I removed all my turbo parts and return the S back to stock but now the S won't start, engine cranks, here is sound file: won't start,
I checked all fuses, it's now running stock ecu and injectors, the fuel pump is still the walbro unit, it's a laskey built engine and head.

please help,

Charlie

 

I'm no expert but with the walbro in there the stock ecu is sending a signal for the stock fuel pump but walbro needs less of a signal to produce the same amount of fuel. Although the FPR should keep it constant. You might be way too rich though. Also your motor is built, what is the CR that may have something to do with it. You may have to run a EMS still. Why did ya go back to NA?

 

Its definitely NOT the fuel pump, that is regulated by the stock FPR.
Did you install the stock map sensor?

 

Yeah you're right, like I said above the fuel pump is regulated by the FPR...unless it goes out like mine just did LOL I forgot to mention that part. I was seeing 11.0 AFR at idle and it would barely start. And MAP sensor wouldn't make a difference. Aftermarket map sensors are just capable of reading higher pressures. Their calibrations aren't that far off of stock. My Hondata one was plug and play...my car started with the 4 Bar sensor on stock computer But yeah it's prob not the FPR or fuel pump but who knows...maybe your ride just misses the turbo so it's too depressed to start up

 

I am using the stock map sensor,
need to remove all turbo part to get CA registration,
I talked to 3 different tuners, all said stock ecu should be able to handle built motor with stock injectors.