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APR IS38 Turbocharger ECU Upgrade

engineAPR is pleased to present the OEM Golf R/S3 IS38 Turbocharger ECU upgrade for GTI/A3 platform vehicles!  

APR’s IS38 Turbocharger ECU Upgrade is designed for use with the factory Golf R / S3 turbo on GTI/A3 platform vehicles and produces an asphalt-shredding 386 HP on 93 octane fuel! It's even compatible with the factory downpipe exhaust system, at lower output levels. Expect lightning fast response coupled with smooth daily driving and a much broader power band that pulls all the way to redline!

Using multiple vehicles across the world and in house, APR’s team of Calibration and Electrical Engineers spent the better part of a year mastering the factory Simos 18 engine management system to work seamlessly with the upgraded IS38 turbocharger unit. All critical aspects of the vehicle’s platform were taken into consideration and monitored through APR’s proprietary engine management logging tools to levels often not seen elsewhere in this industry. Through proper mapping, the ECU fully understands the hardware changes and operates correctly. As such torque delivery is smooth and flat, avoiding compressor surge, limitations in the factory fueling system, and limiting stress on the factory transmission. Cam phasing and valve lift operations are optimized, aiding in turbocharger spool, while allowing the engine to breathe more efficiently at higher engine speeds. Under various operational modes, lambda, ignition advance, requested torque, boost pressure levels and more were painstakingly optimized to produce maximum power without resorting to risky calibration shortcuts.

APR Calibration Report
Stage NAR Fuel ROW Fuel Max HP Max TQ Max HP Gain Over Stock Max TQ Gain Over Stock
- APR recommends and tuned with Sunoco GT 260 for 100 AKI mode and Sunoco GT 260 Plus for 104 AKI mode. Never use lower octane than specified by the mode.
- Max increases are based on APR's actual measured stock values and not those reported by VAG. | RON = ROW Fuel Grades | AKI = NAR North American (RON+MON)/2 Fuel Grades.
- Reported wheel figures measured using APR's in-house Dynapack Dynamometer with a US Spec MK7 GTI with factory IS38 turbocharger, APR Cast Downpipe, APR Intake System and APR Intercooler, using SAEJ1349 correction and an average of multiple runs. Crank figures are estimated based on the measured wheel figures. Results may vary depending upon environmental conditions, vehicle, transmission, vehicle health, operating conditions, temperatures, fuel grade, dyno type, dyno setup, other variables and other modifications.
Stock As Reported by VAG 91 AKI95 RON 210-230 HP 258 FT-LBS    
Stock As Measured by APR 93 AKI98 RON 235 HP 270 FT-LBS    
APR IS38 Turbo - OEM Downpipe 91 AKI95 RON 345 HP 359 FT-LBS +114 HP @ 6,200 RPM +105 FT-LBS @ 4,150 RPM
APR IS38 Turbo - OEM Downpipe 93 AKI98 RON 363 HP 376 FT-LBS +131 HP @ 6,000 RPM +123 FT-LBS @ 4,100 RPM
APR IS38 Turbo - OEM Downpipe 100 AKI104 RON 373 HP 390 FT-LBS +140 HP @ 5,800 RPM +135 FT-LBS @ 4,200 RPM
APR IS38 Turbo - APR Downpipe 91 AKI 95 RON 370 HP 382 FT-LBS +140 HP @ 6,100 RPM +129 FT-LBS @ 6,200 RPM
APR IS38 Turbo - APR Downpipe 93 AKI 98 RON 386 HP 403 FT-LBS +153 HP @ 5,600 RPM +148 FT-LBS @ 4,100 RPM

Race Fuel Information: Higher octane fuel typically allows APR’s engineers to create more power and torque by achieving greater ignition advance. However, on this application, APR’s engineers were able to achieve MBT, or minimum spark timing for best torque, on 93 AKI fuel. MBT is essentially the point where greater ignition advance no longer results in more power and torque.

The APR Development Difference

DirectPort ProgrammingAPR DirectPort Programming:
APR’s DirectPort Programming is now available! Any APR Dealer in the world, connected to the Internet, has direct access to APR’s latest ECU upgrades for loading directly over the vehicle's OBD-II port. This completely eliminates the need to remove and open the ECU for currently available files and can be uninstalled at any time!

APR ECU ExplorerAPR ECU Explorer:
APR’s proprietary ECU Explorer gives APR’s Calibration Engineers unparalleled access to the vehicle’s entire engine management system. Typical commercially available data logging tools, used by most tuners, only allow logging up to 12 engine-operating variables at extremely low data rates. These tools are also limited to a small, specific list of variables. APR’s ECU Explorer is capable of logging every variable found within the ECU with far more variables logged at once, at very high data rates.

