Hello all,
Let me start with my set up. 2000 integra gsr, jdm b18c1 engine, t3/t4 turbo, gm 3bar map, 750cc inj, n75 boost valve, ngk 7 copper plugs, walboro 255, aem wideband o2, aem series 2 ems tuned by bisimoto at 9 psi in (2015). everything else relevant is stock. Story is got pulled over late 2015 for hid's and left with an emissions ticket and state ref. So I pulled the motor put my stock usdm b18c1 in passed everything. Drove stock for awhile. fast forward to now. Put my jdm b18c1 back in the car and drove it stock for a couple months.
Few days ago i put the turbo and everything else back on and now the car will start for a few seconds, bog and stall. checked fuel pump and injectors all good. triple checked my wiring to the wideband o2 and map all is good. checked spark all good. checked tune and its the same tune as i had before when the car ran perfect. I don't understand how the car wont run when everything is the same when it was running. It starts up, bogs and stalls within seconds. So I put my stock map sensor on and started car with same issue. put stock o2 sensor on started car and same issue. put my stock ecu in and the car starts right up and idles effortlessly. does this mean the aem ems is bad? wideband or map sensor bad?
Car is back to NA again since I drive it to work. I'm really missing boost right now

 

Sounds like you need to get the Car back to the Tuner sense you messed everything up. Sounds like you might be 180 out somewhere...

 

Sounds like you didn't put the right injectors back in.

Changing the map sensor or injectors causes massive changes to what the ECU is controlling. 1% duty cycle on stock 240cc injectors is a lot less fuel than 1% duty on 750cc.

Injectors and map definitely have to be the same as was tuned for

 

I know my map is good, my wide band o2 is good, and I know everything is connected correctly. My question now is when I go to start the car my injector pulse width is 7.37ms. Is this normal? I know when the car is running right the pulse width at idle is +-1.1ms. I have AUS 750cc injectors.When I get the car started for a second and give it gas my injector pulse width shoots up to +-19.25ms and car stalls out. After trying to start the car.

 

Something messed up with ur tune dude.

Or make sure the MAP sensor is hooked up correctly cuz, how is it making 0.6psi while cranking?

 

I agree, it has to be the tune or the actual ems. I just dont understand how when i never touched anything in the tune. Even loaded up 2 previous tunes that were perfect tunes with my t3-60 turbo on there and still same issue.

 

7.5ms PW is normal for startup. That's initial crank pulse fuel. Now if you see much more then 2ms at idle fully warmed up your tune is junk.
Did you remove your Distributor and reinstall install. Sounds like you may need to resync your cam and crank inputs..

Also 12.0afr is bad KOEO. AEM Wideband should read full lean after about 30seconds of heat up.. I don't like the 10 deg ign tho. 0-5 works better.
19ms fuel pulse could be normal if the car is dead cold and it only happened briefly when you stabbed the throttle.

You need to put a timing light on it and verify sync or get it to tuner so he can fix the more then likely input problem your having.

 

Thank you for the info. I'll look into that can post the results.

 

Wooh yea your Map sensor is not reading properly... I don't like how a lot of that reads now that i'm actually looking at it. Hope ya got it fixed