AbbeyMS

Adam , also the fuel pressure output isn't good either , MAP output is good thou.

Give me a ring please to discuss , Sat at my desk at the moment.

Okay so the laptop log rate will only be 40HZ , if you log with the ECU it can be up to 1000hz. Ecu to log to ECU with engine off just needs the ECU logging parameters adapted so once the ignition is on it will start logging or you can use a stab of the throttle start to start the logs.

Looking at the logs again, are the log files direct from a laptop log or via the logging memory in the ECU just to know the logging frequencies? The reason I ask and i am sure I have asked this before the RPM and fuel pressure sensor out are terribly unstable, the map sensor signal (output) isnt thou. I find it very hard to understand why the fuel pressure is dropping off even at base boost? can you clarify what base fuel pressure is please , 1- with the pump being run via the test output (so no possible issues with interference etc) 2- with the car running with the boost ID removed from the fuel pressure reg, can these be logged at the highest frequencies (500hz +) please to see whats happening with the outputs please.

using a pair of can lambda's? You can order the correct lambda sensors for the Link Can lambda for replacemnts

so what happens with cars with a throttle cable, been around for years and they do have issues with bad installs or heat from a turbo/fire. What happens when a throttle cable sticks only thing is to turn the car off.

to save me reading up are you running can lambda or analogue input lambda's system? this will help us understand what your trying to sort?

I would be throwing another fuel pump at the car. Thanks

Biggest is best for fuel pump control

what pump are you using?, save me trawling back through the thread

Had a think , voltage at the pump is low, considerable volt drop from battery to fuel pump. You have run a new wire to the fuel pump from the battery you say , was this direct or via a relay? fuel pump, remind me what make? where did you buy the pump from?

Have you changed the fuel filter?

throw that in the bin.

do you still have the over pressure valve still plumbed into fuel system after the fuel pump and tank top? Thanks

So back out with the car last week , Datalogging set up to trigger just on RPM , making sure the log pop up is turned off before pulling the USB, 10 sessions all with data. So next time I think I need to add the old datalog trigger set up and see what happens