350 with 30lb injectors

**ZEDRATED** · 08-20-2012

Thanks. I will do so as soon as I get home from with around 8pm. I have the fuel pressure set at about 44 psi on idle.

**1project2many** · 08-20-2012

With higher pressure the injector flows more fuel. If you fix that number in the chip the engine won't run so rich in open loop. If you can get some info on the injectors it will help determine what the injector constant should be.

**PJG1173** · 08-20-2012

don't forget if you changed injectors you have to think about the injector offset too.

**ZEDRATED** · 08-20-2012

I believe that the injectors are Bosch 30lb but I bought the car used so I will ask the guy.
I will post the Bin and Datalog file soon.
Thanks.

**ZEDRATED** · 08-21-2012

here are the bin`s and logs. the log for one bin is to big to post.

**ZEDRATED** · 08-21-2012

the 6.14.12 original.bin is the custom one for the car

**ZEDRATED** · 08-21-2012

stock chip data log

**ZEDRATED** · 08-21-2012

my data log for the custom chip is 1.02MB and it wont let me upload it here :(

**ZEDRATED** · 08-21-2012

but again the big problem is open loop with this file: 6.14.12 original.bin comparing to the stock bin. The car bogs right out but runs mint in closed loop

**1project2many** · 08-21-2012

What .xdf did you use for Tunerpro? Also, the injector info (part no, or specs, or even "Ford red top" will work) and fuel pressure with key on / engine off.

**ZEDRATED** · 08-21-2012

I believe it is the $6E mask for the .XDF file. I just checked the fuel pressure with key on engine off and it's about 49-50 PSI. As for the injectors, like I said, I bought the car used and tried to contact the previous owner but no reply yet. They are yellow top and I believe either Bosch or from TPIS. But I'm leaning more towards a Bosch injector. I do have an adjustable fuel pressure regulator with a gauge right on the fuel rail.
I've played around with it but no success. Also I didn't try adjusting while in open loop but the pressure right now is about stock.
Thanks.

**1project2many** · 08-21-2012

Those are Accel injectors and they're rated 30 #/hr at 43.5 psi. I realize you're only a few psi off but computers aren't real good with "close enough." If the timing map isn't best for that engine or if the cam is causing reversion then the wrong injector constant will only aggravate the problem.

**ZEDRATED** · 08-21-2012

Isn't fuel pressure measured with the car idling so the vacuum is applied. It is around 44 when it is running.
Or should I set it to 43.5 with the key on engine off?
What do you suggest I do? Did you have a look at the bin file?
How do you know they are accel injectors? Bosch or tpis make yellow injectors to I believe?

**1project2many** · 08-21-2012

Fuel pressure should be 40-44 with key on, engine off.

I looked at the log file for the stock calibration but it would be nice to have the other. Did you try changing the extension and uploading again?

I'm guessing they're Accel. I can't find any specs in any of my 15 year collection of injector specs for a 30# Bosch yellow top injector with high impedance, and TPIS injectors are someone else's injector (usually Bosch) with their name on the packaging. If they're bosch there will be numbers on the side like 0 280 150 XXX. If there's a number like that we can look them up.