Aftermarket Assassins - Polaris RZR XP Turbo / XP Turbo S / 4 XP Turbo / 4 XP Turbo S Big Turbo Tunes for RTD ECU Flash Device

Big Turbo Tunes for 2016-21 RZR XP Turbo or Turbo S

These tunes are designed for customers who already own the HP Tuners Remote ECU Tuning Device for the RZR XP Turbo or Turbo S. Compatible with larger aftermarket turbos (DynoJet, Silber, Agency, Pro XP, Boondocker) or OEM turbo modifications.

Requirements:

• HP Tuners Remote ECU Tuning Device
• AA Billet Wastegate Actuator (7-18 PSI) set to 7 PSI for Pro XP style turbos or 10-12 PSI for other styles
• OEM 2017+ injectors or AA 1200cc injectors only
• Flashing via TDN phone app requires 2 credits; via VCM Editor (Laptop/MPVI2/3/4) requires 4 credits
• Tune adjustments for custom setups: $50 per adjustment after data log review

ECU Type by Model Year:

• 2016-18 models: Standard narrowband black O2 lead
• 2019-20 models: Some have black O2 lead (narrowband); others have blue O2 lead (wideband). Different ECU types.
• 2021 models: All have wideband blue O2 lead

Tune Levels:

• Level 2: 17-18 PSI, 91 octane. 170-175 RWHP (210 crank HP). Safe, reliable pump gas tune.
• Level 3: 18.5-19 PSI, 91-93 octane. 180-185 RWHP (225 crank HP). Strong pull with sustained power.
• Level 3.5: 19.5-20 PSI, 93 octane minimum. 190-195 RWHP (235 crank HP). Aggressive pump gas tune.
• Level 4: 23-24 PSI, 98-100 octane. 215-220 RWHP (265 crank HP). Requires head bolt tightening or ARP studs, spark plug gap at .020", and catch can recommended.
• Level 5: 25-26 PSI, 110 octane. 240 RWHP (290 crank HP). Extreme power delivery. Requires built engine for Race version.
• Level 6 E85: 25-26 PSI, E85 fuel (70-85% ethanol). 240 RWHP. Requires AA 1200cc injectors and high flow fuel pump (included). Cooler engine operation.

Supported Modifications (All Levels):

• AA big turbo
• AA high flow intake tube
• AA high flow charge tube
• AA S3 clutch kit
• AA blow off valve
• AA slip-on exhaust or equivalent free-flowing exhaust

Additional Requirements by Level:

• Level 4: Pre-airbox intake tube, head bolts tightened or ARP studs, oil catch can recommended, spark plugs gapped to .020" (NGK Iridium recommended)
• Level 5-6: Head bolts tightened to 85 ft-lbs or ARP studs to 85 ft-lbs (95 ft-lbs for custom age 625+ studs), spark plugs gapped to .020", catch can (Version 3 recommended), pre-airbox intake tube required. Level 6 requires AA 1200cc injectors.
• Level 5 Race & 6 Race: AA 1200cc injectors and built engine (billet crank, rods, forged pistons, head studs)

Special Notes:

• 2016 models require 2017-style injectors and upgraded fuel pump for Levels 2-5. E85 upgrade requires 1200cc injectors and fuel pump.
• 2019-20 wideband models typically do not require fuel pump upgrade; OEM pump works well even with E85.
• Stock-like driveability with 10-15 RWHP gain over factory turbo on pump gas tunes
• Up to 305 crank horsepower possible with big turbo tunes and supporting modifications
• Tunes sold as-is; minor tweaks may be needed for custom setups