I have two issues.
Issues #1: Fuel Pressure (Pressure drop across fuel injectors in tune does not increase with boost)
Right now i am experiencing a extreme lean condition that starts off fat then back lean. I'm not the best with data logs but am learning. I trust my tuner and he says it is not in the tune. This last tune he put more fuel in just to see what it would do and its still going lean.
I thought the use of too many T/Y's in the boost line would be an issue so i put together a mini manifold ran off the lower S/C boost port. Looking at vacuum manifolds I realized i did not want to remove my blower to install a nice vacuum/boost manifold to the firewall. I ended up with something that I think works just as good and is pretty small somewhat out of site. Basically I used a piece of silicone to connect the mini manifold directly to the lower blower boost port. It has three outputs. (pics below)
Here is the routing of the boost lines now.
1: To regulator
2. To cabin for gauges and hobbs switch
3. FRPS & boost actuator
This did not change anything.
Ok so here is what I have verified to be working so far:
***My questions are: ***
1. My base fuel pressure is set to 50psi. With the car running and regulator boost reference connected it goes down to about 40psi. I believe the lose of pressure to be correct. Is it?
2. How much of a fuel psi increase should I see when the second pump turns on like I did with the car running at idle via the rail mounted pressure gauge. Currently it only goes up 2-3 psi if that.
Issue#2: Peak boost 12.5 should be 17 psi
I am running a stock lower and 3.0 upper. I am seeing about 12.5 peak boost for some reason. Boost goes up to 12.5 and stays there. I am using a new billet American racing tensioner and have not seen any belt dust. I just replaced my belt with a new Continental elite belt but no change. Still not seeing the boost it should.
So far i have checked the following:
and painted so as not to be seen as easy
IMG_6946 by Troy, on Flickr
Issues #1: Fuel Pressure (Pressure drop across fuel injectors in tune does not increase with boost)
Right now i am experiencing a extreme lean condition that starts off fat then back lean. I'm not the best with data logs but am learning. I trust my tuner and he says it is not in the tune. This last tune he put more fuel in just to see what it would do and its still going lean.
I thought the use of too many T/Y's in the boost line would be an issue so i put together a mini manifold ran off the lower S/C boost port. Looking at vacuum manifolds I realized i did not want to remove my blower to install a nice vacuum/boost manifold to the firewall. I ended up with something that I think works just as good and is pretty small somewhat out of site. Basically I used a piece of silicone to connect the mini manifold directly to the lower blower boost port. It has three outputs. (pics below)
Here is the routing of the boost lines now.
1: To regulator
2. To cabin for gauges and hobbs switch
3. FRPS & boost actuator
This did not change anything.
Ok so here is what I have verified to be working so far:
- Both pumps turn on when manually applied 12V and the rail mounted pressure gauge goes up.
- With the car running and 5psi+ applied to the hobbs switch, it sends power to the second pump.
***My questions are: ***
1. My base fuel pressure is set to 50psi. With the car running and regulator boost reference connected it goes down to about 40psi. I believe the lose of pressure to be correct. Is it?
2. How much of a fuel psi increase should I see when the second pump turns on like I did with the car running at idle via the rail mounted pressure gauge. Currently it only goes up 2-3 psi if that.
Issue#2: Peak boost 12.5 should be 17 psi
I am running a stock lower and 3.0 upper. I am seeing about 12.5 peak boost for some reason. Boost goes up to 12.5 and stays there. I am using a new billet American racing tensioner and have not seen any belt dust. I just replaced my belt with a new Continental elite belt but no change. Still not seeing the boost it should.
So far i have checked the following:
- Boost leaks (I believe this to be the issue, i just have not found any leaks and all the lines are new silicone hose)
- Made sure my new FORE fuel filter was installed the right way
- Checked the S/C Boost Actuator. It moves the rod to the valve and holds both vacuum/boost pressure (Have not removed the S/C to make sure the valve is fully closed which could be a reason I am not seeing peak boost. I doubt this to be an issue though.
and painted so as not to be seen as easy
IMG_6946 by Troy, on Flickr