Did some logging

[Boss_302]

I did some data logging on the mach 1 and i was wondering if you guys would be willing to look at it and make sure everything looks good.

http://www.mediafire.com/?mcab4wzwcmg

http://www.mediafire.com/?gfjjhbtecj3

http://www.mediafire.com/?z4zzwh2welt

[Shinigami]

they dont look bad. jsut a couple things:
1. Why didn't you log the Knock sensors or borderline spark?
2. Why did you stop you runs at just over 6k?
It looks like you timing is makeing at 22.5* which might mean your knock sensors are pulling out 0.5 degree.

[Boss_302]

Originally Posted by Shinigami

they dont look bad. jsut a couple things:
1. Why didn't you log the Knock sensors or borderline spark?
2. Why did you stop you runs at just over 6k?
It looks like you timing is makeing at 22.5* which might mean your knock sensors are pulling out 0.5 degree.

Sorry I have an 03 cobra motor in my car is why i stopped at 6k and i couldnt didnt know which setting to have and one i found didnt say borderline spark. If you could send me a config file of everything i need to data log i will do it again.

[lxh89]

I looked through the datalog...looks like your tuner made WOT fueling very rich - 10.4:1 to be exact based on Short Term Fuel Trims commanded in Open Loop.

Did you reuse the cobra computer + harness? If so, you should datalog "Downstream ACT" to see IAT2 temperatures which are blower discharge temperatures. Your data logs look like IAT1 or pre-blower temperatures. Thats pretty irrevelant. If not using the cobra harness, suggest you relocate the IAT1 sensor to the blower location to measure discharge temps then have the tuner modify Retard vs ACT.

Your fuel pump duty cycle is a hair over 97%. This is running the margins thin, but given the rich A/F, you could probably have WOT fueling leaned out to 11.5:1 and gain 10% duty cycle and pick up power to boot. Also, as is common, your battery voltage declines at higher rpms. This also impacts fuel delivery. A BAP would solve this problem easily and support up to 600 to the tires with stock 03 cobra pumps.

How much boost are you seeing? The spark timing looks to be near stock or perhaps canned timing for a stock cobra from SCT. Based on Spark source, there are periods where its using the MBT table since the command spark is lower than what's in the Borderline Knock table.

Also, your MAF is 93% utilized based on MAF counts. IF its a stock MAF, you don't have much headroom. If its an SCT, you are ok.

Tony

[Boss_302]

Originally Posted by lxh89

I looked through the datalog...looks like your tuner made WOT fueling very rich - 10.4:1 to be exact based on Short Term Fuel Trims commanded in Open Loop.

Did you reuse the cobra computer + harness? If so, you should datalog "Downstream ACT" to see IAT2 temperatures which are blower discharge temperatures. Your data logs look like IAT1 or pre-blower temperatures. Thats pretty irrevelant. If not using the cobra harness, suggest you relocate the IAT1 sensor to the blower location to measure discharge temps then have the tuner modify Retard vs ACT.

Your fuel pump duty cycle is a hair over 97%. This is running the margins thin, but given the rich A/F, you could probably have WOT fueling leaned out to 11.5:1 and gain 10% duty cycle and pick up power to boot. Also, as is common, your battery voltage declines at higher rpms. This also impacts fuel delivery. A BAP would solve this problem easily and support up to 600 to the tires with stock 03 cobra pumps.

How much boost are you seeing? The spark timing looks to be near stock or perhaps canned timing for a stock cobra from SCT. Based on Spark source, there are periods where its using the MBT table since the command spark is lower than what's in the Borderline Knock table.

Also, your MAF is 93% utilized based on MAF counts. IF its a stock MAF, you don't have much headroom. If its an SCT, you are ok.

Tony

Well i used the cobra computer and engine wirring. Looks like i better get this to a tunner before i mess it up. If you have live wire can you make me a configuration file that will have everything set up for me to data log?
I have the stock MAF, Cobra pumps, I dont know how much boost for sure im guessing 10-13 PSI with the 3 inch upper pulley.

[lxh89]

Try logging these parameters going forward:

battery_voltage
coolant_temp
DOWNSTREAM_ACT
fp_duty_cycle
FPUMP_ACT_VOLTS
FPUMP_FLOW_RATE
FPUMP_VOLTS_TAB
FUEL_PW_CLKTIC1
FUEL_PW_CLKTIC2
inj_press_drop
intake_air_temp
load
maf_counts
map
OPEN_LOOP_FLAG
rpm
RTLS_VTAB_X_INP
RTLS_VTAB_Y_INP
short_term_trim_b1
short_term_trim_b2
spark
spark source
thrt_pos_absolute
vehicle_speed

Tony

[Boss_302]

Originally Posted by lxh89

Try logging these parameters going forward:

battery_voltage
coolant_temp
DOWNSTREAM_ACT
fp_duty_cycle
FPUMP_ACT_VOLTS
FPUMP_FLOW_RATE
FPUMP_VOLTS_TAB
FUEL_PW_CLKTIC1
FUEL_PW_CLKTIC2
inj_press_drop
intake_air_temp
load
maf_counts
map
OPEN_LOOP_FLAG
rpm
RTLS_VTAB_X_INP
RTLS_VTAB_Y_INP
short_term_trim_b1
short_term_trim_b2
spark
spark source
thrt_pos_absolute
vehicle_speed

Tony

ok thank you i will do that next once i get my exhaust leak fixed now.