Posted: Thu Oct 09, 2008 10:33 am
At what rpm does the voltage to the feul pump change, 5000? Ek dink jou pomp is in sy p**s.
Nissan 200SX Club - South Africa
Forum for owners of the Nissan 200SX in South Africa
https://forum.sxoc.co.za/
Stumble at high revs
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Posted: Thu Oct 09, 2008 10:35 am
why do u say that?
Posted: Thu Oct 09, 2008 10:43 am
Im to lazy to read so im thum sucking here but i think that somewhere in you revband the ecu send higher voltage to your fuelpump and also change the vacuum via the acc valve to your fpr in order to juice a bit more but if the voltage change doesnt make the pump deliver more fuel pressure you might have this affect due to starvation. Maybe VC or someone knowing the car better can correct me on this.
1
Posted: Thu Oct 09, 2008 10:45 am
when it cums 2 electronica im totaly lost
Posted: Fri Oct 10, 2008 12:32 pm
hey reecez i got my walbro today so you should be geting yours soon
Posted: Wed Oct 15, 2008 5:28 pm
hey dude, got mine on monday afternoon, our cleaner stacked it with my magazines, so I only found it tuesday morning 
. Gary's dad fitted for me today. can't run at the moment cos the road is wet. kinda feels like the power delivery is better tho. don't know if i'm imagining kW here. guys, what would a walbro 255 do to power delivery?
. Gary's dad fitted for me today. can't run at the moment cos the road is wet. kinda feels like the power delivery is better tho. don't know if i'm imagining kW here. guys, what would a walbro 255 do to power delivery?Posted: Wed Oct 15, 2008 7:39 pm
i felt a big difference on my std sx. car was doing 99kw then after pump was back to the stock 126kwReeceZ wrote:hey dude, got mine on monday afternoon, our cleaner stacked it with my magazines, so I only found it tuesday morning
Posted: Wed Oct 15, 2008 8:15 pm
no ways a fuel pump can give you 27kw thats insane i felt no power diff when fitting my pump its all in the mind and reecez i still find it stumbling at bout 5ooorpm and full boost im totaly befuddled by thisrat wrote:i felt a big difference on my std sx. car was doing 99kw then after pump was back to the stock 126kwReeceZ wrote:hey dude, got mine on monday afternoon, our cleaner stacked it with my magazines, so I only found it tuesday morning
Posted: Wed Oct 15, 2008 8:20 pm
my std pump was failing
Posted: Wed Oct 15, 2008 8:25 pm
Sorry to say but yes it can.poizen wrote:no ways a fuel pump can give you 27kw thats insane i felt no power diff when fitting my pump its all in the mind and reecez i still find it stumbling at bout 5ooorpm and full boost im totaly befuddled by thisrat wrote:i felt a big difference on my std sx. car was doing 99kw then after pump was back to the stock 126kwReeceZ wrote:hey dude, got mine on monday afternoon, our cleaner stacked it with my magazines, so I only found it tuesday morning
Happened to me too. (My previous car.)
a high performance engine can only produce power = to the amount of A/F it receives. Take it like this, if I put a FPR on your car and set it to 1 bar your car wont go very well, on a dyne the max power figures would be down in the dumps. But let it get the right amount of fuel and bobs your uncle!
Posted: Wed Oct 15, 2008 11:19 pm
I tell u what, i did go abit hooligan on the gas pedal, and fook me sideways, i almost spun the car, oh yah, i was on a str8 road
Posted: Wed Oct 15, 2008 11:31 pm
although, i still have this feeling its gona stumble again. my IC and the piping are not exactly performance friendly. my hot and cold pipes are squashed against my bonnet, so i think i need ot get that sorted to be rid of this prob
Posted: Thu Oct 16, 2008 7:16 am
I dont think it would push up the power alot if the car is running fine but then we wont change our pumps. Think it gives back what youve lots with the f**ked pump and a bonus for being nice. What did it di to your feul consumption is what i want to know?
Posted: Thu Oct 16, 2008 7:18 am
wonders for mine
Posted: Thu Oct 16, 2008 2:02 pm
I don't really watch fuel consumption, cos I only use the car on a saturday, i just fill bout r100 for the day. i'm going for a dicktator after i fit my IC and piping so I'll probably have a better idea then.