[abhikb]

Originally Posted by x-o-b

Where could I get this done? I mean, their website is down and driving all the way to Gujarat from Sikkim seems like quite a task.

Have you blanked out the EGR and unplugged the AMS connector after the remap? Had it been done so anytime before/after?


Oh, I just remembered how I envy the Innova plying in Sikkim. They overtake almost every vehicle given a slight chance, at any point of time irrespective of the speed at which they are driving. I know it isn't the driver because all Innovas wizz through as if they were behind a driving simulator steering wheel.

Is the Innova's performance at low RPMs the secret here, or are there many other factors involved in the beast's performance? The only time I could keep up with these Innovas was when I was driving a Hyundai Venue Facelift (2022 version) once.

You can contact T8 Performance Bangalore (9483600006), you need to remove the ECU and courier it to them in Bangalore, once the remap is done and original map is backed up they will send the ECU back to you. Get it fitted and then drive. Just have a word with them. For having the ease of driving in the mountains, the Stage 1 remap would just do fine.

I have not tried disconnecting the AMF sensor or EGR blanking, the remap has worked fine for me, earlier driving in the mountains was a pain(I do one himalayan Trip every year), but now this issue is gone. I can cruise all day in the hills in 3rd gear without needing to downshift.

[x-o-b]

Originally Posted by abhikb

... you need to remove the ECU and courier it to them in Bangalore ...

How much did the stage 1 tuning cost you?
How about physical mods required like the custom exhaust? Will they ship that as well, and is that included in the price?

I will call them tomorrow. Thanks for sharing the phone number. Much appreciated.

[abhikb]

Originally Posted by x-o-b

How much did the stage 1 tuning cost you?
How about physical mods required like the custom exhaust? Will they ship that as well, and is that included in the price?

I will call them tomorrow. Thanks for sharing the phone number. Much appreciated.

Costed me about 24k back in 2023. For stage 1 you need any mechanical mods, although I was advised to upgrade brakes, but the stock ones have held up well.

[x-o-b]

Originally Posted by abhikb

Costed me about 24k back in 2023.

I had a word with them today and they quoted the same price of 24K for stage 1 remap. The cost of sending the ECM to them and return would be extra.

I inquired about stage 2 tuning as well and it appeared to me that it is just the same as stage 1 except for additional physical mods like improved intercooler system, modded exhaust system and EGR delete. They also advertised their custom rotors for better braking, but I don't see how that helps with engine performance.

Fellas, we get the hint here. My common sense tells me that the following mods would indeed improve performance of the Thar CRDe:

1. Deleting the EGR viz by using a blocking plate (fool-proof) or by vacuum hose disconnect (just ensure that the valve isn't stuck in open position before disconnecting the hose).
2. Installing a better turbo-down-pipe and cat-con delete (aka modded exhaust)
3. Using a more efficient inter-cooler (read inter-cooler on steroids) - I am sure more research into this will yield hacks to optimize the stock inter-cooler. Since it is an accepted fact that a very small amount of oil from the turbo leaks into the inter-cooler always, it would be wise to routinely clean it up. An optimized air intake system in essence.

I would refrain from piggybacking type hacks, but a lot of people swear by the hack and I don't wanna bear their wrath. Have a good evening fellas.

[Kosfactor]

Originally Posted by x-o-b

I would refrain from piggybacking type hacks, but a lot of people swear by the hack and I don't wanna bear their wrath. Have a good evening fellas.

You could simply adopt a different driving style, a bit more aggressive on the downshifts, shift up a bit late etc on the hills , it works beautifully well. Its a square engine and it behaves like one, you have to drive it like an RX100 .

When it comes to ECU mods, your mileage may vary. Someone who runs mostly on highways , doing longer trips may have a different result than someone who drives in the city or hills etc. You may find burst intercooler hoses, clogged up EGR / CatCon etc.

About EGR blanking - there is a certain volume of air expected to reach the cylinder which includes inert exhaust gas. As long as your vehicle is running properly and it has a clean exhaust, there is very rare chance that any clogging wl happen in EGR, especially with Mahindra if you have regular highway runs and its using ORM engine oil, the exhaust bits will be clean always.

[x-o-b]

Originally Posted by Kosfactor

You could simply adopt a different driving style, a bit more aggressive on the downshifts, shift up a bit late etc on the hills , it works beautifully well. Its a square engine and it behaves like one, you have to drive it like an RX100 .

