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TBI Fuel Injection Installation

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Bob, why the close location of the regulator?

Fluid engineering wise it really shouldn't matter, If the fluid supply lines are large enough.

Only reason I can see to have it mounted so close to the injectors, might be that the supply hoses are too small and regulator location needed to overcome possible pulsing...
 
Rick got back to me and stressed how critical it is that the fuel lines be properly plumbed and sized. That's why he includes the correct hoses and fittings with the kit. The braided hoses with AN fittings are more restrictive then the brass hose barbs that come with the kit. They'll be OK at idle but not enough flow for acceleration. So Dan, that's why you're running higher pressure and larger injectors. No one evidently knew you had changed from the hoses supplied. BTW, the regulator actually has 3 outputs but one is adequate when using the correct hose. However, Rick's now going to recommend using two outlets and either 5/16" rubber hose or 3/8" braided hose. In any case the regulator should ideally be within 24" of the injectors. When I did mine, John Wilson wanted it 18" but he was supplying a different pump and regulator. As to a fluctuating pressure gauge, the most likely reasons are:
1) Low fuel level in the tank causing the pump to pick up air.
2) Dirty fuel filter.
3) Fuel lines too small or restricted. A collapsed or kinked suction hose from the tank.
4) Fuel return line not properly plumbed to tank.
5) Fuel pump improperly located- must be near tank and below it’s level.

And I have to tell you that I spent the most time on my installation running the fuel lines. I redid them a few times to avoid any sharp bends on BOTH the supply lines and the return line. What I thought would be a simple task turned out to be a PITA. I also replaced all of the short rubber hose sections on the existing fuel lines, blew out the steel lines and had my tank professionally purged, cleaned and tested. I did not want to have any fuel delivery OR fuel return problems.

I even sent Rick pictures as I went along to make sure I was doing it correctly. Dan and Elysium....you might want to consider taking pictures to help with any future troubleshooting. And you should both do a data logging session. It's part of the kit price and it tells them exactly what's going on with the car. I did 3 of them the first year and got 2 new chip profiles based on what they saw.

Ron.....I don't know the engineering reasons for the regulator location other then to ensure proper fuel delivery at the recommended pressure for the injectors.
 
Okay Bob, I'll check it out in November and thanks for the advice. I see now that the fuel lines are very important to the job and I will check all of the above before contacting anybody at Advanced. I did do one data logging, but when I tied to do another right before I left, I couldn't get any data. I have no idea what happened, ad need to trace that down as well. I was going to take pictures of everything before I left, but I was also selling the TR7 and had that disaster that distracted me from getting that done.
 
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