bcool

Running the turbo n/a seutp, about 7 degrees retarded off base, heres the thing though, i'm pushing just about all the correction i can get out of the AFC at around 6-7K i'm at 44% correction with the n/a ecu, FD fuel pump, and 550CC injectors. I'm gonna have to bump it up to around 50% since i'm hit a 12:1 at around 6-7K, now i really wanna finish the next tune off at 10 PSI but i dont think baseing it off the n/a map will allow that sort of correction. Any ideas on what i can do?

bcool

this is crap, i cant even push enough fuel out on 50% correction at 6K-7K, i'm pushing into the 12:1 a/f's in that area, ghey.

SureShot

12:1 is great, but as you see you're at the limit of the 550's

Other options are a rising rate fuel pressure regulator and/or 720 secondaries.

It this a TMIC or FMIC setup?

bcool

FMIC, i shouldnt be at the max of the 550's at 4-5PSI, i'm thinking i might have a drop in fuel pressure. I'm gonna see if it'll make a difference when i run w/o my fuel filter for test run (I dont know how olde it is so it may be due for replacement, it would be a good check though..

bcool

NVM the motor blew up

SureShot

My first guess - low voltage from a weak connection at the fuel pump.



.

ViperDude152

LoL that sucks. To much boost?

bcool

like 4psi, so no, blew up upon lauch at the track. I dont even think i was in boost, my timing was 7 degrees retarded from base, and i had a good AFR at the time. So maybe the motor was just weak, had 186K on it. Another thing that might have happened and i'm pretty sure i'm a complete idiot for doing this, but one of our rotary guys had pointed out that i had no plug on the air temp sensor, so me being the idiot i am found and pluged the temp sensor plug into the TII temp sensor on the elbow, i'm thinking i fucked myself right before the run by doing this. It may have thrown my n/a fuel maps way off when i did this. On the way home, i was getting into boost just beating the **** out of my recently blown motor and i was noticing AFR's in the 13.6 range in boost. so i'm thinking that my n/a ecu thrown massive corrections in for its newly found air temperature readings. Eh, its cool though, onto bigger and better projects with the car now.

SureShot

(It was the 186K miles)