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changed fuel pump, is tuning needed again?
Posted: Tue Oct 28, 2008 9:18 am
by camaroracer1992
I changed from an edelbrock inline fuel pump
http://store.summitracing.com/partdetai ... toview=sku and my fuel pressure was at 50psi at the rail. I changed to a Aeromtovie 700hp efi pump
http://store.summitracing.com/partdetai ... toview=sku and it was 60 psi at the rail so i turned my regulator back to where it read 50 psi at the rail. Is this normal for putting in larger fuel pump with the larger volume, etc? Will i need to do any tuning on the car after this change or not?
Re: changed fuel pump, is tuning needed again?
Posted: Sat Nov 01, 2008 3:09 pm
by adamsvega
NOT UNLESS YOUR OLD PUMP WAS RUNNING OUT AT THE TOP END AND LOOSING FUEL PSI (INJECTOR VOLUME TO MUCH FOR PUMP AT MAX PULSEWIDTH) THEN IT WILL BE WAY FAT UPSTAIRS NOW OR YOU MELTED A BUNCH OF STUFF BEFORE THE PUMP SWAP!
Re: changed fuel pump, is tuning needed again?
Posted: Sat Nov 01, 2008 10:36 pm
by camaroracer1992
just drove the car around for about an hr today, all the data logs off the xfi look good so i am all ready for the track again
Re: changed fuel pump, is tuning needed again?
Posted: Sun Nov 09, 2008 10:56 am
by adamsvega
sounds like you did not need the bigger pump right now .as long as your bypass line is big enough it the fuel psi wont creep up at idle ,your fine. what plans to match the 700 h/p pump ya got going!