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BMW 4 Series Gran Coupe (G22) 2021> 420i 181 bhp | ECU Remap | Chiptuning

BMW 4 Series Gran Coupe (G22) 2021> 420i 181 bhp Stage 1 tuning
MODEL:
4 Series Gran Coupe
VARIANT:
420i 181 bhp
YEARS:
2021 -
ENGINE SIZE:
1998 CCM
FUEL:
Petrol
ECU TYPE:
Bosch MG1CS***
We at Celtic Tuning develop all of our own software in house using the very latest equipment.
All of our software is developed in our purpose built dyno cells running state of the art Dynocom 4WD rolling roads to ensure accuracy in terms of both power delivery and also to ensure fuelling, boost pressures and exhaust gas temperatures (where applicable) are all within tolerance.
We pride ourselves on our ability to achieve maximum power whilst maintaining optimum reliability.
STAGES

Performance STAGES

Stage 1

Power (bhp)

Original
181

bhp

Modified
300

bhp

Difference

Torque (lb/ft)

Original
221

lb/ft

Modified
340

lb/ft

Difference

STAGE NOTES

Our Stage 1 ECU remap is developed to safely improve your vehicle's power and torque whilst maintaining standard components and remaining within tolerances. <br/><br/> It's the perfect balance of increased power and day-to-day usability, which is ideal for those who want extra performance but not at the cost of additional hardware or reliability.d as our fast road application which is the best all round performance for stock vehicles.

OPTIONS

ADDITIONAL OPTIONS

REVIEWS

CUSTOMER REVIEWS

MODEL:
BMW 3 Series
VARIANT:
320d ED
POSTED: 04 Jun / 2024 / 19:54
ANONYMOUS, UNITED KINGDOM

The Efficient Dynamics model in stock form is painfully slow and extremely dull to drive. I was initially sceptical of having a map installed at home, especially at such a low price but I am over the moon. The performance now is best described as OEM plus-it feels relatively stock even at medium throttle. It’s only when you put your foot down that you really get maximum power and the delivery is extremely progressive. Having had a much more expensive Revo map on my previous car, I can say the two are quite similar in how they come on.

I’m also of the impression that partial throttle now runs a leaner fuel mixture to boost mpg on the motorway. Highly recommended and a must have

MODEL:
BMW 2 Series
VARIANT:
M2 Comp
POSTED: 07 Sep / 2022 / 15:32
NIGEL, UNITED KINGDOM

Hi Guys, having collected the car yesterday afternoon I thought I’d give it another day before getting back to you. All I can say is “WOW”. The previous cars you’ve remapped for me have been non-turbo, n/a engines so no significant changes. The M2C is almost a new car with its stage 1 remap. Significant difference. Brilliant!!

MODEL:
BMW 5 Series
VARIANT:
M5
POSTED: 26 Jul / 2022 / 14:47
BEN, UNITED KINGDOM

Absolutely blown away by the Stage 1 map by Celtic Tuning. Beautifully smoothed out under comfort driving and at a flick of a switch turns into a torque monster that pulls hard and fast! Outstanding performance! Looking forward to replacing the tyres and breaks every week 😉

MODEL:
BMW 1 Series
VARIANT:
125d
POSTED: 12 Apr / 2022 / 17:28
GRAHAM PATON, UNITED KINGDOM

Utilised the eMotion2+ home tuning unit to apply the Celtic Tuning map to my 125d. The car already had some shove, but boost in torque really enchances the response and performance, especially through the mid-range. Request for minor tweak to map supplied within 2 working hours! Superb service, highly recommended.

