So after reading the article in Siphon I was thinking it was useless to modify the Fit because of the horrid Dyno results they achieved. However I have new found faith that it might be worth it to do the 5 or so basic NA mods to the fit. Nothing crazy that will void warranty or that can't be swapped back if I need warranty work done.

I have come to this conclusion after finding the Import Tuner dyno page.

Honda Fit Power Pages Results - Import Tuner Magazine

It really performed well with the exception of the Cat-back. I don't think the full 60mm piping was needed but they said they went with that because the owner had bigger plans later down the road. I think a 50mm system would suffice and really just a new less restrictive rear muffler would likely provide most of the gains. The stock resonator is said to be straight through. Larger piping and smoother bends would likely help but it wouldn't be much. However if you live under the old adage that every little bit helps then like me you might be inclined to replace it all from the cat back with larger mandrel bent piping.

The AFC in the Siphon article provided some pretty healthy gains to the wheels and that was on the power robbing auto transmission. You could expect a few more % to the wheels with the Manual.

I wish Import tuner would do another Dyno with a Header and AFC to that same car. I bet it would net 15+ Whp over the original dyno and in terms of percentages thats really pretty good. Not to mention from looking at the Dyno's the torque increases are also pretty good too and none is getting lost at low RPM's, which is important to me.

I had zero interest in modding my car after the Siphon article but I think the Import tuner dyno has swayed me. I'd sure like to gain 15% more power.

If someone would release a camshaft upgrade I'd be even more excited, but I haven't seen any yet.

So does anyone here have the full set of NA mods that has Dyno'd?

Intake
Header
Exhaust
AFC or other from of Tuning Device (Emanage or other)
LW Pulley (Likely none since it's not been released)

How does the car drive? Do you get an lower MPG? Any 1/4 mile times? Dyno numbers?

 

Looks like those UR pulleys is a MUST...on the 1.5L. Funny how the CAI got 5hp, but most people who had it go back to the OEM air Box with a drop-in.