Tuning 101 - tuning with the car off

How to set idle stopper, TPS sensor, and throttle linkage. These are conditions that need to be set properly prior to adjusting your idle, fuel, timing or before addressing drivability issues. If these items are out-of-range prior to changing other variables, changing them later will throw off everything else. It's important to do these things first.

Boost leak testing is covered in another video. It's critical to get boost, vacuum, and exhaust leaks under control before establishing your baseline tune. Links to the boost leak testing video are in this video.

Category:

Autos & Vehicles

Tags:

• tune
• tuning
• 4g63
• turbo
• Mitsubishi
• Eclipse
• 1g
• 2g
• AWD
• FWD
• throttle
• position
• sensor
• plate
• stopper
• linkage
• cable
• bracket
• SAS
• TPS
• ISC
• BISS
• AICV
• gas
• pedal
• airflow
• idle
• DSMlink
• ECMlink

[11secvw]

badass ratchet, period!!!!!!

[Jafromobile]

@marek0086 There is an external closed stopper (the switch) that's adjustable, but it has to be set just at the point of preventing it from sticking closed. In DSMlink, that value is .63, but it recognizes a range of values for closed-throttle. That's the sweet spot. With a volt meter, the values in the video are straight out of the service manual for a 2g.

[Jafromobile]

@marek0086 No. That was a spinal tap quote. A joke.

The throttle plate is on a free-floating axis. There are no stoppers for open and close positions. I had swapped the sensors from a 2g, so they needed to be set. If all I had to do was remove slack from the throttle cable, your method would have worked.

[marek0086]

@Jafromobile~ 11 volts??

Is it linear?

[Jafromobile]

@marek0086 It goes up to 11.  lol

[marek0086]

@Jafromobile~ MORE than 100%??.... how much more?.... 110% ?

[Jafromobile]

@marek0086 If the throttle body you're using has a static open and close point, yes, your method is the fastest way to remove slack in the linkage. My 2g throttle body would have been a better one to use for your example.

This is a 1g throttle body using 2g sensors. It needed adjustment because it was just installed and the 2g sensors were swapped over. It needed a lot more attention than just accelerator cable slack.

[Jafromobile]

@marek0086 You can open a 1g throttle body more than 100%. If you can't look into the throttle body without disassembling half your intake, how do you know you're not opening it past the point where you should? Go back to 8:55. I explain this.

This method a) sets the CLOSED value of the TPS b) ensures you hit closed loop idle c) does the exact same thing, d) doesn't require a second person, e) verifies the throttle plate is open all the way. If it does the same thing, how am I a noob?

[marek0086]

@Jafromobile~ dude you're an absolute noob at this!

U could have just got someone to hold the gas pedal down and then you go see if u can open the throttle any further with your hand!!.... u dont have to rely on TPS value to test this!!

[SpankyWhore]

You should of tested the TPS with a voltmeter! Not everyone has dsmlink. It would really help out alot of people.