Fuel Pump

ihadmail · 08-03-2009, 08:30 AM

I am adding a 255lph fuel pump to my 05 STi in preparation for larger injectors and turbo in the future. Will I see any real changes, or need to make any corrections due to JUST the fuel pump? I already planned to log it and try to see if anything changed, but I may not log the proper parameters without some guidance.

Current mods are:
-Perrin FMIC
-K&N Typhoon
-Cobb light pulley
-IXIZ A/O Sep
-Port/Polish/Ceramic stock elbows
-APS 3.5" turbo back

Thanks for any assistance, and I did read the tuning guide (quite a few times) and tried to search for my question to no avail.

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the suicidal eggroll · 08-03-2009, 11:34 AM

No need to tune for a fuel pump unless you were previously dyno tuned and the tuner hacked the MAF scaling or target AFR to compensate for a weak fuel pump.

ihadmail · 08-03-2009, 01:13 PM

Sweet, that's what I was thinking. I just wanted to confirm before something screwy started happening and I couldn't find where/why in my logs. Thanks for the straight answer.

08-03-2009, 08:30 AM	#1
ihadmail Scooby Specialist Member#: 159315 Join Date: Sep 2007 Chapter/Region: South East Location: Lexington, SC / Augusta, GA Vehicle: 2013 Camry SE Classic Silver Metallic	Fuel Pump I am adding a 255lph fuel pump to my 05 STi in preparation for larger injectors and turbo in the future. Will I see any real changes, or need to make any corrections due to JUST the fuel pump? I already planned to log it and try to see if anything changed, but I may not log the proper parameters without some guidance. Current mods are: -Perrin FMIC -K&N Typhoon -Cobb light pulley -IXIZ A/O Sep -Port/Polish/Ceramic stock elbows -APS 3.5" turbo back Thanks for any assistance, and I did read the tuning guide (quite a few times) and tried to search for my question to no avail. * Registered users of the site do not see these ads.

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08-03-2009, 11:34 AM	#2
the suicidal eggroll NASIOC Supporter Member#: 51961 Join Date: Jan 2004 Chapter/Region: RMIC Location: Broomfield, CO Vehicle: 2005 STi 2012 WRX	No need to tune for a fuel pump unless you were previously dyno tuned and the tuner hacked the MAF scaling or target AFR to compensate for a weak fuel pump.

08-03-2009, 01:13 PM	#3
ihadmail Scooby Specialist Member#: 159315 Join Date: Sep 2007 Chapter/Region: South East Location: Lexington, SC / Augusta, GA Vehicle: 2013 Camry SE Classic Silver Metallic	Sweet, that's what I was thinking. I just wanted to confirm before something screwy started happening and I couldn't find where/why in my logs. Thanks for the straight answer.