• Welcome to Ecoboost Performance Forum. Please log in or sign up.
collapse

weird boost behavior.. opinions please?

Started by TopherSho, February 13, 2017, 01:28:21 PM

Previous topic - Next topic

metroplex

I found that if you are accelerating, let off, then suddenly stab the throttle wide open - it can cause a delay opening the throttle for a full second (verified via datalog). I figured it out and got rid of it, now it feels like a cable throttle. A scenario for this would be merging onto a freeway, having someone cut you off and then leave the lane, and you suddenly opening the throttle to keep up with the rest of traffic only to find yourself sitting idle for 1 second.
Previously: 2014 SHO
12.4 @ 110.9 mph

Current: 2017 Fusion Sport

StealBlueSho

Quote from: metroplex on February 20, 2017, 08:12:10 AM
I found that if you are accelerating, let off, then suddenly stab the throttle wide open - it can cause a delay opening the throttle for a full second (verified via datalog). I figured it out and got rid of it, now it feels like a cable throttle. A scenario for this would be merging onto a freeway, having someone cut you off and then leave the lane, and you suddenly opening the throttle to keep up with the rest of traffic only to find yourself sitting idle for 1 second.

Are you using the throttle to control the boost spikes?

I think sometimes because the throttle plate is all over the place, that can introduce some delays. I know the tunes I run where the throttle is not used to control the load, it's much more responsive. Just like a traditional cable controlled throttle.


Sent from my iPhone using Tapatalk

TopherSho

Quote from: metroplex on February 20, 2017, 08:12:10 AM
I found that if you are accelerating, let off, then suddenly stab the throttle wide open - it can cause a delay opening the throttle for a full second (verified via datalog). I figured it out and got rid of it, now it feels like a cable throttle. A scenario for this would be merging onto a freeway, having someone cut you off and then leave the lane, and you suddenly opening the throttle to keep up with the rest of traffic only to find yourself sitting idle for 1 second.

Wow. That is a nice tidbit.. thank you for sharing.   I will Talk with AJPTuner and see if this is something we can work around.. Can you respond to StealBlueSho's question?  i think the info will be helpful!

2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction