Tuesday, 7 June 2011. Ecu Remap

It was finally time to get the car mapped to make sure all the air/fuel ratios were correct. I kind of figured that if I was going to get the ECU mapped, I might as well make sure everything was operating at full efficiency to get the best value for money. Once the car is mapped, its best to have it done with all modifications in place so that the map is custom and set up correctly for that specific engine set up.

Now was the time to upgrade the fuel and boost system at the same time. I tried to justify it to myself that it was cheaper in the long run getting all the work done at once, but to be honest, Im impatient, and I just wanted it done!

I opted for a GREedy/Trust electronic boost controller, a Walbro 255lts/Hr  fuel pump and a SARD fuel pressure regulator and a Remap of the standard STi ECU. This was all fitted and mapped again by East Coast Customs. I also had them install an AMS sandwich plate adaptor between the oil filter and sump so that I could instal a gauge sensor for the Oil temperature gauge I had been having trouble fitting myself. 

The car was set up on the rolling road and after mapping hit 329BHP and 331 lbs/ft of Torque at 1.2 Bar boost pressure. I could have gone higher but I had specified that I wanted to keep the car on the SAFE side and keep the power figures conservative. After all, the engine was in great working order so I didn't want to over stress it and sacrifice reliability for a couple of extra horses. 

The engine now has 2 boost settings which can be accessed via the boost controller, which is hidden in the passenger side glove box. Low boost is about 1 Bar and and  is used for daily driving. Select the High boost function and the turbo now pumps out 1.2 Bar for maximum power and fun.

To be honest, the low boost is so much fun I very rarely resort to the high setting.

The fuel pressure regulator