Hondanickx
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- 1998 civic hatch , 2018 civic sedan 1.5T
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So today i tested a MAF housing i made .I know this isn't just a pipe and i covered all the ins and outs of the oem maf housing and designed something similar but a little bigger.Nothing extreme here.
I used a obd tool to monitor the Fuel trims and AFR values with the Torque app on my phone.
After installing the new MAF housing and starting up the car the car idles fine and initial STFT is 7-8%.LTFT is still in stock values and is -7% .( Oem Euro spec ecu's runs very rich) I played with the gas a little and let it sit for 10 minutes to see if the fuel trims where ok for a little test drive.In the test run i drove part throttle fuel trims where fine STFT 6-7% and LTFT where going down already -6%.After that i tried some quick full throttle runs of 2 seconds and noticed the STFT imidiatly jumped up to 16% sometimes even 20%.In part throttle the fuel trims did fine. LTFT where still dropping and by the time i was back home dropped to -3% .
I stopped testing the MAF housing after that .
Now my question is would the MAF design be bad and way off to cause the fuel trims to go that high in full throttle?Or is this just the increase in air that needs to be tuned for?
I think the MAF design is good because it runs fine in part throttle but i'm not a expert in this.
Is there a way to notice this ?Any experts have some info on this?
Ow yeah after i installed back the OEM airbox and started the car back up i got a christmas tree lights going on with engine light ,acc light ,brake hold ,traction control and several other lights coming on .The car runs and drives fine ,.Fault code gave a P0113 which is iat sensor too high.
I checked wiring and MAF sensor reads the temp just fine.Not sure if this has anything to do with the testing of the MAF housing ?
I used a obd tool to monitor the Fuel trims and AFR values with the Torque app on my phone.
After installing the new MAF housing and starting up the car the car idles fine and initial STFT is 7-8%.LTFT is still in stock values and is -7% .( Oem Euro spec ecu's runs very rich) I played with the gas a little and let it sit for 10 minutes to see if the fuel trims where ok for a little test drive.In the test run i drove part throttle fuel trims where fine STFT 6-7% and LTFT where going down already -6%.After that i tried some quick full throttle runs of 2 seconds and noticed the STFT imidiatly jumped up to 16% sometimes even 20%.In part throttle the fuel trims did fine. LTFT where still dropping and by the time i was back home dropped to -3% .
I stopped testing the MAF housing after that .
Now my question is would the MAF design be bad and way off to cause the fuel trims to go that high in full throttle?Or is this just the increase in air that needs to be tuned for?
I think the MAF design is good because it runs fine in part throttle but i'm not a expert in this.
Is there a way to notice this ?Any experts have some info on this?
Ow yeah after i installed back the OEM airbox and started the car back up i got a christmas tree lights going on with engine light ,acc light ,brake hold ,traction control and several other lights coming on .The car runs and drives fine ,.Fault code gave a P0113 which is iat sensor too high.
I checked wiring and MAF sensor reads the temp just fine.Not sure if this has anything to do with the testing of the MAF housing ?
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