[Dr.Naren]

Originally Posted by tharian

How will the cat back exhaust help since the downpipe you have now is more free? Or is it a performance catback system.

OE Muffler is also a restriction, 2nd major restriction after cat con.

Also won't the DIA negate the bigger intercooler, rather leave the stock air filter and fit a bigger IC or is it because you need a bigger filter due to the bigger turbo.

Intercooler upgrade is a necessity for me. I am expecting gains with DIA in S-Cross 1.6 because the OE intake is too restrictive.

[tharian]

Originally Posted by Dr.Naren

OE Muffler is also a restriction, 2nd major restriction after cat con.

Intercooler upgrade is a necessity for me. I am expecting gains with DIA in S-Cross 1.6 because the OE intake is too restrictive.

So the catback and then a straight pipe till the end? And it should not be too noisy either because of the cat restriction.

Just hope the DIA doesn't end up sucking in hot air. Getting the right intake position to the filter will be the key. Will be interesting to note the performance gain after these mods.

[Dr.Naren]

I had never expected the car to do 0-100 in 7 seconds and QM in 15.1 seconds. Since it already did great timings, I wanted to check if I can do late 6 seconds ( 0-100 ) and late 14 seconds ( QM ).

I couldn't try any new map , so removed some weight haha!


Did I achieve my target ? YES

0-100 in 6.93 seconds


QM in 14.98 seconds ( Autocar had got 14.97 in Octavia RS ). This should help to understand how quick the car is.


The clutch is slipping in 2nd gear when I shift aggressively, new clutch should help me improve the timings further.

[svsantosh]

It is easy to unbolt/remove the passenger seat too (its much heavier than the rear bench base). Also the rear seat backrest is also a few spanner turns away. Also having a quarter tank or less of fuel may help (in case you had nearly a tankful). Maybe increase the tyre pressure a point or two to decrease drag.

[Dr.Naren]

Originally Posted by svsantosh

It is easy to unbolt/remove the passenger seat too (its much heavier than the rear bench base). Also the rear seat backrest is also a few spanner turns away.

Thanks, will do that . I will time the car again only after new clutch and intercooler upgrade.

Also having a quarter tank or less of fuel may help (in case you had nearly a tankful). Maybe increase the tyre pressure a point or two to decrease drag.

I was running on reserve and tyre pressure ( 33 PSI ) as recommended by Maruti. I will try with 1-2 psi more next time.

[Dr.Naren]

The car has run around 53,000 Kms.

Summary:

1. Maruti Tune / Stock Map : 5000 Km

• Below Average low end
• Mental turbo kick
• Good Mid range
• Not much juice after 3500 RPM
• 0-100 : 11.3 seconds

2. Tune O Tronics : 10,000 Km

• Decent Low end
• Similar or slightly better turbo kick compared to stock map
• Top end was improved
• Tuner was not able to switch off EGR
• 0-100 : 9.7 seconds

3. Wolf Stage 2 : 32,000 Km

• Very good improvement in low end
• Turbo kick was minimal, very linear power delivery
• Mid range has good punch
• Decent gains in top end
• EGR Off. Wolf gives EGR off for all S-Cross 1.6 remaps.
• 0-100 : 7.9 seconds

4. Wolf Stage 3 : 6000 Km

• There is slight drop in low end compared to Wolf Stage 2. Still it's much better than stock and TOT map.
• Mental mid range. This is so fun
• Top end is brutal too. The car loves to redline
• 0-100 : 6.9 seconds

I would say Wolf Stage 2 is the best in terms of money spent vs gains. It just needs decat downpipe and stage 2 remap and the car is almost 3.5 seconds faster than stock to 100 kmph.

Stage 3 gains don't look much on paper wrt 0-100 timings. But, this is a top end diesel monster. There are huge gains in timings at higher speeds. Do note that I have not fully met stage 3 hardware requirements. It would be a proper setup after intercooler and intake mods.

[Dr.Naren]

Update:

The car does really high speeds. It's very difficult for me to resist not pushing the car on empty roads. But, the car is still running on stock intake, intercooler and cat back exhaust. Wolf tuner, Rajiv has advised me not to push the car in this tune without hardware upgrades. Anyways I have not faced a single issue till date with this setup.

I need to complete the pending mods, giving some rest for the beast . Next update after hardware mods...back to my Baleno now, it's too slow..but I like the engine sound .

[Dr.Naren]

Minor Update:

Dad drove the car for around 300 Kms few days back. This was his first long drive after stage 3 setup.

Feedback:

1. There is mild jerk when you gently tap the A pedal at around 1500 RPM.

2. He didn't even use full throttle to overtake any cars. As per him, this much power is not necessary

3. He always believes in factory tune and against engine mods. As per him, factory tune is "comfortable" to drive.

I believe his driving style didn't suit the stage 3 setup as he shifts before 2500 RPM and cruises at 100 kmph. I had never noticed this minor jerk at low RPM .

