[C-Shark]

Since I am a newbie...I felt this was the best place to post this.

I have read some threads that mention the improved performance from a "tuned ECU".

1) What is an ECU and what is it's purpose?

2) Is this a stock component on an 06 Tib GT?

2) What would be benefit be from tuning an ECU?

3) When an ECU is tuned, what is being changed (air/fuel mixture, timing, rev limiter, or ? ) that causes an improvement in performance?

3) What tools or know-how are required to tune an ECU?

4) My tib currently has CAI and catback exhaust - headers will be added in the near future. What kind of performance improvements might I expect from my car with a tuned ECU?

5) What are the potential problems that can result from an incorrectly tuned ECU?

Thank you. :3_winkthu

 

[kylemorg]

This should answer some of your questions... then you can ask for clarification on the questions that aren't answered there: http://en.wikipedia.org/wiki/Engine_control_unit

Some quick answers for you:
1. See link above
2. Yes, basically all newer cars (mid 1980s +) have them
2B. Not much, a few horsepower.
3. Air/Fuel and timing, typically
4. You'll gain some horsepower from the headers but not much more from tuning.
5. Burnt pistons and valves, blown engine (worst case).

 

[xylophi]

In Korea, there are many shops doing direct modifications to Tiburon's stock ECU. But here in USA I've never heard anything like that for our Tibs. You'll need a piggyback which is an additional computer to the existing ECU.

 

[JCKnights3707]

The main thing ECU's can do that normal fuel tuners can't do is change the redline.

 

[InkTheFlesh]

Yeah, that and spark timing.