Originally Posted by turtle64b (Post 3767230)

Perfect, really anything that gets bigger wires for the fuel pump is what you want!

I put in the system myself and it took maybe 4 hours between a buddy and me (not including the pump assembly modification). The biggest pain was getting the lines routed to the tank haha. Getting frustrated and taking breaks was at least an hour of that.

Smell around. You will definitely smell a fuel leak if you have one! Probably before you see it.

When you punch it, make sure that you go to the floor with the pedal. Sometimes partial throttle response can be iffy.

To me it sounds as though the engine is either getting more air than it thinks (tune should correct that) or its not getting as much fuel as it needs. If the pump is running, you have the wires it needs to run effectively, so you shouldn't have any issues since your injectors and pump are definitely big enough.

Maybe try watching fuel pressure as best you can while you rev the engine to see if you get pressure drop-off when you rev. You could also rig up a camera or something in the engine bay to watch fuel pressure as you drive.

I had a similar issue occur a few months ago after installing the 9lb pulley and a tranny and power steering cooler. The car ran perfect for a week and suddenly starting running lean across the board. Try talking to Seb about going full speed density. It more complicated from a tuning standpoint, but it cleared up my lean issue completely and now we are working on ironing out the rest of my tune.

I did almost every test in the book to verify all the systems on my car are in good working order.

Originally Posted by shadow85 (Post 3767251)

You installed the entire CJM fuel system in 4 hrs??
Charles told me it would take between 5-20 hrs depending on experience and my shop charged me around the 20 hr mark lol


Seb is the one doing my remote tuning actually. I actually thought he was doing a SD tune for me but it turns out it is MAF based. I am upto the 3rd revision but I have just asked him now if it is possible for him to do me a SD tune, waiting on his reply atm.

Im going to purchase a fuel pressure gauge and have that installed soon.

And I rekon I can smell fuel around the car !? But I am on e85 and I am new to e85 so I do not know if it is actually fuel or not lol I have not been in my car for over 6 months before this build completed.

Originally Posted by turtle64b (Post 3767473)

I'm sorry, I've been flying the last two days...

4 hours may be an understatement haha, but it didn't take a long time since everything was already taken apart for the SC and other things install. It was just the one new line and connecting everything.

Bring a friend over or run normal gas in it for a bit maybe? I've never run e85, but I can't imagine it smells too far off of gasoline.

Originally Posted by turtle64b (Post 3767230)

Perfect, really anything that gets bigger wires for the fuel pump is what you want!

I put in the system myself and it took maybe 4 hours between a buddy and me (not including the pump assembly modification). The biggest pain was getting the lines routed to the tank haha. Getting frustrated and taking breaks was at least an hour of that.

Smell around. You will definitely smell a fuel leak if you have one! Probably before you see it.

When you punch it, make sure that you go to the floor with the pedal. Sometimes partial throttle response can be iffy.

To me it sounds as though the engine is either getting more air than it thinks (tune should correct that) or its not getting as much fuel as it needs. If the pump is running, you have the wires it needs to run effectively, so you shouldn't have any issues since your injectors and pump are definitely big enough.

Maybe try watching fuel pressure as best you can while you rev the engine to see if you get pressure drop-off when you rev. You could also rig up a camera or something in the engine bay to watch fuel pressure as you drive.

I had a similar issue occur a few months ago after installing the 9lb pulley and a tranny and power steering cooler. The car ran perfect for a week and suddenly starting running lean across the board. Try talking to Seb about going full speed density. It more complicated from a tuning standpoint, but it cleared up my lean issue completely and now we are working on ironing out the rest of my tune.

I did almost every test in the book to verify all the systems on my car are in good working order.

Originally Posted by shadow85 (Post 3767526)

Nah I its definitly a strong smell!

And I think there is a fuel leak, I can smell fuel from the rear to the hood. And the mini pressure gauge is reading 42psi on idle but the vaccum is still also connected so I don't think tha is the true reading.

But when I switch the car off the pressure drops immediatly to 0 when I think it is still suppose to hold for a short while?

Originally Posted by jax4557 (Post 3767547)

I have the same setup as you but only S1.E, walbro 485, 1150cc injectors, E85. I also have fuel reference set to 42 psi, you should get 1 more psi of fuel per psi of boost. Can check by revving and watching your pressure under the hood if you don't have a gauge in the car. When I shut the car down my pressure stays around 40psi for a few minutes and then around 20 minutes later it will hit 30psi, I have not watched it long enough to see if it goes back to 0psi.

With the immidate 0 PSI on shutdown I would say you have an issue with your regulator, return line on regulator hooked up wrong, or maybe something in the fuel basket but I don't think that could be it..

Originally Posted by shadow85 (Post 3767526)

Nah I its definitly a strong smell!

And I think there is a fuel leak, I can smell fuel from the rear to the hood. And the mini pressure gauge is reading 42psi on idle but the vaccum is still also connected so I don't think tha is the true reading.

But when I switch the car off the pressure drops immediatly to 0 when I think it is still suppose to hold for a short while?

Originally Posted by jax4557 (Post 3767544)

How is the full SD for driveability? I think he tuned me with a mixture of both and it switches to SD at some point.

Originally Posted by turtle64b (Post 3767563)

42psi is low. Also, you 100% have a fuel leak. Pressure should remain in the system long after you turn the car off. Like many hours.

Originally Posted by shadow85 (Post 3767595)

But I only just asked CJM this earlier today, and they said that aftermarket regulators are not designed to hold pressure after the pump is off. Some will hold pressure for a few moments and some will drop to 0 immediatly, and some might drop pressure halfway and take time to bleed the rest out.

Originally Posted by shadow85 (Post 3767595)

But I only just asked CJM this earlier today, and they said that aftermarket regulators are not designed to hold pressure after the pump is off. Some will hold pressure for a few moments and some will drop to 0 immediatly, and some might drop pressure halfway and take time to bleed the rest out.