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'08 GD3 Fit Running Autocross

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Old Jan 3, 2015 | 12:34 AM
  #1  
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'08 GD3 Fit Running Autocross


Corbeau A4 seats, rear seats removed, J's Racing chassis and strut braces, Password JDM intake, Odyssey battery, Weapon R intake plenum, Hondata tune, Swift Sport springs, Tokico adjustable struts/shocks, Buddy Club grounding/voltage stabilizer, Megan Racing full exhaust and header, Buddy Club short shift kit, TWM weighted shift knob, Mugen sport pedals, Seibon carbon fiber hood and rear spoiler, Blox front sway bar, Whiteline adjustable rear sway bar, Spoon Sports torque damper, JDM Honda floor console, JDM Honda LED tail lights and brake light, JDM Honda passenger visor with mirror, JDM Honda ceiling console, JDM Honda map lights, JDM Honda red 'H'/Fit/RS badges, 15x7 Enkei RFP1 wheels with 225/45 15 Hankook C71 tires for autocross, and 17x7.5 Enkei NT03 wheels with 225/25 17 Yokohama S-Drive tires for summer street use. Dyno tuned 106 BHP at the wheels = 130/135 BHP at the crank.
 

Last edited by 01screw; Jan 3, 2015 at 12:42 AM.
Old Jan 7, 2015 | 05:36 AM
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how did you install the rear sway bar? i thought the fuel line got in the way...
 
Old Jan 7, 2015 | 10:23 PM
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I took the fuel line fasteners off and added a couple nuts to act as spacers, to give the clearance. It does just barely allow adequate clearance. I was nervous about it at first, but there's been no problems. I also had to drill two notches in the twist beam for the sway bar u-bolt mounts. I've had it on two years and 25 or so Autocrosses. It does seem to work better than my original sway bar that only mounted to the spring perches.
 
Old Jan 7, 2015 | 10:46 PM
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Wow,

Those tires look so wide. Like seeing 285/40 tires on a mustang, eta. Looks so good.
 
Old Jan 8, 2015 | 03:34 AM
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Can you post up any dyno charts? I'm curious how the weapon r manifold and password jdm intake are affecting your lower end. A few guys show more torque with stock intakes than with anything aftermarket.
 
Old Jan 8, 2015 | 12:44 PM
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Saw this at the NCAC back in October. We had just bought our 08 fit a couple weeks before so I was real curious about it. Looked like fun!
 
Old Jan 8, 2015 | 10:33 PM
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Thanks, I'm going to try an run 245/40 15 on the front this coming season. The car really needs a LSD...
 
Old Jan 8, 2015 | 10:34 PM
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Originally Posted by kylerwho
Can you post up any dyno charts? I'm curious how the weapon r manifold and password jdm intake are affecting your lower end. A few guys show more torque with stock intakes than with anything aftermarket.
I'll try and find the charts. I have them somewhere...
 
Old Jan 9, 2015 | 10:52 PM
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My Fit's Dyno Chart

Originally Posted by kylerwho
Can you post up any dyno charts? I'm curious how the weapon r manifold and password jdm intake are affecting your lower end. A few guys show more torque with stock intakes than with anything aftermarket.
 
Old Jan 10, 2015 | 07:17 AM
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nice graph. I have a feeling you are starting to lose air velocity in the upper range. If you compare the shape of your graph to others that have posted up with stock manifolds you may notice that peak power is held out to 6-6.2k rpm. Granted this is only a variation of 6-7hp. Your torque curve seems to be shifted to a higher rpm as well.

My intentions are not to hate on your setup, but I am interested as to how the weapon r manifold affects air flow across the power band. I used to have one of the early prototypes back in the day.

have you considered switching to an ik22 spark plug?
 
Old Jan 10, 2015 | 01:41 PM
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Originally Posted by kylerwho
nice graph. I have a feeling you are starting to lose air velocity in the upper range. If you compare the shape of your graph to others that have posted up with stock manifolds you may notice that peak power is held out to 6-6.2k rpm. Granted this is only a variation of 6-7hp. Your torque curve seems to be shifted to a higher rpm as well.

My intentions are not to hate on your setup, but I am interested as to how the weapon r manifold affects air flow across the power band. I used to have one of the early prototypes back in the day.

have you considered switching to an ik22 spark plug?

That's OK, I don't feel the hate... My Weapon-R has been on the car for 6 years or so. I had a K&N intake on the car until it broke a few years ago, and then I went to the Password JDM kevlar intake. That felt like it allowed more power higher in the revs. I've already upgraded the plugs, though I don't remember with what. They are iridium... I'll check the ik22 plugs out, after I make sure that I don't already have them. I haven't done any new mods to the engine in couple years... I've been playing with the suspension and alignment, within my budget.
 
Old Jan 15, 2015 | 11:27 AM
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I can't wait to autocross mine! I had a Miata and did not get to autocross once! Hopefully I see your fit around.
 
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