MODEL:
BMW 3 Series
VARIANT:
330i (B48)
POSTED: 07 Aug / 2020 / 15:51
STEVE KERSLAKE, UNITED KINGDOM

I have had the pleasure of a Celtic remap and gearbox remap the results are better than I expected, I am very pleased with the whole experience, the two engineers that carried out the work were very professional, thank you once again

MODEL:
BMW 3 Series
VARIANT:
330d
POSTED: 26 Mar / 2020 / 13:45
ANONYMOUS, SWAZILAND

An old e46 Diesel with 300 HP :))))

Thank You very much. I'm very satisfied. So much Power

MODEL:
BMW Z4
VARIANT:
35i (N54)
POSTED: 11 Feb / 2020 / 11:57
MARK BUTLER, UNITED KINGDOM

This is the third car I have had mapped by Celtic tuning and it's by far the best. The difference between stock and the modified vehicle is, in a word, outrageous. It's a completely different car.

I later had catless downpipes fitted and returned the car to Celtic for sensor deletion and another dyno run. Always happy with the service and advice offered, facilities are state of the art and you can watch your car on CCTV during the process.

MODEL:
BMW X5
VARIANT:
xDrive40d
POSTED: 26 Apr / 2019 / 09:35
MIKE, UNITED KINGDOM

I've just completed a return trip to Vienna via Germany and Holland. Needless to say, the German autobahns with many unrestricted speed limits gave me a chance to test the capabilities of the re-mapping.

The additional power was very useful for competing with some of the "bully boy" tactics that German drivers with high powered cars used to try and intimidate other drivers - I could easily accelerate out of the way much to their surprise!

But, the best surprise for me was the return on mpg! I completed 1852 miles on the trip and returned 35.2 mpg. I generally cruised at 80 mph with occasional bursts of over 100 mph. Town and village driving was generally restricted to 25/30mph. The weather was reasonable with not too much rain and temperatures sometimes reached 22C but generally cooler about 12C. I had winter Pirelli flat run tyres on 18-inch wheels supplied by BMW which gave me quiet running and additional grip. Most of the trip was completed in the Eco Pro setting (2 wheel drive) with Comfort setting (4x4) when roads were wet or cold.

All in all very happy with what you have achieved for my BMW.

MODEL:
BMW 4 Series
VARIANT:
435d
POSTED: 08 Dec / 2018 / 15:17
MUJ, UNITED KINGDOM

One if the best thing I have done, so happy thatI did this, what a difference it has made, you canfeel the difference straight away andthe power it gains it’s just amazing from308BHP to 400MHP under 800NM of torque, the car feels so much smoothernow and they also said you get 10% increase offuel consumption but I haven’t managed tosee that yet because I am still lovingthe power the car has now.

I willhighly recommend them, I’mso happy I did this.

MODEL:
BMW 3 Series
VARIANT:
330d
POSTED: 04 Nov / 2018 / 21:48
SAM, AUSTRALIA

I have had my 2009 BMW 330D LCI for almost 12 months. As usual with a second hand car there have been a couple of issues. I have had those sorted but the car just seemed to be missing something...

I contacted Celtic Tuning, although they are in the UK and I am in Australia they were extremely helpful. They put me in touch with their representative over here, Jay.

Jay was amazing, his knowledge of my vehicle was truly impressive, he is a credit to Celtic Tuning, very professional and informative, he was open and did not hide any of what he was doing to my car. I found out later that he was a master technician for BMW and Mercedes.

My car is amazing now. The power is insane compared to what it came with stock.

My car now breathes a lot better, uses less diesel, on a recent trip the car was down to 4.4 liters/100km and has a whole lot more power. I could only be happier if I had been given an M3.

AUTOMATIC

HAVE AN AUTOMATIC?

Alongside the engine control unit (ECU) we are also able to provide transmission control unit (TCU) software to help further enhance your vehicle. There is a lot of limitation built into modern gearbox software to help hold back the power gains you are trying to achieve from your engine, our gearbox software overcomes this and helps transform the way the car drives. Some of the modifications include raising maximum torque limiters, faster gear shift speeds, increased clamping pressures to prevent clutch wear, increased engine RPM limiters and much more…

CUSTOM

ARE YOU AFTER CUSTOM TUNING?

For most makes and models we can develop custom software to suit your individual setup. Get in touch with us and let us know your build to see what we can do for you.

DEALER

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