Mpi Resistance Feeling
#1
Posted 17 July 2018 - 07:54 AM
I’m thinking this is because of the stage 4 head and Cam etc, could this be a result of the ECU struggling to manage the overflow of fuel? Or is it simply the fuel pump dying?
Cheers
#2
Posted 17 July 2018 - 08:15 AM
#3
Posted 17 July 2018 - 08:18 AM
Cheers
#4
Posted 17 July 2018 - 09:34 AM
#5
Posted 17 July 2018 - 10:12 AM
#6
Posted 17 July 2018 - 10:17 AM
#7
Posted 17 July 2018 - 10:20 AM
#8
Posted 17 July 2018 - 10:28 AM
Hi,
Just fit a standard pump, the more parts you change the less certain you will be if you still have a fault after changing the pump.
Nothing needs upgrading unless the engine has been modified from standard.
Cheers
#9
Posted 17 July 2018 - 11:21 AM
I'd do that as well if you're going to change the pump.
#10
Posted 17 July 2018 - 11:45 AM
#11
Posted 17 July 2018 - 12:23 PM
get that pump changed pronto, and gent the proper fuse in there,
If the pump is killing the fuse then is probably going stiff or locking up momentarily( or there is a blockage as hinited above), which will be probably dropping the fuel pressure and causing your symptoms, upping fuse values can cause stress on the wiring and cause fire risks, obviosly i dont need to point out that this is especially the case when its related to a fuel system part.
#12
Posted 17 July 2018 - 04:27 PM
#13
Posted 18 July 2018 - 12:45 AM
The throttle body won't be helping. Get back to the OEM one.
Why's that? There's probably negligible benefits, but I can't see it being the problem, personally.
#14
Posted 18 July 2018 - 07:06 AM
The throttle body won't be helping. Get back to the OEM one.
Why's that? There's probably negligible benefits, but I can't see it being the problem, personally.
I said it wouldn't be helping, not that it's the causing factor. Larger throttle bodies don't necessarily mean more power or better response. There are a fair few articles on car forums about it. It gets a bit more pertinent when running boosted applications, but on nasp it appears to be more of a balance of Air velocity. I can't remember off the top of my head as I haven't have caffeine yet, but isn't the upgraded throttle body for the Mpi, 48mm?
Edited by Steve220, 18 July 2018 - 07:08 AM.
#15
Posted 19 July 2018 - 08:32 AM
The fuel pump blowing standard fuse but running "OK" on higher fuse means either a faulty pump ( low fuel pressure) or pump having to work too hard ( restricted fuel flow). Is the fuel filter your changing the standard one on the subframe or an additional one in the engine bay? Can anybody confirm if the MPi tank pickup has a gause filter like early tanks? Check pipes and hoses for kinks.
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