Powertrain and Tuning

Service

Derestriction

This isn't really a modification most do at home, but it has to be the most popular one for new bikes. The bike is transformed into a precision racing beast when it's derestricted (its true form). This is generally the first thing everyone has done post-delivery. Usually you need to have a dealer do it— they remove the exhaust baffle cones and throttle stop, and remap the ECU (very important!). Alternatively, you can buy a TuneBoy ECU reprogrammer and do it yourself, guided by engine tuning 101.

Reroute Vent Hoses to Catch Tank(s)

From the factory, the various vent hoses purge into the airbox. This means that oil probably will end up in your airbox, which is not a good thing. You'll want to replace those hoses with clear hose, so you are able to see if oil is being purged when it shouldn't be, and where it's coming from. Additionally, you should install a catch tank (or two, if you would like to monitor gearbox and engine oils separately) and route the vent hoses there rather than the airbox. Bonz makes a nice catch can. Pics to come.

Proper Crankcase Hose/Wire Routing

Ensure the crankcase hose and wire are not routed near the sprocket/chain, as they can be easily damaged. This is what they should look like:

crankventhose.jpg

Products

Iridium Spark Plugs

Iridium spark plugs will make your bike start easier and run cleaner. Replace the stockers with NGK CR8EIX plugs.

Unifilter

A single or dual stage foam filter, for the sxv or rxv, respectively, will improve intake airflow. Pairing this with a better exhaust can lead to significant power gains. Dyno chart to come.

Tuning the Engine Control Unit (ECU)

  • TuneBoy (stock ECU reprogrammer for fuel maps, ignition timing, etc.)
  • DynoJet PowerCommander (piggyback unit for fuel map tweaking)

Exhausts

  • SXV
    • GPR
    • Arrow
    • Silmotor
    • Termignoni
  • RXV
    • GPR
    • Silmotor
    • Akrapovic

TuneBoy Tunes

NOTE: The vdB maps are meant for only vdB engines and may damage a standard SXV engine. Therefore, I have password protected those maps to prevent owners from unintentionally destroying their bikes. If you understand what you're getting into, contact me on ApriliaForum for the password.

Tune Contributor Description
SXV 450
14018Tune.dat TuneBoy standard exhaust (de-restricted)
14009Tune.dat TuneBoy Termignoni exhaust
14021Tune.dat TuneBoy Silmotor exhaust
14023Tune.dat Aprilia-SXV.de Akropovic exhaust
14019Tune.dat TuneBoy standard exhaust (restricted), for use with 95 RON and 85 MON fuel (USA)
14020Tune.dat TuneBoy standard exhaust (restricted), for use with 100 RON fuel (Japan)
SXV 550
15017Tune.dat TuneBoy standard exhaust (de-restricted)
15008Tune.dat TuneBoy Termignoni exhaust
15020Tune.dat TuneBoy Silmotor exhaust
15022Tune.dat Aprilia-SXV.de Akropovic exhaust
15018Tune.dat TuneBoy standard exhaust (restricted), for use with 95 RON and 85 MON fuel (USA)
15019Tune.dat TuneBoy standard exhaust (restricted), for use with 100 RON fuel (Japan)
SXV 450 (v.d.B.)
14022Tune.zip Aprilia-SXV.de Arrow exhaust (rev. limiter: 13,000)
SXV 550 (v.d.B.)
15021Tune.zip Aprilia-SXV.de Arrow exhaust (rev. limiter: 12,500)
RXV 450
24020Tune.dat TuneBoy standard exhaust (de-restricted)
24009Tune.dat TuneBoy Termignoni exhaust
24010Tune.dat TuneBoy Silmotor exhaust
24023Tune.dat TuneBoy Akropovic exhaust
24021Tune.dat TuneBoy standard exhaust (restricted), for use with 95 RON and 85 MON fuel (USA)
24022Tune.dat TuneBoy standard exhaust (restricted), for use with 100 RON fuel (Japan)
RXV 550
25016Tune.dat TuneBoy standard exhaust (de-restricted)
25007Tune.dat TuneBoy Silmotor exhaust
25019Tune.dat TuneBoy Akropovic exhaust
25017Tune.dat TuneBoy standard exhaust (restricted), for use with 95 RON and 85 MON fuel (USA)
25018Tune.dat TuneBoy standard exhaust (restricted), for use with 100 RON fuel (Japan)

Note: Pics courtesy of SLORider and other members of ApriliaForum.


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