how far can i push these 28# injectors and stock pump
03-09-2006, 10:15 PM
#1
how far can i push these 28# injectors and stock pump ok, it has safely done 440's at the tires so far, im fixin to try out my new ram air mod and im sure it will demand even more fuel, how much hp can you get out of a stock fuel pump/injector setup or is it time for some svo30/255lph setup, im tryin not to spend money at the moment unless i have to since uncle same just robbed me dry 
03-10-2006, 03:10 AM
#3
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My car made 460 with the stock 26's and stock pump, I put just a regular NOS inline pump on the car for the squeeze and it made 610/700 on pump gas multiple times....I have only run it at 540 rwhp at the track due to the 4.56's but the plugs always came out fine.......but it is cheap insurance to atleast put a pump in the car........
03-10-2006, 08:57 AM
#4
A local guy has a 233/239 with Walbro inline pump and 26.6lb injectors and was at 105% duty cycle. I run 42lb injectors and Walbro 340m in-tank w/ hot wire kit with my Cam only MS3 346. I haven't had a chance to put it on the dyno, but better safe than sorry when it comes to fuel.
03-10-2006, 09:25 AM
#5
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What is the cycle duty of your 28's at WOT? Mine right now is 101-104% and I'm only dynoing 423hp locked. Most people say that if your injectors see more than 80-85% cycle duty on a regular basis you need to upgrade. Maybe you can squeeze some more power out of it. 
03-10-2006, 01:30 PM
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Originally Posted by BAIN
What is the cycle duty of your 28's at WOT? Mine right now is 101-104% and I'm only dynoing 423hp locked. Most people say that if your injectors see more than 80-85% cycle duty on a regular basis you need to upgrade. Maybe you can squeeze some more power out of it.
03-10-2006, 06:50 PM
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My stock pump was supporting 450rwhp with no problem.. But, with all the money you have in that car I would just go ahead and spend the money on a pump and get it over with.
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03-11-2006, 05:33 PM
#9
i'm doing close to 440hp on a mustang dyno w/stock injectors(28's),but i have a walbro255 pump.i was 28hp higher on a dynojet. i'm going with a new cam(g5x4)and a slightly ported fast 90mm intake. i don't think the 28's will work for me this year,i got some 37lbs.
