Thread: help, b14 avenir swap

avenir w10 swap

JWT ecu (tuned for b14 MAF, 370cc)

370cc Injectors
Walbro 255
Stock B14 DE FPR
Stock B14 MAF
FMIC
2.25" Hot Side
2.50: Cold Side
3" DP

car starts fine, timing is correct.

only issues i have wit the car is when i drive the car and while accelerating while my foot is on the throttle, i lose power(spark i believe) around 3k rpm, and to get the car back going again i need release the throttle and most the time it will do the same thing. but if im heavy on the throttle and constantly accelerating it wont do that. at a stand still just revving if i rev to 3k RPM it'll rev to 3k then go down to about 1800-2300 RPM and back to 3k.

if i disconnect the TPS the problem goes away.

any idea why this happens?

i will try and put video up of what it does as soon as i can.

all help is very appreciated

thanks
Mark

ideas?

sounds like it's in safe mode or your detonating. Which means your boost is too high pretty much. how much boost are you running? and did you get new spark plugs and gap them at right?

Bad ground on the maf. Tps is set wrong. Should be set to .48v. I would also rest the stored values on the ecu for the tps. It does sound like the car is in limp mode.

what are your plug gaps set at?

i do have new plugs, did not gap them



imma check the TPS and Ground on the MAF as soon as i can.

what do you mean by "I would also rest the stored values on the ecu for the tps"



the gap it is outta the box

how much boost are you running. you might want to gap your plugs down and see if it helps. i doubt its your plugs but its a possibility if your plug gaps are too large

First gap the plugs the stock gap is too large. Every stock ecu stores information about the tps and several other sensors. this data is stored over time and when your ecu is reprogrammed the data does not match. This will cause hesitation and idle issues. I use nissan data scan to clear the values and force the ecu into relearn mode. you can do this with out nissan data scan by 1) turn on the car and allow it to warm up. 2) with the car warmed up unplug the tps for 30 sec (note the idle should go up). 3) plug the tps back in. This does not always work and this is why I use the nissan data scan software.

well i ran an OBD2 scan on my car got the following codes

not sure if my codes are correct(please correct me if i am wrong, thanks)

p0115- Coolant Temp Sensor
p0120- TPS
p0125- Coolant Temp Sensor
p0135- Font o2 Sensor Heater
p0335- Crank Position Sensor
p0505- IACV
p1400- EGR

EGR is all gone cause its an Avenir swap
Crank Position is not connected cause i am using a b13 tranny

did you get the car running 100% ?