K20 Powered 2007 Honda Fit - Fuel System - Sport Compact Car Magazine

Take the other HASport billet bracket and mount it onto the top of the engine bracket and over the hole of the stock mount. When it's all secure, put the stock steel bracket over the top of the stock mount and tighten everything up.

Take the other HASport billet bracket and mount it onto the top of the engine bracket and

Fuel System
Luckily for us, Honda's streamlining process means that both the L15 and the K20 use similar quick-disconnect system fuel lines and connectors. With hardly any adjustment, the Fit's fuel line will snap right onto the K20 returnless system fuel line.

Tuners have found the RSX's fuel pump will support up to about 400 wheel-hp, but the Fit's pump is an unknown. Anyone going turbo or using large injectors may want to replace the stock fuel pump. For a mostly stock K-series, the Fit pump will work fine.

Intake And Exhaust System
For an intake, any of the aftermarket RSX short ram units work well. For true cold air, though, you'll need to make one. The exhaust is a bit more complicated, because the Fit has a flat floor with the gas tank under the front seats. Jackson Racing has come to the rescue and will be manufacturing headers that will clear the EPS, the subframe and then terminate just before the exhaust, making a sharp right turn to go down the side.

All the trouble you went through to get the right intake manifold may now leave you with an alternator interference problem. You need an alternator from an EP3 Si, RSX or CR-V. If you're going to try and keep the A/C, get the compressor from one of those as well, the Fit's is not compatible.

All the trouble you went through to get the right intake manifold may now leave you with a

The header seen here is the prototype for the Jackson Racing unit and should be nearly identical to a production version. Jackson Racing is also working on an exhaust, including a version that should flow well enough to support forced induction.

Measure Twice, Cut Once
This is a complicated swap. The electronics and wiring make it a real challenge. Bending the brake lines gently and getting some new A/C lines, plus cutting and reinforcing a frame rail, means you need to be a competent mechanic.

Any K-series engine will work, but the best is one from an EP3 Si or an RSX. If the engine is still in the car, here's a check list of what the junkyard needs to pull out: engine, transmission, shifter cables, shifter box, primary O2 sensor, ECU, alternator, engine harness, battery/starter/ charging harness and, if you want A/C, the compressor and suction hose. If the engine doesn't have the RBB or RBC manifold, it'll also need one of those.

Install the engine subframe. After putting the axles in, attach the lower control arms to the knuckles. Bolt the steering rack and gearbox back to the subframe.

Install the engine subframe. After putting the axles in, attach the lower control arms to

Decide up front if you're going to do this with just a K-Pro or hope HASport or Hondata makes the harness that lets you keep the Fit's ECU so it can run the dash and a few other creature features.

K-Series Engine Codes & Chassis
Engine	Year	Model
K20A	2001-up	Euro/JDM ITR and CTR, JDM Accord Euro-R
K20A2	2002-2004	RSX-S
K20A3	2002-2005	USDM Civic Si,
	2002-2006	RSX
K20Z1	2005-2006	RSX-S
K20Z2	2006-up	Acura CSX (Canada),
	2006-up	JDM Civic
	2006-up	Euro Accord
K20Z3	2006-up	USDM Civic Si
	2007-up	Acura CSX Type-S (Canada)
K23A1	2007-up	RSX
K24A1	2002-2006	CR-V
K24A2	2003-up	TSX
K24A3	2003-2006	Accord (Japan, Europe & Australia)
K24A4	2003-2005	Accord & Element
K24A8	2006-up	Accord

Bolt the rear mount to the HASport bracket using the stock rear mount bolt and HASport-provided nylon lock nut, leave it finger-tight. Install the bracket and mount into the subframe together as a unit. The front of the engine may need to be lifted to make room for both parts to be installed and line up properly. Install the rear mount loosely, using the factory hardware. Next, bolt the HASport rear bracket to the engine and transmission. The front hole will use the stock bolt removed earlier.
Bolt the rear mount to the HASport bracket using the stock rear mount bolt and HASport-pro
Install the custom driveshafts and reconnect the lower suspension. Tighten all engine mounting fasteners and then insert the shifter cables through the opening in the floor. Unless you have a 2006 Si trans, the only cables that 'fit' are from an 2002-2006 RSX (any style).
Install the custom driveshafts and reconnect the lower suspension. Tighten all engine moun
You're also going to need a shifter box from an RSX, because the Fit's mechanism (pictured) works backwards to the EP3 Si or RSX transmissions. Get ready for some fabrication here.
You're also going to need a shifter box from an RSX, because the Fit's mechanism (pictured

The Fit has its gas tank under the front seats and so it requires a unique header. Jackson Racing will be selling a header, based off this prototype, for a K-series Fit. JR will also have an exhaust system to match.
The Fit has its gas tank under the front seats and so it requires a unique header. Jackson
The final step is wiring. For this install, Hondata and HASport have made jumper harness that lets the Fit ECU run the dash (without it, basically none of the dash works) and a K-Pro run the K-series. HASport is hoping to have this available. Be aware that if the Fit ECU is eliminated, the car must also be converted from drive-by-wire to cable.
The final step is wiring. For this install, Hondata and HASport have made jumper harness t
And there you have it. A short ram intake for an RSX will work just fine. HASport went the full distance and its swap keeps the Fit ECU to run the drive-by-wire as well as the A/C and dash functions.
And there you have it. A short ram intake for an RSX will work just fine. HASport went the

The Basics
*Use any K-series engine
*Only RSX (all models) and EP3 transmission
*Requires Hondata K-Pro
*Fit's dash will not work without Fit ECU, requires lots of gauges
*Hondata or HASport may have harnesses for both K-*Pro and modified Fit ECU, which allows Fit dash to function
*Custom axles and specific half-shaft
*Custom header and exhaust (Jackson Racing-supplied)
*RBB or RBC intake manifold required
*EP3 idler pulley assembly
*Minor cutting, welding and fabrication required