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109 Posts
Discussion Starter #1 (Edited)
So I promised I would compile a list and post the prices on what it took me to K-Swap my vehicle. The numbers are solely taken on what it took me from tear down to start up. There are some gaps that do not involve the swap directly and are inputted out of my own interest.

I'd like to start off that this swap was something I never expected, and if I was asked if I do it again, I would say NO. This was my first major car project and I was way over my head. I tried to do the swap mainly myself but it became too much very quickly. There were a lot of trial and errors during the swap, which you see multiple parts that may be the same.

The items listed in bold red are mainly the most essential items.

Without further or due... The list!

Parts Cost List
Motor/Tranny: $3,000 (K24A2 Longblock / K20Z3 Transmission)
Hasport Mounts: $548
Header: $270
HR Tuck Fuel Rail: $112
HR Tuck Fuel Lines: $187.50
HR Oil Cap: $56
HR RSX Short Shifter: $304
HR Fuel Pressure Gauge: $32
HR Shift cables: $350
HR A/C and PS delete kit: $335
Hybrid Racing shipping/processing fee: $90
RBC Intake Manifold: $190
K20 Wire Harness: $120
All-In-Fab Radiator/shroud/fans: $555
06-11 Civic Si ECU: $119.96
07 TL Throttle Body: $80
Driveshaft shop Axles: $760
Removed Hybrid system: $100
Clutch hardline altered: $20
Hondata Intake manifold gasket: $50
TSX Starter: $105
Valve cover gasket: $70
Pick up sensor: $63.40
K-Tuned swivel Thermostat adapter: $170
K-Tuned Upper filler neck adapter: $180
K-Tuned Oil dip stick – $82.49
Hondata Flashpro: $690
Water Pump housing: $120
K24 A/C compressor: $149
Water Pump Gasket: $7.03
Fuel Injectors: $75
Spark plugs: $69.92
1 qt syncromesh: $15.73
Oil: $66.48
Oil Filter: $22.73
Coolant: $38.46
1qt Honda Manual transmission fluid: $8.24
EP3 Tensioner: $70.00
Tubing for Fabricated Header: $145.13
Invidia N1 exhaust: $500
Password JDM Hood Risers: $28
Password JDM CF Coil Pack Cover : $100
Spoon Radiator Cap: $40.00
Nardi Steering Wheel: $287.00
Blox Magnegtic Oil & Transmission plug: $19.85
NRG Quick lock Wheel Hub: $120
NRG Short Steering Wheel Hub: $89.00
NRG Quick Release Steering Wheel: $159.00
6 FT Braided -16 hoses: $37.14
Aerocatch Flush Hood Pins w/ Lock: $132.65
TSX Alternator: $100
WeatherTech Floor Mats: $127.95
Wire-Worx Tucked Harness: $800.00
16AN Fittings: $120.00
Battery Relocation: $400.00
RCPC Valve Cover Powder Coated: $40.00
RCPC Oil Pan Powder Coated: $60.00
DC Sport Race Header: $400.00
Another ECU w/ VIN: $111.46
2 FT Braided -8AN hose: $22.39
Transportation from FL to CA: $1,650
ODB shop fees: $1,550
RCPC Rims refinished: $975
CRZ OEM Engine Harness: $275.40
Chassis Harness and Center Console Harness: $846.57
08 Civic SI Harness and mods: $671.93
Civic MAF: $30
Civic Knock Sensor: $11
Reprogram Attempt 1: $86.40
Reprogram Attempt 2: $89.44
Initial Shop Estimate: $2,039.44
Shop Jan 23, 15(Shop fees/misc items): $1,100
Shop Jan 19, 15(Alternator): $160
Shop Jan 16, 15(O2 Sensors): $180
Shop Mar 31, 15(Fuel Injectors): $350
Shop Mar 31, 15(Shop fees): $500
Shop Mar 31, 15(Map Sensor): $120
Shop Apr 3, 15(Oil Pump Check): $600
Tune: $450
Total cost so far: $24,807.69

I went with a lot of major brand items that increased the bill. I would also like to add, go with a harness that Hasport makes for the CRZ swap. It would be a lot easier and cheaper. Then when you have the vehicle running, you can tuck it. I made the mistake of buying a tuck harness just to find out it will not work :( A certian shop I'm Cali thankfully was able to get my car running, but afterwards they ended up screwing me over.(Why my vehicle was no longer in their hands)

Here is some further information from Brian at Hasport:

Using the K24A2 harness is the hard way of doing this conversion. A better choice is to use an 06 Civic harness, it is 90 percent correct and requires less modification to get the job done. So converting the 06 harness entails adding some of the CRZ plugs to the harness so it correctly interfaces with the car. Those are

adding the charge wire for the alter connection to the battery
a connector for ignition coils
the connector for the starter power
replacing one of the plugs C101 (Civic Si) with C124 (CRZ)
Adding wiring for the Air Fuel Ratio Sensor.

All these modifications are done when You buy a Hasport conversion harness for $499.
Next there is some rewiring that needs to be done to the ECU A plug. Mostly this involves eliminating the hill start assist mechanism and bringing a power wire into the engine harness through the C124 plug. These second set of modification need to be done in the car even if we build the conversion harness. I've attached a copy of the instruction we include with our harness regarding the A plug changes.

If you have a shop that is doing this conversion the electrical information needed for the CRZ and Civic Si harnesses can be accessed on-line through With this info you can determine what needs to be changed. A two day pass is about $10 and the information can be printed so you can keep it for future reference.

I also have a CNC mock up of what the RSX Hybrid Racing Short shifter is mounted too. This was done by a buddy Justin back in Jacksonville, FL

If you need help or assistance, please let me know and I will help out as best as possible.

I must say I appreciated all the help that I received from my friends back in Jacksonville. The people I ultimately have to thank personally are: Chris from ODB for his awesome welding work and help overall, Justin for helping tear motor out and lending me a lift, Jody for all his initial help, and RCPC for letting me lend some space. I wouldn't have been able to do what I did without their help! I hope you all enjoy and let me know what you think ^.^ There is always room for improvements!

I like to add too, that after I had it tuned, my numbers were 247HP and 195TQ


3,072 Posts
What happened to the wireworx harness?

Can't put a price on happiness/pleasure, it surely has to be such a fun little car.

109 Posts
Discussion Starter #4
What happened to the wireworx harness?

Can't put a price on happiness/pleasure, it surely has to be such a fun little car.
The wireworx harness ended up blowing fuses apparently, so had to start from scratch and do another one. Learned to get the car running first and then tuck it.
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