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Are 30lb. injectors to big for a stock motor?

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Old 12-26-2003, 03:57 PM
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Question Are 30lb. injectors to big for a stock motor?

I am wondering are 30 lb. injectors to big for a stock motor. I am curious because I just bought a walbro 340 intake fuel pump (stock pump going bad), I am in the process of buying an adjustabel fuel pressure regulator (stock regulator going bad), and I was wondering if the 30lb. injectors are just to big. I would put 28lb injectors on it but I have not been able to find them yet. Just for the info I am redoing the fuel system because the car has 153,000 miles on it, and it will be tuned after the parts are installed. Any help woulb be very appreciative.

Thanks,
Chris


1998 Silver Trans Am
Best e.t. 13.2@106
Mods: 3000 stall (new), 3.73 gears, direct flow lid, ported maf, flowmaster exhaust, HPPIII, Free ram air mod, and Ram air hood and air box.
Old 12-27-2003, 12:51 PM
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Your stock injectors are 28*, but 30* is just fine. Your regulator is in the tank.

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Old 01-02-2004, 08:07 AM
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i thought stock 98-00 injectors were 26#
Old 01-02-2004, 08:20 AM
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98 are 28 but at more than the industry standard of 3.0bar fpr rating.

So if you put 30# in you might need to get a lower fpr for good idle/etc. They look a helluva lot like the vw mk3/mk4 fpr's which are quite abundant.
Old 01-02-2004, 04:34 PM
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Originally Posted by samz28
98 are 28 but at more than the industry standard of 3.0bar fpr rating.

So if you put 30# in you might need to get a lower fpr for good idle/etc. They look a helluva lot like the vw mk3/mk4 fpr's which are quite abundant.
is that fuel pressure regulator? can that be adjusted iwth tuning?



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