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Horsepower in a box

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Old Nov 5, 2000 | 01:34 AM
  #1  
Ehelmsin's Avatar
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From: Gainesville, fl
Horsepower in a box

I was at the local car meet tonight and noticed a little box under the hood of a lot of 4th gens. It plugged into to MAF and was called "Horsepower in a Box," I guess it somehow modifies the signal from the MAF. Anyone know what these do, where you get them, do they have them for our cars, do they work, are they worth it? Thanks.
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Old Nov 6, 2000 | 09:32 AM
  #2  
Kyle F's Avatar
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From: Columbus,OH
YOu are right in what they do. It modifys the signal sent to the ECM. It would be kinda like taking the IAC and relocating it lower in the intake trak to say the car is getting cooler air. Anyways I think it just tells the computer that more air so it will richen the misture up at WOT. This is a good way to get around bigger injectors or an adjustable fuel pressure regulator. Until bigger mods are done anyways. I also think they claim like 10-15hp increase so you could say they might get a +2hp peak increase.

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86 Trans Am 355 TPI Rebuilt 700R4 with Corvette servo, modified valve body, and a B&M Torque Converter (2000 rpm stall w/ lock up), 87 350 block bored .30 with new crank, bearings, rings, and magnafluxed rods. Reworked 305 heads with 3-angle valve job. Added in the rebuild was an SLP TPI cam, BBK 58mm Throttle Body,SVO 24# injectors,MSD 6A, Hypertech Power Coil, 1.5 Crane roller tipped rocker arms, SLP Intake Runners and Port matching in upper intake including fully ported plenum, TPIS adjustable fuel pressure regulator @ 46psi, Hooker shorty style headers w/ Thermotech heat wrapping, Custom 3” exhaust with Flowmaster muffler and chrome quad tips, Hypertech Thermomaster Computer chip, K&N open element cone filter on modified MAF per TPIS specs, MSD Wires, removal of A/C hardware and a 1LE firewall cover installed. Also there has been a PST front suspension kit with Hotchkis strut tower brace
http://geocities.com/SunsetStrip/Garage/9548/kyle.html

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95 Talon TSI, 96 Probe GT, 91 T/A L98, 89 RS, 86 Mustang GT, 88 Mustang LX 5.0, 92 Thunderbird V8. couple or ricers that I think were Civics or Preludes not sure what year, 95 Celica GT-S, 94 Chevy 1/4 ton 350, one of those NASCAR F150's
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