DEATH_INC wrote:I'm at an absolute loss as to how it can run that long and rev that much with 0 fuel pressure. It makes absolutely no sense at all.
All I can think is the injectors are wide open and it's sucking a shitload of fuel whenever the throttle is closed and it creates a heap of vacuum. But even that doesn't really sound right.
....
This is what i was trying to mention earlier..injector open so stroke drawing fuel in...it is the only way i can see how it can run without fuel pressure...
Yesterday that video was taken with the ECU connected directly to the Battery, Coil, connected to one bolt on earth block, other sensors connected to other bolt on earth block.
Heres the plan, the earth cable running from the battery goes to the block its self (not the plenium). it bolts to battery tray along way and has a smaller gauge (approx 6mm dia.) running back to gaurd also.
I will get a new heavy heavy duty cable to run straight from negative terminal and bolt it directly to lower plenium (not block).
I will also redo every earth from the sensors, coil pack...even though they have a much bigger ground cable running from them already (standard cable was approx 3mm, i have soldered that into a 25amp 4-5mm cable).
The injectors and coil packs are running the original loom still into original plug, then i have the otherside of plug (side that goes to ecu normally) spliced into new loom. Since the injectors only have 7wire plug in total, 1x 12v, 6x grounds that go directly to MS... The coil packs however have 8 wire plug (orignal loom also)... ECU side of plug i have 1x 12v (relay), 1x Ground (ground block on own bolt) and 6x signal which are paired.
I am going to attempt to overkill the earthing problem as much as possible, but am still leaning more towards the fact that i actually have a
ECU tuning problem... I pulled the ecu plug apart and took a photo, this shows how the earths have been done, they have a peice of wire in the plug linking them but then leave through one relativly small gauge wire (main ecu ground)... Although i think it should be as the diagram said, the guy that done this does it for a living and is very knowledgeable so i am not going to question him...
Here is some pictures of some of the tables... ANOTHER PROBLEM I AM NOTICING IS THAT IF THE BATTERY IS EVEN THE SLIGHTEST DOWN (NOT 100%) CHARGE THEN THE PULSE DOESNT GO AND THE GAUGE GOES RED WHILE CRANKING OVER.
My working week has started today so please keep your thoughts coming and i will reply as i can, should get a little bit of time possibly thursday night to spend on truck an try ideas...
Also i cant stress enough that all the problems with the megasquirt are due to my lack of knowledge and the views i express here are my own through frustration due to my
lack of knowledge no other reason...I do not want to give the megasquirt a bad rep or harm in anyway the people providing this products business...The guy i have dealt with has been amazing from emails at 11:30pm at night to 13emails in one day some days... So please do not let this forum at any stage put you off buying a megasquirt system if you are/have been wanting one.
p.s sorry about poor pic of plug this site makes me downgrade my pics, it has a black wire going side ways that is soldered to the groun pins then goes out in 1 earth wire as stated