Topic Sponsor
2011+ Engine Related Questions Sub-Forum to the new engines that debuted in 2011.

School me

Thread Tools
 
Search this Thread
 
Old 08-08-2012, 08:26 AM
  #1  
Senior Member
Thread Starter
 
_Flea_'s Avatar
 
Join Date: Dec 2009
Posts: 801
Likes: 0
Received 67 Likes on 39 Posts
Default School me

When I test drove the EcoBoost, I noticed there was a big dead spot when just punching it from a stop. I'm sure that's because the turbos weren't spooled up. I noticed the same thing when cruising at a lower speed at times, but other times it would take off pretty dang quick from a roll. Again, I'm assuming it has to do with whether or not the turbos are spooled. I'm new to turbo engines. Can someone explain to me the proper way to spool the turbos to get a quick launch without the huge dead spot in the beginning?
Old 08-08-2012, 08:32 AM
  #2  
V-8 Sounds Great
 
boosted150's Avatar
 
Join Date: Jun 2011
Location: Anchorage, Alaska
Posts: 518
Received 111 Likes on 38 Posts

Default

Originally Posted by _Flea_
When I test drove the EcoBoost, I noticed there was a big dead spot when just punching it from a stop. I'm sure that's because the turbos weren't spooled up. I noticed the same thing when cruising at a lower speed at times, but other times it would take off pretty dang quick from a roll. Again, I'm assuming it has to do with whether or not the turbos are spooled. I'm new to turbo engines. Can someone explain to me the proper way to spool the turbos to get a quick launch without the huge dead spot in the beginning?
"boosted launch" is what comes to mind

This topic has been discussed many times. The lag is related to the doggy stock tuning, the turbo spool, and the drive-by-wire system.

If you want to get rid of that lag, tune it. My 5star tune got rid of the lag almost completely. Before, you hit the gas, and the truck had to think about it for a minute before it decided to launch you back in the seat. Now, you'll still notice a slight delay as the turbos spool, but when you hit the gas, you go.
Old 08-08-2012, 08:53 AM
  #3  
Senior Member
Thread Starter
 
_Flea_'s Avatar
 
Join Date: Dec 2009
Posts: 801
Likes: 0
Received 67 Likes on 39 Posts
Default

Is that the only way to get rid of that big lag....tune it? I'd like to tune the truck eventually, but I want to wait until it's out of warranty. I don't have the truck yet and I don't want to kill the warranty right out of the gate. I knew tuning it would reduce that lag, but I wasn't sure if there was just a proper way to launch it with the turbos. With the Lightning I used to have, I'd just floor it. That just didn't work with the EcoBoost. Difference between supercharger and turbos, I guess.
Old 08-08-2012, 09:08 AM
  #4  
Junior Member
 
FloridaBoost's Avatar
 
Join Date: May 2012
Location: Manatee, Florida
Posts: 27
Likes: 0
Received 2 Likes on 2 Posts
Default

brake boost to around 2000-2500 rpm from a stop. Put her in manual mode,let her rip....
Old 08-08-2012, 09:15 AM
  #5  
Senior Member
 
Centexguy's Avatar
 
Join Date: Jul 2012
Posts: 1,398
Received 130 Likes on 102 Posts
Default

Tuning is the main thing. My dads 08 corvette used to have the same dead spot when he first got it. We had it tuned and now it responds instantly. Which can make for a fun ride if you aren't prepared for it LOL
Old 08-08-2012, 09:43 AM
  #6  
Senior Member
 
maplelakeduckslayer's Avatar
 
Join Date: Nov 2011
Location: Albertville, MN
Posts: 1,521
Received 196 Likes on 140 Posts

Default

There will always be some lag as turbos are spooled by the exhaust. No exhaust gas=no boost. You have to be spinning some RPM's to spool the turbos.

Like said, you can brake-boost it, or just put up with it. Tuning helps take the drive by wire lag out and torque managemnet out but you can't get rid of the turbo lag. But in all honesty, it isn't that bad on these trucks as they have small turbos which spool quicker.
Old 08-08-2012, 10:15 AM
  #7  
Senior Member
Thread Starter
 
_Flea_'s Avatar
 
Join Date: Dec 2009
Posts: 801
Likes: 0
Received 67 Likes on 39 Posts
Default

Alright, so using the brakes to get the turbos spooling will help the launch from a stop. That's good to know. I assume there's really nothing that can be done to help it from a roll, other than tuning...? Will simply swapping out the exhaust help the turbos spool quicker?
Old 08-08-2012, 10:29 AM
  #8  
Senior Member
 
kmac1036's Avatar
 
Join Date: Dec 2009
Location: Iowa
Posts: 993
Received 74 Likes on 62 Posts

Default

Originally Posted by _Flea_
Alright, so using the brakes to get the turbos spooling will help the launch from a stop. That's good to know. I assume there's really nothing that can be done to help it from a roll, other than tuning...? Will simply swapping out the exhaust help the turbos spool quicker?
was an issue on the 1st Gen Powerstroke, the downtube that runs from the turbo past the firewall & then bolts into the exhaust pipe going thru the cat & muffler was very restrictive. On these new trucks, putting new exaust system usually doesn't add any power, or not much, because it's pretty free flowing already. it's designed to be quiet, which some folks (re: myself included) like to hear that low rpm V8 rumble... unless you tune it & put the intake on it too I have my doubts new pipes would make a difference. power brake to spool up is about it unless you tune it I guess...

FWIW, my 10' 3v 4.6 does the same damn thing.
Old 08-08-2012, 11:12 AM
  #9  
Member
 
portajim's Avatar
 
Join Date: Jun 2012
Posts: 44
Received 5 Likes on 2 Posts
Default

Correct me if I'm wrong, Just because your foot is on the floor from a stop does not mean your throttle is at 100%. I know my old vehicle limited certain gears in terms of boost and throttle via the Throttle Position Sensor. A tune would take care of this issue.
Old 08-08-2012, 12:02 PM
  #10  
Senior Member
 
clubsfit's Avatar
 
Join Date: Mar 2012
Location: West Bend, WI
Posts: 410
Received 31 Likes on 27 Posts

Default

I have found the fastest way to launch without power breaking, is go about half throttle until 2000rpm, THEN full throttle. Just seems to work. Now the most fun way is tune it then have fun.


Quick Reply: School me



All times are GMT -4. The time now is 01:06 AM.