4.6l 2v horespower upgrade - Forums at Modded Mustangs
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post #1 of 4 Old July 16th, 2019, 10:56 AM Thread Starter
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4.6l 2v horespower upgrade

im new to the forum stuff.

i have decided what im going to do for my engine upgrade. im upgrading heads and cams to trick flow twisted wedge 44cc top end kit. but im having a hard time deciding what fuel pump and fuel injectors i need. i already have ford racing intake, 78mm throttle body, pypes off road h-pipe, and flow master exhaust. i know i need headers. im not looking for huge power that will be a long well thought out process before that happens. but what do you all think?

---------- Post added at 02:56 PM ---------- Previous post was at 02:55 PM ----------

forgot to mention that its a 2002.
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post #2 of 4 Old July 16th, 2019, 02:51 PM
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Should be fine with a simple walbro 255 pump. 42lb injectors would be more than enough but doesnt hurt to over do the injector sizes. Costs are about the same from 42lb injectors to 80lb.

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post #3 of 4 Old July 16th, 2019, 06:45 PM
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Alot of money for little gain imo considering lightly used supercharger kits go for $2500-$3000. If you're set on the heads atleast get custom cams to get a little more power. I've got a lightly used 26000 mile svt focus pump that drops right in if you're interested. $70 shipped. The Walbro Tu229HP-2 is a good replacement as well. For injectors you can get used 39lb cobra injectors with adapters for $150 or look for 42's. They'll give you enough head room up to 500rwhp.

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post #4 of 4 Old July 16th, 2019, 08:16 PM
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I tend to agree with Blownstang. Horsepower is pretty easy to make with a centrifugal supercharger. I went with a new ProCharger but used kits are abundant.

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