TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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since i finally got the z back from the shop, i noticed that the fuel pump has a whining noise. if you listen to the c/k trucks, or astro and fullsize vans, they have the same noise b/c of the high pressure pump.
does anyone else's pump do that?
also what is the correct pressure it should be?
My new one does the same thing because they didnt reuse the pulsator thingy. Mine seems to vary though. Sometimes a quite whine sometimes a loud whine. I dont know if the varying loudness is normal or not.
__________________ 1987 Iroc 350
GTS tail light covers, 4thGen Camaro SS Wheels w/Sumitomo HTR ZII 275 rear, 255's in front, Bilstein shocks/struts, Energy Suspension, MOOG stuff, K&N filters, MSD stuff, Adjustable Borla cat back, SLP 1 3/4 headers w/ Air born ceramic coating, 3" Catco cat, AS&M LTR's, ported plenum, Serpentine Conversion, Walbro Fuel Pump, Holley afpr4th Dash Swap2002 LS1 waiting to be installed !!!!!
Hey, if it works, don't worry about it. My black 86 IROC buzzes so lound you can hear it over the radio (till I start the engine). My red 86 IROC is so quiet I thought it was broke till the engine started and ran.
__________________ Blue 81 Z28 350 w/4 spd
Black 86 IROC Z w/TPI 305 & 700r4
74 Camaro LT w/400 4brl/turbo 400/3.08 pos rear