Are you indirectly saying that I could save the 24K on tuning and instead learn to drive the Thar in its optimal power band? Very valid point and great suggestion.

You see, I own a few different vehicles and drive them all regularly. I mostly drive my Tata Tipper then the Pik-up (and Yodha), then I switch to my Alto/Santro in the evenings and Thar during short inter-town trips. Of all the vehicles I keep switching between in a given day, only the Thar feels weird when I drive it. Your suggestion makes sense but somewhere within me a voice keeps reminding me about how the potentials of a beast SUV (my Thar CRDe) was contained and shackled from within as a result of which it is currently limping like a sloth just because those geniuses at Mahindra forgot to program the ECM correctly for the hills.

I have some experience with AVR micro-controllers in C programming language and flashing firmwares for my IoT projects. I root android devices and jailbreak iOSes too and I am so curious to know what really happens when a vehicle ECM is re-mapped? My guess is the changes are in the way various (or perhaps just a few) sensor values are read and interpreted by the chip and responded to.

Example of a change would be:

if value of accelerator sensor (basically a potentiometer) = 3%
then engine RPM = 2500

The stock value could be 20% which gets changed (tuned) to 3% and hence gets reflected as a "great throttle response".

The Thar owner's manual mentions on page 10-8 "Learn to use the power band. The CRDe engine performs best between 2000-3500 rpm"

[Kosfactor]

Originally Posted by x-o-b

Are you indirectly saying that I could save the 24K on tuning and instead learn to drive the Thar in its optimal power band? Very valid point and great suggestion.

It's a lot of money in terms of diesel if you ask me, me thinks like an average farmer. All that Jeep is asking for is you treat it like one, don't baby it.

There is a hill friendly version in the CRDe storm version of Bolero, its automatic like in comparison to Thar but runs out of breath when you want some fun, in comparison because on its own you won't be disappointed with Storm either.

The basic premise of remapping ECU is about more fuel - it being diesel there is little else to do other than that. However whether it would burn as clean and not ruin engine life is the question.

[x-o-b]

Originally Posted by Kosfactor

It's a lot of money in terms of diesel if you ask me, me thinks like an average farmer. All that Jeep is asking for is you treat it like one, don't baby it.

Well, I realized that all the performance shackles that a vehicle (Thar in our case) is forcefully adorned with are by the emission norms and compliance to them thereto.

I used to own a BS-III Bolero Pik-up and I miss driving it. Oh, what a beast it was.

The big question is about morality. Would you kill the environment (EGR delete, cat-con delete) in order to gain performance from your car? Would your conscience allow it? Or is it just a mind game? A trap?

Everyday, I witness the horde of Pharmaceutical plants so conveniently constructed on river banks in Sikkim just so that they could dump gallons of toxic waste onto the waters at wee hours and compare it with the amount of pollution that my Thar would create in 10 years by EGR and cat-con delete, and I think "what the heck". Conscience is a personal choice, and largely depends on the country that you reside in. I would like to live without the guilt of being a part of pollution creator but more than that I constantly survive already with the guilt of having done nothing to control environmental pollution by other modes - plastics, deforestation, river pollution, lead contamination, adulteration of food products, etc., etc.

[KkVaidya]

Originally Posted by x-o-b

Fellas, we get the hint here. My common sense tells me that the following mods would indeed improve performance of the Thar CRDe:

I am sure you have read all the details on the epic MH01V521 and how it behaved at different dress levels. What small details I know is that It had a ETK ECU, the intake plumbing was optimized and exhaust restrictions were removed. It also had a different axle ratio probably from the Scorpio Getaway (meaning you have to change the differential). The intercooler was not changed.
You can connect with Rajith who had done these as far as I know.

[x-o-b]

Originally Posted by abhikb

...and the issue of slow Low end torque especially in the hills is gone.

How does the vehicle respond to idle RPMs or sub-1500 RPMs?
The maximum power of 105 Bhp is tied to 3800 RPM, hence asking.
Did the ECU remap help with that?