APR ECU ComposerAPR ECU Composer:
APR’s proprietary ECU Composer is used for altering the engine management system. With full access to every table, map and variable within the ECU, APR’s Calibration Engineers are not limited to a handful of maps as is common for most tuning companies.

APR ECU AssemblyAPR ECU Assembly:
APR’s Electrical Engineers have the ability to alter the code structure of the ECU. Through code levels changes, APR's Engineers are able to add features to the ECU. Other changes allow higher torque limits than those achievable through only modifying calibration data or using piggyback devices as is the case for many tuners. This allows APR's engineers to often not require transmission software to meet or exceed advertised gains. On the highly modified end, this often allows APR to make turbo upgrades operate without the need for external manual controllers.

Requirements and Recommendations

APR’s IS38 Turbocharger ECU Upgrade is sold as software only. The factory turbocharger necessary for this upgrade is conveniently available at various APR dealers and VW, Audi and Seat dealerships across the world.

  • Turbocharger:
    An unmodified, OEM IHI IS38 Turbocharger is required. APR recommends using the latest factory revision (06K145722H as of Oct 20th, 2015) with APR’s Turbo Muffler Delete and recommends replacing factory one time use nuts, bolts, gaskets, and crush washers. The wastegate may need to be adapted after the install. A tutorial can be found here: IS38 Wastegate Adaptation.
  • Intake:
    The APR Carbon Fiber Intake System is highly recommended. This setup is necessary to achieve the advertised power figures.
  • Exhaust:
    Upgrading the factory downpipe is required for the higher output downpipe software. APR highly recommends using the APR Cast Downpipe System as this system is necessary to achieve the advertised power figures. The factory catback exhaust does not need to be modified.
  • Intercooler:
    Upgrading the factory intercooler is highly recommended. APR recommends using the upcoming APR Intercooler system. This setup is necessary to achieve the advertised power figures consistently.
  • Spark Plugs:
    APR recommends using colder heat-range spark plugs (Ex: NGK-R7437-9), properly gapped to a tighter gap (Ex: 0.024" ±0.002" or 0.6mm ±0.05mm), properly installed and torqued (Ex: Per the manufacturers specifications), and maintained with a shorter changer interval (Ex: 10,000-15,000 mi or 16,000-24,000 km).
  • Transmission:
    APR recommends the APR IS38 TCU Upgrade for maximum performance on DSG / S Tronic models. A clutch upgrade may be necessary on manual transmission vehicles.
  • Oil, Coolant and Lubrication:
    APR recommends using Motul oils, coolants and lubricants with APR's Oil Catch Can System.
Application Guide
Vehicle Market Engine Transmission
Audi A3 - MK3/Typ 8V All 2.0 TFSI EA888 Gen 3 All
Seat Leon – MK3 / Typ 5F All 2.0 TSI EA888 Gen 3 All
Skoda Octavia / vRS – MK3 / Typ 5E All 2.0 TFI EA888 Gen 3 All
Volkswagen Golf GTI – MK7 / Typ 5G All 2.0 TFI EA888 Gen 3 All

Please Note: An APR Dealer MUST check software availability and compatibility before purchase.

Pricing
Stage Minimum Requirements Price
IMPORTANT PRICING AND AVAILABILITY DETAILS:
- Pricing: Please contact an APR Importer for pricing outside the USA.
- Availability and ECU Compatibility: Stages, programs, and features may not be available for all ECUs.
- ECU Revision Notice: Multiple ECU revisions exist for each platform. APR software may be temporarily unavailable when factory updates are applied. An APR dealer can check availability in person, or over the phone if the ECU boxcode/revision is known.
APR IS38 Turbo ECU Upgrade - Existing APR ECU Upgrade Customer OEM IHI IS38 Turbocharger (See Requirements and Recommendations Above) $699.99 Sale! $549.99
APR IS38 Turbo ECU Upgrade - New Customer OEM IHI IS38 Turbocharger (See Requirements and Recommendations Above) $999.99 Sale! $849.99

How to purchase

APR DealerPlease use the APR Dealer Locater Tool to locate an APR Dealer, confirm availability and schedule an appointment.

Please note vehicle manufacturers issue many ECU part numbers and revisions throughout their vehicle lineup. As such, some ECUs may be temporarily unavailable as new parts and/or revisions are released. If the vehicle’s ECU part number and revision is known, availability can be checked at any APR Dealer.

APR Tuned

Phone: (800) 680-7921 Local Phone: +1 (334) 502-5181 Fax: (334) 502-5180 Address: APR LLC, 4800 US HWY 280 West, Opelika, AL 36801

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Notice: Products that affect emissions and do not carry a California Air Resources Board Executive Order are not for sale in California, USA. While we try to keep everything current, APR LLC is not responsible for errors in pricing on this web site. All prices are in USD and are applicable to the United States of America only.