Jeep Grand Cherokee 4.7i V8 258 hp — Stage 1 file (+12 hp)
hp
Stage 1 file for Jeep Grand Cherokee 4.7i V8 258 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Jeep Grand Cherokee 4.7i V8 258 hp ECU
Jeep Grand Cherokee (2005 - WK) 4.7i V8 258 hp — mass-market petrol engine of the passenger segment of the Stellantis group (США, 1941). Stage 1 chip tuning raises power from 258 to 270 hp (+12 hp, +5%) and torque from 425 to 435 Nm (+10 Nm). ECU — Siemens/Continental NGC3. Flashing method: OBD or Bench depending on the unit's protection. The 2005 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.
The Jeep range comprises the Wrangler, Cherokee, Grand Cherokee, Compass, Renegade, Gladiator and Avenger. Jeep shares platforms and engines with Dodge, Chrysler and Ram. Jeep is an American off-road brand, founded in 1941 for military use (Willys MB). Jeep shares engines with Dodge and Chrysler. The Jeep Trackhawk is the flagship, powered by the Hellcat-family supercharged Hemi V8. Jeep's petrol range comprises the Pentastar V6, the Hemi V8 and turbo four-cylinders.
The Jeep community in the US offers a large pool of ready-made Stage files for off-road use. In Europe the Jeep community is growing thanks to the diesel versions. High-output Jeep models are the top-spec Grand Cherokee and Wrangler, with solid headroom for Stage 1.
Frequently asked questions
How much does the power of the Jeep Grand Cherokee 4.7i V8 258 hp increase after Stage 1?
The Stage 1 gain for the Jeep Grand Cherokee 4.7i V8 258 hp is 12 hp (+5%) over the stock 258 hp, for a total of 270 hp. Torque rises from 425 to 435 Nm (+10 Nm).
What is Stage 1 chip tuning for the Jeep Grand Cherokee?
Stage 1 chip tuning of the Jeep Grand Cherokee is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +12 hp with no hardware changes.
Is Stage 1 safe on the high-output Jeep Grand Cherokee 4.7i V8 258 hp?
The high-output Jeep Grand Cherokee 4.7i V8 258 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.
How much does Stage 2 add on the Jeep Grand Cherokee?
Stage 2 on the Jeep Grand Cherokee 4.7i V8 258 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
Which ECU is fitted to the Jeep Grand Cherokee 4.7i V8 258 hp?
The Jeep Grand Cherokee 4.7i V8 258 hp ECU is the Siemens/Continental NGC3. Production versions support OBD access; locked variants require Bench (BDM/JTAG).
What happens to the Jeep Grand Cherokee warranty after chip tuning?
The factory warranty of the Jeep Grand Cherokee does not remain valid after Stage 1 — the manufacturer withdraws its obligations once the ECU software is changed. CHIPOK provides its own warranty on its work and support.
How long does remapping the Jeep Grand Cherokee take?
On the Jeep Grand Cherokee 4.7i V8 258 hp: OBD flash 25-30 minutes, Bench (if required) about an hour. The file processing itself takes 5-30 minutes once the original bin is received.
Is the original file kept when chip tuning the Jeep Grand Cherokee?
Yes, the original ECU firmware of the Jeep Grand Cherokee 4.7i V8 258 hp is kept and can be flashed back at any time. Returning to stock via OBD takes 25-30 minutes.
What is the price of a Stage 1 remap for the Jeep Grand Cherokee?
Stage 1 for the Jeep Grand Cherokee 4.7i V8 258 hp is paid for with CHIPOK credits (1 cr = 1 €). The final amount is set in the calculator, taking the extra options (off functions) into account.