Small Starting Up Proplem When Cold

[central coast person]

Hey Guys, this might not be helpful at all but my car does this too and today i tried something different. I didnt let the fuel pump prime and the car started fine.

May have been a slight studder but way better than usual, but my car is stock so don't know if it helps. No mods stock ECU.

Could have just been a fluke but might be worth a shot and it backs what DVS is saying about it being too rich (too much fuel at startup). The Fix who knows lol

Same, the less i prime the pump the better it starts. If i prime it 2-3 times its like a f#ckin steam train. Just chugs and then stalls.

Yeah Sarge, i always get different out comes from it but the best is just starting it as fast as you can. I really think its to do with fuel but i have almost everything new on my car ... only thing is injectors i got them with low KM but im worried they are leaking but you also have changed your so hmmmm

[brad holden]

just thought id put my 2 cents in ive got a r33 gtst 4 door and ive got the same problems as all u guys my car got high flow turbo, exhaust, fmic, and bosch fuel pump. Its still running stock ecu and stock injectors ive just replaced the spark plugs ive also got bigger injectors to go in it im wondering if i put in the bigger injectors am i able to get the stock ecu tuned or do i have to get an aftermarket 1

[DVS JEZ]

your best bet would be to get a z32 or rb20 ecu and then fit a nistune board to be tuned.

[brad holden]

ok but i wouldnt think an rb20 ecu would into an r33

[Moodles2]

Nistune can run any basemap you want, in your case a Z32 or RB20 ecu with Nistune daughterboard inside can load a R33 RB25 basemap. Both these ECUs are direct fit, just that Z32 one has VCT control and the RB20 one doesn't.