC).

some things to think about.

Snook

iTrader: (12)

yes if you read the instructions for the profec b you are supposed to get the boost source from the turbo outlet or turbo to intercooler pipe. I would not run the wastegate line to the lim because of the pressure drop across the IC just like Sess said above great point

in this thread I told someone how the profec b was supposed to be installed the correct way I dont think they cared though lol
https://www.rx7club.com/showthread.p...ghlight=profec

about the fuel atom. line I know a lot of people run with it capped and also run with a lot of things capped/removed just because its easier. the way I think of it is that it can't do any harm to keep it, can only help. If you dont have the means to put it on right now its no big deal but if you can than I would. esp. since you have to put one nipple on for the wastegate line now just put 2 next to each other and call it a day

DCrosby

But you want to read the pressure where it matters !? Right ? The place where too much pressure can cause detonation, at the intake manifold.... not at the turbo... if the pressure drop say is 2 Psi, and you're tuning, for 10 Psi, and all of a sudden the hole in one of the Couplers closes due to new coupler, all of a sudden you're spiking 12 Psi....

Maybe bad example, but I've not seen many people tap for pressure other than the LIM....
And I do agree shorter hose = better...

Snook

iTrader: (12)

well the solenoid needs a vacuum to go to the turbo outlet pipe. From the back of the profec unit where you adjust boost you run a source to the upper intake manifold. There is no point into running it to the LIM as nothing dangerous can happen. The worse that could happen is that you lose boost between the uim/lim gasket or the lim/engine gasket. There is no way for MORE boost to build in the lim than what was measured from the uim

93FD3S

Yanni thanks for the help. So I guess it wouldn't really matter if I tapped a hole in the intercooler pipe before the intercooler for the wastegate line? As long as its before the intercooler correct? I would rather tap into there then drilling a hole in my compressor. My compressor housing doesn't really have a reinforced spot to install a barbed fitting like some of the other turbos.

Snook

iTrader: (12)

I have both of mine on the intercooler pipe right on the side where you can hardly see.
Here's an old pic
http://plaza.ufl.edu/yanni25/7work/b4tuning/1.jpg

Sesshoumaru

iTrader: (1)

I was only talking about the wg vac line. Look at stock turbos and how they have the wg line hooked (TII for example)

stock location is a good spot for map and boost guage due to it being above fuel and has gone through the largest pressure drop.