Remote Tuning

turtle64b · 06-25-2018, 08:11 PM

Quote:

Originally Posted by shadow85

I bought the Fuel pump relay kit from CJM and have it installed already, is that the same thing you are talking about?

Did you install the CJM fuel system yourself, and how long did it take you?

I have a feeling there might be a fuel leak somewhere? When I look at my Ecutek logs for my WOT attempt, it says injector duty bank 1 is max @ 48%.

Both AFR banks are almost identical aswell as both MAF sensor readings.

There its strange because the AFR avg stays around 14.7 before I hit the accel pedal at cruise speeds but as soon as I try WOT the AFR avg raises, goes lean until I take my foot of the pedal again it goes back to normal, around 14.7.

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.

shadow85 · 06-25-2018, 08:40 PM

Quote:

Originally Posted by turtle64b

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.

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.

turtle64b · 06-26-2018, 06:02 PM

Quote:

Originally Posted by shadow85

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.

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.

Hotrodz · 06-26-2018, 06:44 PM

Quote:

Originally Posted by turtle64b

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.

LOL, e85 has a noticeably different smell than gasoline. He should be able to smell it as it is has relatively strong odor or maybe it is just the corn I burn.

Sent from my SM-G965U using Tapatalk

jax4557 · 06-26-2018, 11:17 PM

Quote:

Originally Posted by turtle64b

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.

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.

turtle64b · 06-27-2018, 04:58 AM

Quote:

Originally Posted by jax4557

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.

The hybrid tune is a little easier (from what I've been told, I am not a tuner) to tune for driveability since you don't have to try to figure out parameters for the car to guess how much air it is getting. At low RPM, the ECU uses the MAFs to see exactly (theoretically) how much air the engine is taking in to adjust that way. Full SD is more time consuming due to the "guessing game" for air across the entire RPM range vice a specific one (i.e. high RPM/load of racing).

Driveability is a function of the tuner, in my opinion. A full SD tune can drive like stock with enough patience. A hybrid tune will get you that faster is all. If you look at your logs when you do WOT pulls, there is the Speed Density Digital (on/off) parameter that should switch "ON" at a predetermined threshold and then back "OFF" when you fall back below the trigger point.

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