Hi all,
Have been having hard start problems lately so I decided to check out the injectors. Pulled the plenum and lifted the fuel rails and I physically watched at least 3 of the 9 injectors dripping fuel out when the car is shut off. Luckily it doesnt appear that the cold start valve is leaking down. At any rate, I am going to ship my injectors out and temporarily throw a set of 305 injectors in that I have on a TPI setup that I have in the garage. How much difference in performance will I notice? Who knows....the way these injectors in there are maybe it will be better?

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Ed Stevens
88Roc350TPI
1988 Camaro IROC-Z
350 TPI
700R4
T-Tops
"1KILLRZ"

 

on a stock motor not much 19lb's caan sustin the motor higher fuel pressure does help a little

 

In order to sustain the same horsepower levels, you'll have to bump up the fuel pressure anywhere from 5 to 10 psig. The result will be better atomization. You might like the 305 injectors better!



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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig): 12.57 @ 111 mph.
Former Paxton (6-psig) & former 50-hp nitrous: 12.04 @ 114 mph.
Current ATI D1SC (Initially 10-psig): Projecting high 11's.
Future ATI D1SC (15-psig): Gotta catch them pesky 26-psig boosted TTA's!!

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.