I observed the same jerk when I specifically looked for it. Dad can't be wrong with around 20 lakhs Km driving experience, Yes you read that right!

I informed my tuner and he says there is a solution for it. I would be getting an update soon.

[Dr.Naren]

Update:

Wolf team visited my place and updated the map. I am really impressed. The overall performance / timings have not changed. The engine is more smoother, low end has improved and there are no jerks at half throttle. FE also seems to have improved. Rajiv has clearly told me that I can't go further up on power without intercooler upgrade , need to get that done.

[Dr.Naren]

4 years / 57k Kms done with Wolf Moto Remap

I had driven 32k Kms on stage 2 setup. Current setup is Stage 3 and clocked over 25k kms.

I haven't faced any issues till date. Happy with the performance and reliability of Wolf tune. My car has gone through lot of 0-100 launches, redlining and what not.. surprised that I didn't have to change the clutch yet .

Intercooler upgrade is pending since long time. Garrett intercooler should be installed soon.

[Dr.Naren]

Good news

The car was put on Dyno at Harmonixx tuning Bangalore. It did an impressive 202 HP / 438 NM at crank. I believe this is the highest figure for any 1.6 diesel engine in the country.



Performance Mods:

1. Wolf Moto Stage 3 ECU Remap (High Boost)
2. Blackworks Decat Downpipe
3. Garrett GTB1549V Turbo Upgrade
4. Garrett Intercooler Upgrade (core rated upto 475 HP)
5. Silicone hoses for IC by Engineering Exponents

[d3mon]

Originally Posted by Dr.Naren

Good news

The car was put on Dyno at Harmonixx tuning Bangalore. It did an impressive 202 HP / 438 NM at crank. I believe this is the highest figure for any 1.6 diesel engine in the country.

These Harmonixx guys use 1.15x SAE correction factor even for turbo engines, which is not valid. SAE correction factor is only really valid for NA engines. After all, the 1-1.5PSI drop in NA engines is significant (14.7PSI to 13.xx PSI), but for a turbo engine like yours with ~30PSI of boost (for an intake manifold pressure of 40+PSI), the 1 PSI drop in atmospheric pressure is almost noise. All of their turbo dynos are vastly overrated due to this factor, even in stock form. Your true output is roughly 175-180HP / 380NM without the correction, which is still a great result.

[Dr.Naren]

Originally Posted by d3mon

These Harmonixx guys use 1.15x SAE correction factor even for turbo engines, which is not valid. SAE correction factor is only really valid for NA engines. After all, the 1-1.5PSI drop in NA engines is significant (14.7PSI to 13.xx PSI), but for a turbo engine like yours with ~30PSI of boost (for an intake manifold pressure of 40+PSI), the 1 PSI drop in atmospheric pressure is almost noise. All of their turbo dynos are vastly overrated due to this factor, even in stock form. Your true output is roughly 175-180HP / 380NM without the correction, which is still a great result.

Yes, the correction factor works great / ideal for NA cars. Turbos will compensate for the boost drop due to elevation. But, there are other parameters like temperature and humidity too which is accounted for in correction factors. IAT wouldn't affect NA cars much but it will affect the turbo charged ones. So, some sort of correction is still valid for turbo cars. 1.15 looks high, but the same was used for all the cars and we compare the gains. That's why we dynod a stock 1.6 too and my car made 72 hp more than stock . I will post all the graphs once I receive them.

Also most of the newer ECUs have elevation based turbo protection maps. It wasn't changed in my car and we were doing 100mbar less boost in Bangalore compared to sea level.

[d3mon]

Originally Posted by Dr.Naren

That's why we dynod a stock 1.6 too and my car made 72 hp more than stock . I will post all the graphs once I receive them.

So stock 1.6 made 130HP on their dyno
72 /1.15 = 62HP. That translates to 120 BHP (stock) + 62 HP gain = 182HP, which is in line with what I had posted above.

I don't understand why Harmonixx keep boasting about inflated dyno numbers from their project cars. Comparison vs stock is the best way and it's great that you have that data too.

[Dr.Naren]

Originally Posted by d3mon

I don't understand why Harmonixx keep boasting about inflated dyno numbers from their project cars. Comparison vs stock is the best way and it's great that you have that data too.

Harmonixx is just being transparent . They post the SAE values for every run. But, your post accuses them of inflating the numbers purposely which is not correct. The values are calculated automatically by the Dyno based on the sensor. It's not a value fed by them.

We can debate if 1.15 is high or not, but your claim of correction factor is not valid at all for turbocharged engines is baseless.

1. Do the turbo cars perform the same at Kanyakumari and Kashmir?

2. Do the turbo cars perform the same at 45 degrees and 15 degrees ambient ?

The correction factors work spot on for NA cars. Most of the Dyno operators use correction factor even for FI motors to "standardise" the runs. Dynapack Dyno at Arka Motorsports is the other best dyno in South India and they also use SAE correction.

Anyways our major objective was to compare the gains and the dynojet dyno at Harmonixx was giving consistent results in every run.