fuel cut or sputtering at 3.5 psi

[tstchatch]

ok i have a stock b16a bossted at 4psi to see how is goes. i have an ecu from phearable and my vtec kicks in at 5100rpm, and right then is when my car jolts/jumps. it does it again at 7k. any ideas? im using dsms with the resistor box but i still have my stock fuel pump in... could that be it?

 

[Astheros]

ure stock fuel pump should be ok. i dont think thats it but i dont know for sure what could be.

 

[Matt.]

you're either running too rich or too lean, my guess would be too lean, get the car tuned.

 

[Genuine Rolla]

definitely get the car tuned. That'll explain your problems.

 

[tienr]

its probably too rich if your running off of a basemap. just go get it tuned

 

[tunerfreak87]

you might be maxing out your map sensor too. do you have any check light when this happens and/or does your vtec engage at all?

 

[codyllee]

you might be maxing out your map sensor too. do you have any check light when this happens and/or does your vtec engage at all?

na hes good with the stock map. Like everyone said, get it tuned. Your ignition and fuel maps are out of whack for boost But you do have a basemap for YOUR car though...right?

 

[slambed_civic]

you might be maxing out your map sensor too. do you have any check light when this happens and/or does your vtec engage at all?

stock map can read up to just about 12 psi.

ide get it tuned before driving it again.

 

[ryan89crx]

its because you are on a basemap. get it tuned

 

[mike@synapse]

get a walbro 255 and tune it. basemap is just meant to get you to the tuner, it might have a boost cut set for 4-5psi.

 

[jason_guy_yeah]

oohh, fuel cut on boost = bad idea kaboom

 

[mike@synapse]

boost cut is a safety feature that cuts the ignition for 1-2 seconds as to prevent the motor from reaching boost levels that the tuner decides are unsafe for the application.

 

[djrenok]

nice info

 

[jason_guy_yeah]

boost cut is a safety feature that cuts the ignition for 1-2 seconds as to prevent the motor from reaching boost levels that the tuner decides are unsafe for the application.

my bad, I didn't realize it was ignition cut.