Turbocharged Maruti SX4 VVT Turbocharged Maruti SX4 VVT
Dear Bhpians,
I would like to share my experience of turbocharging my Maruti SX4 VVT with Red Rooster Performance, which is based out of Bangalore.
RRP initially partnered with Haute Car Zone in Chennai, and that is when I got a chance to experience the thrill of being driven in a turbocharged car. Feroz Khan, fitment partner for RRP, and a modern day star in racing, took me out for a quick spin in his turbocharged Swift, and what an experience it turned out to be! A small 1.3 Liter car was as quick as a Laura TSI, with a 0 100 achieved in a blisteringly quick 8 seconds. It was this experience that encouraged me to go for this upgrade for my SX4.
So before we begin, here are some quick facts on the car: Model - Maruti SX4 VVT, ZXI MT (2010 model) Power 104 BHP, and 145 NM of Torque Acceleration & Top Speed 0 to 100 in 11.8 secs: top speed 180 KPH, as recorded by Overdrive India. Tyres - 205/60 R16 Bridgestone Potenza GIII Interiors Seat covers fitted in Jeewajee Car Dιcor, Anna Nagar, Chennai.
I subsequently got in touch with Feroz in Chennai and Mr. Sudhir of RRP in Bangalore, who gave me the details of the package. The components involved in the upgrade have been listed below:
· Turbocharger Garrett
· Intercooler Garrett
· ECU Race Dynamics
· Fuel Pressure Regulator- Turbosmart
· Clutch- Exedy
· Blow off valve - Turbosmart
· Cold Air Intake System BMC
· Free flow exhaust - RRP
· Plumbing for the turbo - RRP Upgrade and Initial Tests
At that time of this upgrade, Feroz was still setting up his garage to support RRP in Chennai, and hence the car had to be taken to Bangalore. It took a month for RRP to complete the upgrade. The delay was due to the Race Dynamics ECU not working correctly with the SX4 VVT model. RRP tried to obtain a Haltech ECU initially, but could not do so as they did not have one for the VVT version, hence the decision to go with Race Dynamics.
After the turbo upgrade, the car was running at 7 PSI boost. When tested on the Dyno, the car was putting out 131 BHP on the wheel compared to 74 in the stock setup, and 186 NM of torque as compared to 115 in the stock setup. During our road test, the car did the 0 100 sprint in 9.5 seconds.
So clearly, it was quite quick compared to the stock SX4, but not as quick as I expected it to be. I also noticed a considerable amount of turbo lag, and as a result, the in gear acceleration suffered a lot. I expressed my concern to RRP but did not get a favorable response immediately. Feroz however promised me that he would take this up with RRP at a later point in time.
Issues post upgrade
After about 2 months of usage the car started developing problems. There was excessive smoke from the exhaust, misfire sounds from the exhaust, and choking near 5000 RPM in all gears. This was very disheartening, and I immediately contacted Feroz and explained the situation. He was very helpful in testing the car and promised to fix all these issues free of cost. He also agreed that the tuning was done very conservatively and the car was definitely not performing as well as it should. Retuning at RRP
Feroz spent a lot of time in identifying all the issues while in Chennai, and then took the car back to Bangalore for a complete re-tuning exercise. The main problem was identified with the RD Piggy Back ECU used on the car. Apparently it was not working well along with the stock VVT ECU. RRP then procured a standalone ECU from RD and fitted it on the car. In this context I would like to thank Mr. Kayan for his help in trying out multiple maps along with Feroz before finalizing the map that suited the car best. The boost was increased from 7 to 8.6 PSI, the car now producing a whopping 142 BHP, and 216 NM of torque at the wheel. I guess the figures at crank could be around 160 BHP and 240 NM of torque, not sure though. Tests post retuning
The car is a complete beast now! 100 comes up in the low 8 second range, with the 205 section Tyres spinning a lot during full throttle in first and second gears. With better Tyres and springs, the car should post much better times. The best part is that the drivability has phenomenally improved. For example, 20 80 in 3rd gear comes up in 10 seconds flat and 40 100 in 4th gear comes up in 12 seconds. Compared to the stock car, this is faster by 5 and 8 seconds respectively. The car was able to get to 200 KPH very easily at 5200 RPM in 5th gear, still a good 1300 RPM left!
Possible Upgrades in the future
· 225/55 R16 Tyres to improve grip and stability
· Tein Suspension or better springs / dampers
· Mintex performance brake pads
That sort of concludes this article. I have shared the Dyno graphs taken at 7 and 8.6 PSI, and engine bay photos. I have also uploaded photos of the seats, fitted by Jeewajee Car Dιcor, who have done an excellent job in fitting the same.
Please post your comments and do let me know if you want any further details regarding this upgrade.
Thanks
Balaji
Last edited by Technocrat : 12th October 2012 at 02:28.
Reason: Added Formatting for better readability, thanks
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