Best Honda K20 Mods & Upgrades🔧 [Tuning Guide🏁]

We look at the best mods and upgrades for your Honda K20 engine. There were many K20 variants so we discuss these and the best head swaps and parts swaps.

We also look at tuning mods from intake and exhaust, to turbo upgrades for your K20 to help you choose the best mods and avoid the common K20 tuning pitfalls.

K20A JDM only (The VTEC comes in at 6000 rpm) The Spec R engine had a lighter flywheel, high compression pistons, stiffer valve springs and longer camshaft durations. The cylinder heads were also ported and polished and these special engines were hand tooled at the factory. They show the potential of the other engines if you take your time tuning and setting them up.

2001–2006 Honda Civic Type R 11.5:1 212 hp @ 8000 RPM 149 lbft@ 7000 RPM 2001–2006 Honda Integra Type R 11.5:1 217 hp @ 8000 RPM 152 lbft@ 7000 RPM 2002–2008 Honda Accord Euro R 11.5:1 217 hp @ 8000 RPM 152 lbft@ 6000 RPM 2007–2011 Honda Civic Type R 11.7:1 221 hp @ 8000 RPM 159 lbft@ 6100 RPM (VTEC 5800)

K20A1 There was technically no A1 version - essentially it's still a K20A3 but a lower compression to handle the turbo! Typically a twin scroll Mitsubishi TD04HL-15T turbocharger is fitted with 13.5psi of boost. 2001-2006 Honda Stream 9.7:1 156hp @ 6500rpm 139 lbft@ 4000rpm 2001-2006 Honda Stream 9.8:1 158hp @ 6500rpm 140 lbft@ 4000rpm

K20A2 (The VTEC comes in at 5800rpm) 2001-2006 Honda Civic Type R 11.0:1 200hp @ 7400rpm 139 lbft@ 5900rpm 2002-2004 Acura RSX Type S 11.0:1 200hp @ 7400rpm 142 lbft@ 6000rpm 2002-2004 Honda Integra Type R 11.0:1 200hp @ 7400rpm 142 lbft@ 6000rpm

K20A4 2002-2006 Honda CR-V 9.8:1 150hp @ 6500rpm 140 lbft@ 4000rpm 2003-2007 Honda Accord 158hp @ 6500rpm 140 lbft@ 4000rpm

K20A6 (The VTEC comes in at 2500rpm) 2003-2006 Honda Accord 9.8:1 155hp @ 6500rpm 140 lbft@ 4000rpm 2003-2006 Honda Accord 9.8:1 155hp @ 6500rpm 140 lbft@ 4000rpm

K20A9 2004-2007 Honda FR-V 9.8:1 150hp @6500 Rpm 142 lbft @4000rpm

K20Z

K20Z1 2005-2006 Acura RSX Type-S 11.0:1 210hp 143 lbft @ 6200rpm Redline 8100rpm 2005-2006 Honda Integra Type S 11.0:1 210hp @ 7800rpm 143 lbft @ 6200rpm Redline 8100rpm

K20Z2 2006-2011 Acura CSX 9.8:1 153hp @ 6000rpm 139 lbft @ 4500rpm Redline 6800rpm 2006-2011 Honda Civic 9.8:1 153hp @ 6000rpm 139 lbft @ 4500rpm Redline 6800rpm 2006-2015 Honda Accord 9.8:1 153hp @ 6000rpm 139 lbft @ 4500rpm Redline 6800rpm 2006-2010 Honda Civic 2.0 S / S-L 9.8:1 153hp @ 6000rpm 139 lbft @ 4500rpm Redline 6800rpm

K20Z3 2006-2011 Honda Civic Si 11.0:1 197hp 139 lbft 8000rpm 2007-2010 Acura CSX Type-S 11.0:1 197hp 139 lbft 8000rpm

K20Z4 2007-2010 Honda Civic Type R 11.0:1 201hp @ 7800rpm 142 lbft @ 6800rpm Redline 8000rpm

K20C

K20C1 2015-present Honda Civic Type R 9.8:1 306hp @ 6500rpm 295 lbft @ 2500rpm

K20C2 2016-present Honda Civic LX 10.8:1 158hp @ 6500rpm 138 lbft @ 4200rpm 2016-present United States Formula 4 Championship 10.8:1 158hp @ 6500rpm 138 lbft @ 4200rpm

K20C3 2016-present Honda Avancier 10.8:1 272hp @ 6500rpm 273 lbft @ 4200rpm

K20C4 2018-present Honda Accord 9.8:1 252hp @ 6500rpm 273 lbft @ 1500-4000rpm 2018-present Acura RDX 9.8:1 272hp @ 6500rpm 280 lbft @ 1600-4500rpm K23A1 13.5 psi of turbo boost and dual path turbine housing makes this a special K series variant. 2007-2012 Acura RDX 6800rpm 240hp @ 6000rpm & 260 lbft 4500rpm

We have a separate tuning guide for the K24 and for the best K20 tuning parts upgrades and mods see our frequently updated guide on our main site. The best modifications on an engine are in our opinion the ones that give the best value for money

Footage Credits
iStock,com/N_Saroach

[gabrielc]

This guy looks like Professor X so he must know a lot about rolling around and wheels.

[hisownman]

Another awesome and informative video. Thumb's up 👍

[nothingmemorable]

I am not looking for mega power but would like to up the power on my UK accord k20.
What are my first steps??
Are there simple mods that can get me up towards 200 without full on crank, head change options??

Many thanks

Craig

[ItsBuster]

hi, what catback would you recommend? I'm looking at tegiwas dont want anything too loud too or raspy

[tdollaz]

Does the k20z1 have a non-balance oil shaft from factory?

[alexandrelira]

@FUELTECHUSA is a good stand alone ECU, search about!!