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OEM+by GT Tunerz · Authorised dealer · Patna

More pull.
Same reliability.

ECU and gearbox remaps, exhausts, turbo and cooling upgrades, tuned to OEM+ limits. The car feels sharper and stays as dependable as it left the factory.

Book a health check See the dyno
Dyno pull · illustrative Running
1k2k3k4k5k6k7k
Engine1,000 rpm
Stage 1 vs stock+0%
StockStage 1

What OEM+ means

Factory plus, not factory minus

  1. 01Inside safe limitsBoost, timing and temperatures stay within the margins the manufacturer built in.
  2. 02Daily drivableSmooth idle, clean cold starts, no warning lights.
  3. 03ReversibleYour original map is saved before we flash it.

Five ways to go faster

Gains depend on the car. We quote real figures after a health check and datalog.

PRF-01ECU remapFuel, boost and timing tuned for more power and torque across the rev range.
PRF-02TCU remapQuicker, firmer shifts and higher torque limits for automatics and DCTs.
PRF-03ExhaustDownpipes, cat-backs and valved tips. A deeper note without highway drone.
PRF-04Turbo upgradesHybrid and upgraded turbos with matching maps, for Stage 2 and beyond.
PRF-05Cooling upgradesIntercoolers, radiators and oil coolers. Consistent power in a 45 °C Patna summer.

Dyno sheet

Stock vs Stage 1

Every tuned car leaves with a before and after sheet. These curves are illustrative until real sheets per model are added.

StockGT Tunerz Stage 1
1k 2k 3k 4k 5k 6k 7k ENGINE RPM POWER Peak power

Pick your stage

Stage 1Map only
What we do
Hardware needed
Power gain

How a remap runs

Check, log, flash, verify

  1. 01Health checkFault codes, plugs, boost leaks, compression
  2. 02DatalogStock run logged and saved
  3. 03Backup and flashOriginal map stored, GT Tunerz map written
  4. 04VerifyRoad or dyno run, logs checked
  5. 05HandoverDyno sheet and map card for your plate

Before you tune

Does a remap affect my manufacturer warranty?

It can. Many makers refuse engine and gearbox claims on a modified car. We restore the stock map before any dealer visit if you ask.

Do I need to tell my insurer?

Yes. Declare performance changes to your insurer so a claim is not refused later.

Will it pass PUC emissions?

OEM+ Stage 1 maps keep catalytic converters and emission controls working. Stage 2 parts are for off-road and track use where the law requires it.

Which cars can you tune?

It depends on the make, engine and gearbox. Book a health check and we will confirm what GT Tunerz supports for your car before any work starts.

Start with a health check

Book a health check