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Mass Air, Injectors, and Pump Size I think...

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Old 02-26-2012, 05:33 PM
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jake.becker
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Unhappy Mass Air, Injectors, and Pump Size I think...

I have a 1986 Mustang GT that has got some mods and i think i need mass air. My car has been running kind of ****ty and i think i have missed some key mods along the way to help driveability. I have a 302, bored .40 over, forged pistons running 9.1:1(ish) compression, Trick Flow Street Heat upper and lower intake, 70mm throttle body, Vortech 5-6 psi V-3 SCi trim supercharger, and Flowmaster exhaust with BBK shorty headers. It has a World Class T-5 with a King Cobra clutch and Ford Racing Adjustable clutch quadrant as well. I have ordered new fuel rails and adjustable regulator. I think that I need bigger injectors, bigger fuel pump, and mass air but that is where the problem lies. I don't know what i need! Any advice would be appriciated!
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Old 02-26-2012, 05:40 PM
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Ditty
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I'd suggest posting this in the Fox body 5.0 section. This is the 2005-2012 section. Odds are that someone in the Fox Section can help you.
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Old 02-26-2012, 06:15 PM
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projectresto83
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If your injectors and pump are stock them ummm YEA you need to be bigger with the s/c. The MAF swap will definitly help your situation!
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Old 02-26-2012, 07:54 PM
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jake.becker
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Thanks guys and sorry for posting in the wrong place. I'll repost correctly. I just ordered a Walbro 255 LPH pump, after some research I decided that was a good idea. I just don't know what size maf sensor to upgrade too, or how big of injectors... Thanks again
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Old 02-26-2012, 09:08 PM
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projectresto83
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Depending on your heads....30-42lb injectors and a 90mm lightning MAF is always nice
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Old 02-26-2012, 09:58 PM
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jake.becker
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I have stock heads... Sad I know, just havent had it in me to spend $2000 on a set of twisted wedges.. I plan to do it soon.... I have had the car for ten years.. Lol
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Old 02-27-2012, 05:22 PM
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nitrous_bob
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unless your stock stuff is not working properly, what you have is adequate. your not over 300 hp with stock heads and 6 pounds of boost

i have sprayed a 100 shot on 3 different cars with all stock and no probs.

im not saying you shouldnt upgrade....but right now you dont need anything bigger than 24 lb'ers and a 73+ maf with a 65 tb
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Old 02-27-2012, 09:09 PM
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jake.becker
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Well I talked to the performance shop for over an hour today and decided what i'm going to do. Twisted wedge heads are on there way along with a new Holley HP ECU & EFI harness kit along with a 3 prong MAP and wide band O2. The nee management system looks awesome and should allow me toupgrade injectors too. Hopefully I can unleash some missing power
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Old 02-27-2012, 09:11 PM
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projectresto83
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Screw the Holley stuff...just get a quarterhorse or FAST XFI setup
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Old 02-27-2012, 09:27 PM
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jake.becker
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the nice thing about the holly setup is when I add more mods it will auto tune. Do the ones you mention learn and adjust to?
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