fst100

iTrader: (5)

heres one, uploading a few more. is the "control module voltage" the correct parameter?

fst100

iTrader: (5)

pic 2 of same run. next one is from another run

fst100

iTrader: (5)

ok the other run i did not include the voltage

fst100

iTrader: (5)

a different run w/o voltage parameter unfortunately

JimMueller

iTrader: (9)

Voltage is fine, curious about the commanded EQR changing between 6036RPM and 6048RPM. In my '98 calibration, the PE EQ Ration columns are in 400RPM increments. These scans were all with the same calibration?

First photo, 5854RPM, EQ ratio commanded 0.89, AFR transform reading lean at 13.66, voltage 13.60V
Second photo, 6048RPM, EQ ratio commanded 0.89, AFR transform reading lean at 13.66, voltage 13.60
Last photo, 6036RPM, EQ Ratio commanded 0.87, AFR transform reading rich at 12.07, no voltage

fst100

iTrader: (5)

last/3rd pic was from a different day and some small tweaks to the MAF frequency.

fst100

iTrader: (5)

that last run I fattened up the MAF to see if it'd help. it somewhat did but it totally bumped up the 9K curve which isn't supposed to be like that. it caused the 8K to go from 12.x to 11.x to transition over to the 9K to compensate the leaning out issue.

after this nor'easter flies through i'm gonna plan another run with a fuel pressure gauge and logging it. I'm thinking about swapping back to the stock injectors, should I do that as well?

ddnspider

iTrader: (26)

Are you at a high elevation? Looks like theres an intake restriction from the MAP. Agree voltage looks good. Now just need that fuel pressure

fst100

iTrader: (5)

I'm prolly about 350-400 feet above sea level according to googling my location.

edit-the fuel pressure reading wont be til prolly next week after this nor'easter comes and goes. I did change my fuel filter last night in the mean time. blew through it and felt no restrictions as it felt the same as the new one.

ddnspider

iTrader: (26)

Thats not bad. Typically you should see 99-100kPa. When it gets down to 97 or less its typically an intake tract restriction.

fst100

iTrader: (5)

thanks for the verification on the kPa. is the IPW correct for when running 42.5lb injectors or are they too low?

edit-I also noticed the TPS bar on the gauge display isn't registering? the gauge display I left mostly default and just removed the O2 bars as I wasn't using them.

ddnspider

iTrader: (26)

The TPS bar isn't registering because it doesn't look like you have that PID selected on the list on the left, at least in the last pic I looked at. It's hard to tell what the ipw should be without alot of math. I remember seeing this chart, but think its for stock injectors:

fst100

iTrader: (5)

i guess regardless of size of injectors, the chart is a good indicator to gauge if its being maxxed out or not? if that's true then I'm only using about 50% IDC.

ddnspider

iTrader: (26)

I believe that is true.

fst100

iTrader: (5)

Update. Hooked up the fuel pressure gauge and did a few pulls. Definitely losing fuel pressure above 75-80% throttle. Steady pressure at idle and cruise at 55psi but once i romp on it the pressure drops to steady 32psi which was around 13.5afr. Here's what i swapped thus far in this thread leading up to hooking up the fuel pressure gauge:
Originally swapped to gtp injectors to run e85 and that was when i noticed the lean issue
Swapped out the used (i know ill get flack for it) walbro 255lph fuel pump back to stock
Replaced the maf with new one but since no change, swapped the original back in
Replaced fuel filter
Installed caspers easy performance fuel pump relay harness

I'm out of ideas. Should i get a new stock fuel pump from parts store or get the racetronix fuel pump upgrade kit?

fst100

iTrader: (5)

Is it possible both of the fuel pressure regulator in the oem/stock and walbro fuel pumps went bad? Is it worth replacing it? I did the trap door so itd be easier than dropping the tank.

ddnspider

iTrader: (26)

I've never seen a stock regulator fail without a huge pump behind it. Have you confirmed steady voltage at the pump during a pull? Are you saying youre running e85? I doubt a stock pump is good for 400whp on e85. Not sure on injectors.

fst100

iTrader: (5)

When i swapped back to the stock injectors i swapped back to 93 octane. Has about 2 tanks of 93oct since

fst100

iTrader: (5)

I unfortunately did not get a log of the run when i how'd up the gauge because the hp tuner errored out whenever i started to record. I imagine it was like the prior scans where it were around 13.5v

ddnspider

iTrader: (26)

Stock injectors likely won't handle your cam. My F13 was smaller and I was almost maxxing the DC. Have you tried the gtp injectors on 93 only?