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02-07-2014, 07:32 PM | #1 |
HOOAH!
Join Date: Sep 2013
Location: Fort, Gordon GA / JAX, FL
Posts: 173
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top end
My car is all stock minus JLT intake with 84,xxx miles. It seems to run out of steam around 5,500 rpm but pulls hard from 3,000-5,500ish. Is that normal? I know these cars are set up for low end torque. What Mods improve top end power with out killing bottom end?
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2003 DSG Mach 1. "MODS": JLT RAI, MAC cat-back, MGW Shifter, FRPP aluminum DS, Accel Super COP's, Chrome 18"x9" 00' Cobra R's, tinted rear side reflectors, tinted sequential tails w/ Raxiom modified flasher, led license lights, black reflective bumper insert letters, flame grille pony. |
02-07-2014, 08:34 PM | #2 |
Registered User
Join Date: May 2005
Location: Woodstock,GA
Posts: 544
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Re: top end
headers! cheapest and easiest + a tune.
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02-07-2014, 08:40 PM | #3 |
"God of Thunder"
Join Date: Jan 2007
Location: DC
Posts: 1,076
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Re: top end
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02-07-2014, 10:39 PM | #4 |
Registered User
Join Date: Dec 2007
Location: beavercreek, oh
Posts: 4,695
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Re: top end
The only way to add significant power up top is wit cams aor a centri.
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02-08-2014, 06:36 PM | #5 |
HOOAH!
Join Date: Sep 2013
Location: Fort, Gordon GA / JAX, FL
Posts: 173
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Re: top end
I eventually want to add boost ie- centri or eaton swap. But right now that doesnt fit the budget. I want to do small upgrades in the mean time like exhaust, injectors, coils, some suspension (upper and lower control arms, sway bars, strut braces, remove isos.)
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2003 DSG Mach 1. "MODS": JLT RAI, MAC cat-back, MGW Shifter, FRPP aluminum DS, Accel Super COP's, Chrome 18"x9" 00' Cobra R's, tinted rear side reflectors, tinted sequential tails w/ Raxiom modified flasher, led license lights, black reflective bumper insert letters, flame grille pony. |
02-08-2014, 06:48 PM | #6 |
Dark Knight
Join Date: Nov 2009
Location: Albuquerque, NM
Posts: 5,759
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Headers help with top end. The brands with larger primaries help the most but are also the most expensive. Good mod if you can install yourself otherwise its pretty pricey.
On a budget id get a midpipe, gears, and tune. Then save up for boost. Sent with a shot of DROID go fast
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Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage |
02-08-2014, 07:42 PM | #7 |
HOOAH!
Join Date: Sep 2013
Location: Fort, Gordon GA / JAX, FL
Posts: 173
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Re: top end
Thank you 828. I dont want to do gears though, I like my decent gas mileage.
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2003 DSG Mach 1. "MODS": JLT RAI, MAC cat-back, MGW Shifter, FRPP aluminum DS, Accel Super COP's, Chrome 18"x9" 00' Cobra R's, tinted rear side reflectors, tinted sequential tails w/ Raxiom modified flasher, led license lights, black reflective bumper insert letters, flame grille pony. |
02-08-2014, 11:00 PM | #8 |
Registered User
Join Date: Aug 2011
Location: Parkesburg, PA
Posts: 1,084
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Re: top end
The curve of any motor(without variable valve timing) is pretty set. Yes, 1 7/8" primary headers will help up top, but otherwise you have to address how your motor's parts use incoming air. That would be your intake manifold, heads, and cams. Heads seem to be fine even for higher hp builds, but your intake manifold and cams are what give you that low end torque. A used, shortened intake and used 96-98 cobra cams are a fairly budget friendly start to more top end.
That being said, move your power curve up in the rpm range, and you'll have to bite the bullet on gears. Less low end, means you need to stay in the upper rpm range to compensate, which means you need 3.90+ gears. |
02-09-2014, 06:58 AM | #9 |
Registered User
Join Date: May 2005
Location: Woodstock,GA
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Re: top end
Not gonna win that way!
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I/E, 4:10's, tune |
02-09-2014, 08:05 AM | #10 | |
Mustang owner since 1970
Join Date: Aug 2003
Location: Charleston,SC
Posts: 6,248
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Re: top end
Quote:
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Bill SUPPORTING MEMBER USAF Retired My 1970 Mach 2003 Ford Mustang Mach I---Black w/5-speed --- gone but not forgotten 2011 Shelby GT-500 --- Ingot Silver Metallic and 6-speed (Sold and Now Terrorizing the residents of New Zealand) 1970 Ford Mustang Mach 1---White w/351C-4v Shaker Hood scoop and T-5 tranny 2014 Shelby GT-500 --- White/red stripes and 6-speed 2019 Mustang Convertible Premium Package w/automatic ___________________ |
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02-09-2014, 10:01 AM | #11 |
Moderating at Mach 1
Join Date: Aug 2002
Location: Baton Rouge, La.
Posts: 16,274
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Re: top end
I agree with Bill. I shifted out on track at 6 grand and Scott Hoag even suggested trying 6300-6500, although I found it fall off after 6.
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02-09-2014, 12:24 PM | #12 |
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Re: top end
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