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| headers and true dual exhaust i'd say about 15,tb i'd say about 5 or 10,and underdrive pullies vary. i had a friend get about 20 more hp from them and then another friend only got 5 so its varys
__________________ Definite Obsession DFW chapter President www.DefiniteObsessions.com 1986 ranger, gen 2 cab,front end and interior. bagged and 4 linked, laying tranny member( need to remove that) soon be draggin on a street near u. |
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| yeah my friend has a GMC Jimmy with the 4.3 vortec engine and I am so wanting to beat him in a race. Any Mods I can get will be cool so once again I can have the faster truck.
__________________ 99 4.0 4x4, amazon green, cowl hood, billet grill,clear corners, brush guard w/ KC lights, chrome side step bars,chrome bed rails,diamond tailgate protector, Lightrider tonneau cover, euro tailights ,FIPK K&N air intake,Gibson exhaust, bbk throttle body, Granetelli mass air flow. |
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| that shouldnt take much. having owned that engine myself I can tell you that for a Jimmy, its a big engine. but compared to my 4.2 V6 I got in my truck, the 4.3 is an underpowered unreliable, peice of crap. ill look around on the net and see what i can come up with, but is his a 4x4? is it 4 door or 2? and what mods does he have? how bad does he beat you now?
__________________ 1999 F-150 AirRaid, 4.10 gears, tint, superchip, see my gallery for more. |
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| ok a superchip will give you...... 16HP and 25 tourque for $230 thats what they claim but it sounds decent then get a new Airflow Sensor from Summit Part number # GRN-70004019-05 which is said to give 10-15 more HP then the exhaust of your choice, you already got intake right? do you have a stick or a auto? what rear end do you have? it shoudnt take much
__________________ 1999 F-150 AirRaid, 4.10 gears, tint, superchip, see my gallery for more. |
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| ok I got an air intake my ranger and his jimmy are 4x4. his is the two door style. I think I have 3.73 gears in the back whatever comes on a 99 stock. He has no mods right now. He beat me by a cars length I was right by his bumper.
__________________ 99 4.0 4x4, amazon green, cowl hood, billet grill,clear corners, brush guard w/ KC lights, chrome side step bars,chrome bed rails,diamond tailgate protector, Lightrider tonneau cover, euro tailights ,FIPK K&N air intake,Gibson exhaust, bbk throttle body, Granetelli mass air flow. |
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| and both vehicles are automatic
__________________ 99 4.0 4x4, amazon green, cowl hood, billet grill,clear corners, brush guard w/ KC lights, chrome side step bars,chrome bed rails,diamond tailgate protector, Lightrider tonneau cover, euro tailights ,FIPK K&N air intake,Gibson exhaust, bbk throttle body, Granetelli mass air flow. |
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| i say gears and a supercharger and u have him whipped. moved to under the hood also
__________________ Definite Obsession DFW chapter President www.DefiniteObsessions.com 1986 ranger, gen 2 cab,front end and interior. bagged and 4 linked, laying tranny member( need to remove that) soon be draggin on a street near u. |
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| a chip, an intake, an MAF, and exhaust will do it. you also gotta make sure you go almost all the way through your RPM curve. Here is an example. I got a 99 F-150 extended cab 4.2 auto. It is VERY heavy. Stock, I can beat a Jimmy/Blazer and they are lighter weight and they have a bigger engine. my brothers truck is an F150 4.2 with 32 inch tires. He can beat a Jimmy no sweat and all he has is flows. The point is, the jimmy has 2 problems, 1. Its a Chevy 2. Its got a big engine that is very underpowered and very unreliable. Shoot, I am suprised you didnt run side by side, maybe he was just havin a good day. ohhh yea, put your tailgate down. it helps.
__________________ 1999 F-150 AirRaid, 4.10 gears, tint, superchip, see my gallery for more. |
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