Throttle lag trick! Takes 10 seconds!
#61
07-31-2008, 07:57 PM
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Actually, this is not necessarily junk. ECUs can relearn throttle positions and fuel/O2 ratios simply by removing your negative battery and draining your system for a while. Usually like 10mins-1 hr. It removes the memory from your ecu, I usually push the brake pedal a few times and leave the headlights in an on position to fully drain it. The ECU will then be able to learn new a/f ratios and can remap their mixtures. Even a wire driven throttle peddal can still be adjusted through the ECU as to where it will hit WOT. Such as a tune etc.
This is usually recommended after you mod something, new exhaust, air intake system, pulleys etc. Also this is how you train a Nitrous Brain system such as ZEX. Exacttly as stated.
Im by no means saying this will fix anything BUT it may help the ECU relearn where WOT is actually located. I perform this every spring when I get my show/race car out and have the reteach my ECU and ZEX brain where WOT is.
Also, if you paind yellow racing stripes on your truck you are guranteed 20Whp, not just at the crank. NOS stickers naturally add 5hp each.
Ited be interesting to see, but as stated Im not saying this will take away a throttle hang. It might just let the ECU relearn the WOT position.
This is usually recommended after you mod something, new exhaust, air intake system, pulleys etc. Also this is how you train a Nitrous Brain system such as ZEX. Exacttly as stated.
Im by no means saying this will fix anything BUT it may help the ECU relearn where WOT is actually located. I perform this every spring when I get my show/race car out and have the reteach my ECU and ZEX brain where WOT is.
Also, if you paind yellow racing stripes on your truck you are guranteed 20Whp, not just at the crank. NOS stickers naturally add 5hp each.
Ited be interesting to see, but as stated Im not saying this will take away a throttle hang. It might just let the ECU relearn the WOT position.
Thank you.....at least someone gets my point...my wot position must have been way off because it really woke my truck up, but you guys can believe what you want...I know what it did to my truck. Wot position can be way off do to driving styles as well like driving like a ''grandma''. I didn't post it would gain 50 horsepower or anything to that nature, just a very noticeable differnce in my throttle responce
It a simple trick that they even do at the stealership all day long to fix and reset the TPS sensor.
Last edited by 07 Crew; 07-31-2008 at 08:00 PM.
#62
07-31-2008, 08:13 PM
#64
07-31-2008, 08:21 PM
Understanding how the torque based drive by wire system works, this "mod" makes no sense. Regardless of what the pedal does, there are still rate limiters that will slow down response.
And most people don't know this, but I would say more than half of the delayed throttle response when completely flooring it is due to the calibrated factory open loop fueling delay (aka power enrichment mode).
And most people don't know this, but I would say more than half of the delayed throttle response when completely flooring it is due to the calibrated factory open loop fueling delay (aka power enrichment mode).
You might be recalibrating the APPS but not the TPS
#65
07-31-2008, 08:32 PM
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#66
07-31-2008, 08:34 PM
#67
07-31-2008, 09:57 PM
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Ok, so I know my DBW is a little flakey as it's been at the dealer a few times for it. I just tried this technique. It didn't work.
BUT, here's what I did try and I noticed an improvement:
I have no idea why but it seems to have fixed my problem while producing neck-snapping shifts. If it doesn't stay that way I'll need to replace some parts anyway.
BUT, here's what I did try and I noticed an improvement:
- Stop the truck and put it in park
- Turn off the engine.
- Put the pedal to the floor.
- Try and start the engine. It will turn but not start.
- Turn off the ignition.
- Let the gas pedal up.
- Start the engine.
I have no idea why but it seems to have fixed my problem while producing neck-snapping shifts. If it doesn't stay that way I'll need to replace some parts anyway.
#70
08-01-2008, 08:29 AM
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#71
08-01-2008, 11:25 AM
Ok, so I know my DBW is a little flakey as it's been at the dealer a few times for it. I just tried this technique. It didn't work.
BUT, here's what I did try and I noticed an improvement:
I have no idea why but it seems to have fixed my problem while producing neck-snapping shifts. If it doesn't stay that way I'll need to replace some parts anyway.
BUT, here's what I did try and I noticed an improvement:
- Stop the truck and put it in park
- Turn off the engine.
- Put the pedal to the floor.
- Try and start the engine. It will turn but not start.
- Turn off the ignition.
- Let the gas pedal up.
- Start the engine.
I have no idea why but it seems to have fixed my problem while producing neck-snapping shifts. If it doesn't stay that way I'll need to replace some parts anyway.
#72
08-01-2008, 11:27 AM
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#73
08-01-2008, 10:07 PM
#74
08-02-2008, 09:22 AM
#75
08-02-2008, 09:28 AM
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