[x-o-b]

Hi fellas,

I have decided to bite the bullet and send the ECU for a stage 1 remap by T8 Bangalore. My mod ends here with some additional hardware as summarized as under:-

1. Stage 1 remap by T8
2. EGR delete using a blanking plate
3. Air intake filter upgrade to BMC
4. Brake calipers upgrade to twin-pot type

I decided not to go for a decat exhaust as I am willing to sacrifice a few BHPs in favour of NOx reduction. Instead, once in a while I will get the cat-con cleaned. The EGR delete, on the other hand, will not have any significant detrimental impact on the emissions. I will leave the MAF sensor plugged in after spray cleaning it.

I won't upgrade the inter-cooler as I realized from research that the improvement isn't much.

The above are the only planned upgrades, and I do not intend to modify further like Stage 2, etc, etc. I have a few wish lists like installing custom tail lamps and front fender lamps (popular matrix type available for 2020 Thar) and recessed front bumper fog lamps (the old amber light type). A slight body work would be required for both the front and rear lamps as well as for the fog lamps. I have already installed power windows and centre lock, reverse camera, proximity sensors, TPMS, OBD-II scanner, Android head-unit, a luggage carrier and added front facing rear seats with a left-side-only rear door.

I will post about the improvements post ECU remap, EGR delete and air filter change.

My special shoutout thanks to @abhikb. Your inputs and support were truly overwhelming and so are your other threads which I read through.

Thanks also to @KkVaidya, @Kosfactor and others that I did not mention here but have been equally supportive and deserve equal dose of my gratitude.

Take care fellas.

[abhikb]

Originally Posted by x-o-b

How does the vehicle respond to idle RPMs or sub-1500 RPMs?
The maximum power of 105 Bhp is tied to 3800 RPM, hence asking.
Did the ECU remap help with that?

As I explained earlier, the vehicle now has better response at low RPMs and it shows that urgency to gain speed. The power and torque delivery is also better at higher rpm.

Originally Posted by x-o-b

Hi fellas,

My special shoutout thanks to @abhikb. Your inputs and support were truly overwhelming and so are your other threads which I read through.

Take care fellas.

Glad my inputs were of help to you, do post your experience once the mods and remaps are done.

[Venom_rider]

Originally Posted by x-o-b

Hi fellas,

I have decided to bite the bullet and send the ECU for a stage 1 remap by T8 Bangalore. My mod ends here with some additional hardware as summarized as under:-

1. Stage 1 remap by T8
2. EGR delete using a blanking plate
3. Air intake filter upgrade to BMC
4. Brake calipers upgrade to twin-pot type

Go for it... I have done Stage 1, EGR Delete along with the custom downpipe. We often offroad in a riverbed (loose sand), where responsiveness is key and the these mods have made a huge difference.

[x-o-b]

Originally Posted by abhikb

... do post your experience once the mods and remaps are done.

Will surely do so. Thanks.

Originally Posted by Venom_rider

Go for it... I have done Stage 1, EGR Delete along with the custom downpipe. We often offroad in a riverbed (loose sand), where responsiveness is key and the these mods have made a huge difference.

I decided not to do the custom downpipe but opted for a BMC filter instead. The remap alone should satisfy me.

[x-o-b]

Originally Posted by x-o-b

Hi fellas,

I have decided to bite the bullet and send the ECU for a stage 1 remap by T8 Bangalore. My mod ends here with some additional hardware as summarized as under:-

1. Stage 1 remap by T8
2. EGR delete using a blanking plate
3. Air intake filter upgrade to BMC
4. Brake calipers upgrade to twin-pot type

Originally Posted by Blooming Flower

The entire braking system of F/L Thar post-2015 is of Scorpio 2.6 Slx. This includes all the non-friction and friction components viz. the Tandem 9" booster, 26.99mm M/Cyl, slave cylinder, twin pot callipers, brake pads, LSPV etc., except the brake tubings length and bents for obvious reasons. They are pretty much interchangeable with each other.

Hi, are you sure the Thar CRDe F/L already comes equipped with twin-pot calipers? I was planning to upgrade mine to twin-pot. Silly I haven't yet physically looked at them

While my ECU travels to Bangalore for the remap, I intend to change both wheel cylinders and install a brand new LSPV as well. I am a bit worried about braking anticipating the new increased bhp and torque after remap. I am also doing a full flush of brake fluid replacing all the DOT 3 with DOT 4, and doing the same with the clutch fluid as well.