Intercoolers and mapping
#3
would it cause overboost?
I would have thought if anything the fuelling would need to be altered to add extra fuel to compensate for the extra airflow etc???
or am i barking up the wrong tree?
I would have thought if anything the fuelling would need to be altered to add extra fuel to compensate for the extra airflow etc???
or am i barking up the wrong tree?
#5
will a bigger intercooler adjust the air flow at the airfilter side then? If so i can see how the maf would compensate?
Otherwise i would have thought its just a case of better cooling of existing pressurised air and hence denser. I would have thought fueling would be leaned out slighly but on a standard "rich" ecu its probably fine. I would be curious/cautios though if the car was already tuned to run leaner.
Cheers
Paul
Otherwise i would have thought its just a case of better cooling of existing pressurised air and hence denser. I would have thought fueling would be leaned out slighly but on a standard "rich" ecu its probably fine. I would be curious/cautios though if the car was already tuned to run leaner.
Cheers
Paul
#7
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I was thinking possibly reduced pressure drop across the intercooler? - the feedback source to the wastegate is usually the compressor outlet before the intercooler, and certainly on Imprezas uprated intercoolers sometimes cause overboost. If the fuelling is MAF based (on the VAG 1.8T?) then the fuelling should cope, but worth checking.
[Edited by john banks - 7/11/2002 11:34:27 PM]
[Edited by john banks - 7/11/2002 11:34:27 PM]
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#9
just for the uninitiated:
MAF = Mass Airflow Sensor
Keyword, Mass, meaning it will measure the airflow regardless of density. Fuel ratio is done on a mass basis, as density of fuel is fairly constant.
Paul
edited for speiling mistakes
[Edited by Pavlo - 7/12/2002 3:06:27 PM]
MAF = Mass Airflow Sensor
Keyword, Mass, meaning it will measure the airflow regardless of density. Fuel ratio is done on a mass basis, as density of fuel is fairly constant.
Paul
edited for speiling mistakes
[Edited by Pavlo - 7/12/2002 3:06:27 PM]
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