73 Challenger getting Edelbrock E-Street EFI with fuel sump system

[71340RT]

Rob I have my vent line hooked to the line that goes back to my tank or the same line my charcoal canister was hooked to which is where Edelbrock said to hook it to. I called Edelbrock today and asked about the sump pump issue and he said the only problem he has heard about was the person had a non stock mechanical fuel pump that put out to much psi and caused the same problem dumping gas out. They e-mailed me a new map for my ECU as I was having a to rich condition at cold start up and he said the new map was the fix for this and I was not the only person that had this problem. The anti glare screen protector put on the tablet is better out in the sun.

[71340RT]

Took the challenger and my cuda to a local car show on Saturday. My wife drove the Challenger with the EFI and said she could not believe how much it drives more like a newer car. It runs better than ever and I have trouble keeping my foot out of it so I may never get better gas mileage and my wife's foot is heavier than mine so she always gets bad mileage. I'm glad that Edelbrock has good tech support and they called me right back when they had my new map tune ready.

[JoeGrapes]

RT, how did you know you had a rich condition? I'm having trouble at start up. It wants to start then stops. I do this about a dozen time before I get it to start. I turn the key until I hear the pump priming, then off and then back on to start, the motor coughs but does not start until I do this a bunch of times. I keep fiddling with the tablet and even tried to do a reset and start over. When I drive the car it runs fine. 

[71340RT]

Sorry for the slow reply but I have been in Colorado for a visit with my mom. My challenger always started right up but you could here it loading up like a carburetor right after start up. I always let the fuel pump prime and never turn the key back off I just start it up. I need to drive mine this weekend as it has been 2 weeks since I drove it.

[ShelbyDogg]

I don't your system to know what setting that you have to play with. With my other systems, I play with the cold enrichment settings and the idle A/F ratio. Cold startup tuning is only available once a day. You have to watch your A/F and see what your engine likes when cold. Some of my systems let you add a specified amount of fuel depending on temp, as it warms up, then it tapers off to my set Idle A/F. Is there a cold enrichment setting to adjust?

[JoeGrapes]

I figured out what my hard starting problem was. My ignition switch was bad. Now it starts up fine and runs good but when I check the plugs they are black. The system has a sort of a pump squirt setting that is suppose to help cure any hesitation but so far I have none. It also has a Idle air fuel, cruise air fuel and wide open air fuel setting that I can set a target air fuel ratio. I'll drive it longer and keep an eye on the plugs. I might have to change heat range. But now I'm of to sunny Florida for a little beach vacation so I won't be able to play with the car until next month.

[RCCDrew]

Any new news on these efi setups?

[71340RT]

Any new news on these efi setups?

  I really like the EFI but it is not without some issues. I had to put a fuel pressure regulator from my mechanical fuel pump to the sump as the pump was letting to much pressure go to the sump causing the electrical plug to pop out. I also had to run a direct wire from my alternator to my starter relay. The EFI takes more juice to run than I thought and was making my bulkhead connector get hot and breaking connection which will cause the engine to die if the voltage drops to low. The next issue this caused was the amp gauge now read low as not enough current was going through it for the amp gauge to read correct. I now have a volt gauge in it's place so I can monitor my charging system. I really like the way it starts right up and the throttle response is much better than my thermoquad carburetor ever was. I hope to drive it more next season so I can get a real idea of how good this system really is as I only put around 1,500 miles on it this last season.

[RCCDrew]

Sounds good. I think I will try to go with a more conventional pump/tank setup to make it easier.
How does your engine sound compared to when it had the carb, at idle. One of the things I read said that they wish they had went with a bigger cam after putting on fuel injection (mpfi) since it made the car sound much more docile at idle. Everyone wants to keep the musclecar sound.

[JoeGrapes]

I haven't had any of the fuel pump or voltage problems 71340RT had. It starts up and runs fine. Absolutely no bogging, hesitation or flat spots. It is running a little rich so I need to sort that out. I might have a leak in the header ahead of the O2 sensor or may my timing is not advanced enough. Driving the car with the EFI is far better than with the carb. As for the sound, I don't notice and difference.

[71340RT]

Sounds good. I think I will try to go with a more conventional pump/tank setup to make it easier.
How does your engine sound compared to when it had the carb, at idle. One of the things I read said that they wish they had went with a bigger cam after putting on fuel injection (mpfi) since it made the car sound much more docile at idle. Everyone wants to keep the musclecar sound.

  I have not noticed a real change in the sound at idle. It is very sensitive to timing and has a better throttle response than I ever thought it would. I really like it and hope I can get more mileage out of it next year when I get it back out after winter as I'm going to taller tires and maybe a gear change or overdrive transmission.

[JoeGrapes]

71340RT, I made some changes to my E-Street system. I took all the electronics off the firewall and mounted them in the glove box. I ran the cables thru a rubber grommet thru the firewall down behind the motor. It really cleaned up the engine compartment and worked out great. Thought you might be interested.

[71340RT]

71340RT, I made some changes to my E-Street system. I took all the electronics off the firewall and mounted them in the glove box. I ran the cables thru a rubber grommet thru the firewall down behind the motor. It really cleaned up the engine compartment and worked out great. Thought you might be interested.

That looks great I may have to move mine like that.

[Katfish]

Nice job, got any pics of where it comes thru the firewall?

[JoeGrapes]

I took the wiring harness apart and wrapped the wires so all the connectors came out at the same place. I had to cut the hole in the firewall big enough so the plugs would fit and feed the harness thru from the interior. Then I made the rubber grommet but since I had the room on the grommet I also ran the lines from my aftermarket Temp, Vacuum and Oil Pressure gauges thru the same cutout. I also changed the location of the fuel filter and used a 90 deg fuel fitting on the throttle body so I could route the fuel line better.