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learning to tune with the datalogit and want some feedback
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hey i read the 31 page article on how to use the datalogit and i was curious if my maps looked ok, right now my set up is walbro 255 1600 secs 850 primarys fpr stock ports and a t88.
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Most people use the INJ MAP for temp fuel changes to the base map, then recalc to the base map. I never seen anyone use AFR, we use % correction to correct fuel after AFR logging.
For stock ports the timing is very retarded in the higher boost areas, unless you are using a 3 bar map sensor and the higher rows are high boost. But then we do not know much as little engine details were given by you. And if you show IOGT, do it as split so we know what is happening. |
what FC-Datalogit version are you using? that may be a really old version
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More information would be good on this one.
Turbo: T88 (big!) Target Boost Level: ? MAP Sensor: Porting: Stock Injectors: 850/1600 Fuel Pressure at 0 manifold pressure (vac line disconnected from FPR): ? Intake: Cone filter probably? Exhaut: I'm guessing a 3 inch straight pipe but is that correct? Do you have a cat? Extra mods such as water or meth injection: ????? It would also help to post up all the pages of your Datalogit screen after doing two things: 1 - recalc base 2 - check off 'display split' on the IGT map. Thanks, Brian |
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Originally Posted by Wargasm
(Post 10272454)
More information would be good on this one.
Turbo: T88-33D Target Boost Level:15psi MAP Sensor: stockerr Porting: Stock Injectors: 850/1600 Fuel Pressure at 0 manifold pressure (vac line disconnected from FPR): is 40 psi Intake: Cone filter probably screen mesh for now till my re filter comes in the mail thats gonna be modified for a single turbo Exhaut: the down pipe is outlet is a 3 inch and it goes into a ti 3.5 border japan exhaust Do you have a cat, no i have no cats at this time there isnt any aux injection It would also help to post up all the pages of your Datalogit screen after doing two things: 1 - recalc base 2 - check off 'display split' on the IGT map. Thanks, Brian |
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more pics.. also air temp while idleing is 34 and water temp is 85
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bump!
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post the actual .dat file
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Originally Posted by arghx
(Post 10276283)
post the actual .dat file
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If you read down to the bottom of the files types for loading here, you will see ZIP file.
Zip the dat and load it. |
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there is the dat file
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Originally Posted by arghx
(Post 10276283)
post the actual .dat file
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Settings 5:
Too much Injector Overlap. Injector transition still is stock which is wrong even for stock. Settings 4: Still have Inj vs Water T Cool still set for cold start retard. Settings 1: Still using O2 FB and with some strange non stock value of 0.852. IGT is OK but IGL is so retarded for stock ports and look like timing used with a distributor and not electronic timing control. INJ MAP: Run the recalc function to move iot to the base map. Overall the map sucks! Look up what I have posted over the years or PM me about my tuning notes/YAHOO Group. |
Originally Posted by cewrx7r1
(Post 10278990)
Settings 5:
Too much Injector Overlap. Injector transition still is stock which is wrong even for stock. i dont understand about the injector overlap.. i know it has to do with like.. staging the secondaries to come on.. but im not sure.. maybe? tunning is new :blush: Settings 4: Still have Inj vs Water T Cool still set for cold start retard. so that would help with cold starts, like.. for it to idle by itself? Settings 1: Still using O2 FB and with some strange non stock value of 0.852. what should the value be? im going to turn o2 feed back off IGT is OK but IGL is so retarded for stock ports and look like timing used with a distributor and not electronic timing control. seriously.. i wouldnt doubt if they did use a timing lighht when they made sure it was running .. look at the work they did to my intercooler and rad.. it was suppose to be v mount... f&ck. if it was more advanced would you say i would build boost better? i seriously can only get about 6 psi.. INJ MAP: Run the recalc function to move iot to the base map. Overall the map sucks! Look up what I have posted over the years or PM me about my tuning notes/YAHOO Group. |
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modified map... any ideas? still running really rich at idle and the cold start isnt any better
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Hook a wideband up to your datalogit. Verify that the wideband display and the DL display agree. Go to the monitor window and have "Advance" "Aux" and "sensors" selected for this logging session. Logging sensors is normally not necessary. However, the logging speed isn't super important in this case, and knowing which sensors and switches are on could be useful.
With the engine completely cold, begin logging right before you start the car. Start the car and keep logging as it warms up. Then try turning on the electrical load and the A/C if equipped. Rev it up and down a couple times too. Basically gather useful data about the problem so that it can be analyzed. |
Originally Posted by arghx
(Post 10279189)
Hook a wideband up to your datalogit. Verify that the wideband display and the DL display agree. Go to the monitor window and have "Advance" "Aux" and "sensors" selected for this logging session. Logging sensors is normally not necessary. However, the logging speed isn't super important in this case, and knowing which sensors and switches are on could be useful.
With the engine completely cold, begin logging right before you start the car. Start the car and keep logging as it warms up. Then try turning on the electrical load and the A/C if equipped. Rev it up and down a couple times too. Basically gather useful data about the problem so that it can be analyzed. |
Originally Posted by zxrazorxz
(Post 10279301)
i hate having to use the pedal to keep the car running while shes cold..
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mess with the temp map
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Originally Posted by arghx
(Post 10279634)
did you remove the throttlebody coolant hose and fast idle system?
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jdm motors dont have the aws system or the fast idle system... im prettyy sure its called either one?
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Originally Posted by zxrazorxz
(Post 10279793)
jdm motors dont have the aws system or the fast idle system... im prettyy sure its called either one?
They all have the ISC and hot wax rod/fast idle cam system unless removed. We racer types remove the hot wax rod/fast idle cam system to reduce heat in the throttle body, and allow modification to the TB to improve air flow. |
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What do you have P row 20 set at 30,000 PIM ABS which is equal to 28 PSI boost but you have the stock map sensor turned on which only goes to about 17.5 PSI boost?
When you changed IGL, you forgot to redo IGT-SPLT! Improved map attached. You need to fix your map sensor and map ref to match. |
ok.. so i hooked up the wideband to the datalogit and it ran for a minute .. and it died and all it does is cranks now.. so.. im lost :P.. dunno what to do really now
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You could always re-init the map then re-setup the injectors and start from scratch.
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