Winter Re-Tune for Turbo Optra

[exist3nce]

Since the weather has been getting alot colder here lately, we had to touch up the fuel maps so I don't run too lean. Also I was interested to hear how my car sounds with the new exhaust and wastegate dump recirculated back into the exhaust.

Video: Turbo Optra Re-Tune -2.5" Turbo-back exhaust -Wastegate Dump Re-circulated -Re-tune for cold winter weather - Video

[jurupa]

I like the sound of your car more than the last video posted. But it soudns like your car is having hicups with the blow of valve. Also it looks like on the dyno you have no bottom end and then at some RPM (I couldn't read the screen that well), it jumps high then drops slowish.

[exist3nce]

Originally Posted by jurupa

I like the sound of your car more than the last video posted. But it soudns like your car is having hicups with the blow of valve. Also it looks like on the dyno you have no bottom end and then at some RPM (I couldn't read the screen that well), it jumps high then drops slowish.

The way the dyno works is that you can set the start and finish RPM. You can set the start at 2000rpm and finish at 6500 for exmaple. There is also an intitial "settle" time where the dyno will hold the car at the start RPM for about 2 seconds or so. About the BOV, I'm quite sure what you mean, but thats the way it always sounded on my car.