{"id":670,"date":"2021-11-10T03:13:23","date_gmt":"2021-11-09T23:13:23","guid":{"rendered":"http:\/\/ff-squad.com\/wp\/?p=670"},"modified":"2025-08-26T09:48:19","modified_gmt":"2025-08-26T05:48:19","slug":"k20a-a2-z1-k24a2-into-02-04-rsx-base-wiring-ecu-misc-swap-details","status":"publish","type":"post","link":"https:\/\/ff-squad.com\/technet2\/k20a-a2-z1-k24a2-into-02-04-rsx-base-wiring-ecu-misc-swap-details\/","title":{"rendered":"K20A\/A2\/Z1\/K24A2 into 02-04 RSX Base Wiring, ECU, &#038; Misc. Swap Details"},"content":{"rendered":"<p>I normally wouldn&#8217;t care about this specific swap as I don&#8217;t own an RSX or any of the newer 02+ generation Honda\/Acura&#8217;s. I can&#8217;t stand those chassis&#8217;s! But this became a topic regarding a friend of mine who performed an &#8217;07 K24A2 swap into an &#8217;03 Base RSX&#8230;AUTO at that. Auto converted to manual. For some reason its running like doo-doo and wants my help in figuring out wtf is up with it. I have yet to see whats wrong with it but I&#8217;ve been researching what&#8217;s required in performing a Type-S or TSX swap into an RSX Base.<\/p>\n<p>What I&#8217;ve learned thus far&#8230;<\/p>\n<ul>\n<li><strong>If reusing a Base RSX engine harness&#8230;<\/strong><br \/>\n(1) TPS outer wires needs to be swapped around in order to correct wiring orientation for Type-S throttlebody use<br \/>\n(2) Wiring for 6spd reverse lock is required (more on this later)<br \/>\n(3) Underdash wiring for auto trans shifter needs to be modified and set for &#8216;neutral&#8217; or else vehicle will not start for manual conversion.<br \/>\n(4) Immobilizer bypass required if KPRO is not being used<\/li>\n<li><strong>If using a Type-S engine harness &amp; ECU, no wiring mods required..<\/strong><br \/>\n(1) This is allegedly all 100% plug-n-play for a Type-S swap respective to year (02-04 &amp; 05-06)<br \/>\n(2) Immobilizer bypass required if Kpro is not being used<\/li>\n<li><strong>K24A2 swap requires specific attention..<\/strong><br \/>\n(1) Using a Type-S engine harness is fine but its best to use a Type-S or reuse the RSX Base crank sensor as the K24A2\/TSX crank sensor uses a different connector and pin configuration and will cause issues if not corrected.<br \/>\n(2)Immobilizer bypass required if KPRO is not being used. TSX ecu is incompatible with an RSX because it requires a Drive-by-Wire driven throttlebody system.<br \/>\n(3) Adaptation of a Type-S throttlebody to K24A2 intake manifold (or RBC\/RRC) is required via throttlebody adapter plate.<br \/>\n(4) If using a Type-S &#8220;PRB&#8221; ecu to power the K24A2, it&#8217;s best to switch the intake VTC cam gear to a Type-S or K20Z3 VTC gear to obtain 50-degrees of VTC which the factory programmed PRB ecu is programmed to use. Stock K24A2 VTC gear is limited to 25-degrees. The stock PRB ecu can run the K24A2 engine but it&#8217;s best to move up to a KPRO and run the proper calibration for a K24A2 engine until you can get around to dyno tuning. PRB programming is made for a 2.0liter engine so its lacking the fuel\/timing\/and VTC maps for a 2.4liter&#8230;2 different beasts.<\/li>\n<li>Type-S primary 02 sensor is required (Base primary 02 is not a wideband unlike a Type-S primary 02).<\/li>\n<\/ul>\n<p>Easiest method is to run a Type-S engine harness (w\/crank sensor), ECU, Primary 02, with transmission as it is all pre-set for 6spd use. No real fumbling around is needed for a Type-S\/Type-R\/K24A2 swap.<\/p>\n<p>The K20A3 engine uses smaller size injectors (270cc) vs. Type-S + TSX engines (310cc). The injector size is programmed into the factory ecu programming. So, make sure you don&#8217;t reuse K20A3 injectors on a Type-S or TSX engine swap as the engine will run like crap when using a factory PRB \u00c2&nbsp;ecu or are KPRO&#8217;ing at a later time.<\/p>\n<p>Other Swap Notes<\/p>\n<ul>\n<li>Base RSX cruise control cable is a tad short for a Type-S swap and tends to keep the throttle body butterfly open just enough where the idle will stay high. Switching to a Type-S cruise control cable is the fix for this.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>I normally wouldn&#8217;t care about this specific swap as I don&#8217;t own an RSX or any of the newer 02+ generation Honda\/Acura&#8217;s. I can&#8217;t stand those chassis&#8217;s! But this became&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,99,243],"tags":[],"class_list":{"0":"post-670","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-ecu-wiring","7":"category-k-series","8":"category-k-series-tech"},"_links":{"self":[{"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/posts\/670","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/comments?post=670"}],"version-history":[{"count":1,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/posts\/670\/revisions"}],"predecessor-version":[{"id":2237,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/posts\/670\/revisions\/2237"}],"wp:attachment":[{"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/media?parent=670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/categories?post=670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ff-squad.com\/technet2\/wp-json\/wp\/v2\/tags?post=670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}