No start problem

[brandon5]

Alright here's the dealio.

I had the car running without a downpipe and o2 sensor. Everything was running perfect so i decided to take it for a spin around the block. Shifted low, and never put it under boost, ran good, drove good. Decided to give it a bit of gas on the way back, still didn't hit any boost. But it seemed to flood itself and stall out when i let off.

I let it sit for about 3 hours, came back and it started right up.

I decided to come back the next day and build the downpipe, install the o2 sensor. Went to start it and nothing, It wanted to start a couple times but it ended up drenching the plugs. So far, Ive checked spark on all coils, all cylinders are getting fuel, all injectors are clicking when i spin the CAS. But it wont even try to start now, no smoke, nothing.

Any tips? all i changed in one day was having an o2 plugged in. Ive tried starting it with no o2 and no maf. Also messed around with the CAS timing.

Thanks in advance.

[ToroGTS]

Not sure what your level of mods is, but I've had issues trying to get modded rb's (injectors and ecu mapped) to run well with o2 sensor plugged in. I now tune and run exclusively on no o2 signal to ecu and monitoring or logging wideband data. Has caused a no start or stalling in the past. Set base timing with CAS to 15 deg at idle.