Turbo Lag....
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Senior User
Joined: Aug 2010
Posts: 141
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From: Camp Pendleton, CA
Turbo Lag....
Is there anyway to reduce the amount of turbo lag on take off? when taking off from a light even if i punch it, it takes about 5 to 7 seconds to react...just curious.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Probably not on a stock truck. A couple of options are getting your FICM tuned by PHP, which is a LOT less invasive than PCM tuning, or getting a tuner. Try two footed driving--hold the brake and give it a SMALL amount of fuel before leaving a stop and roll into the throttle rather than punching it (which makes lag worse).
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Senior User
Joined: Aug 2010
Posts: 141
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From: Camp Pendleton, CA
ok, thats what i figured, but now i have another question going off of what you said about FICM tuning....is it better than say going the sct route for your truck and do you get the same kind of results?
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
FICM tuning is a different animal than PCM tuning entirely. You don't get the big HP gains that you do with PCM tuning. It's more of an adjustment to driveability than performance. Typical gains are 1-3 MPG and better throttle response although not every truck responds the same.
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Joined: Jul 2004
Posts: 21,113
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From: Ohio
The stock program will lag because of air to fuel with no smoke, a custom program will get rid of the lag and give a better throttle responce. Nothing hot, just a mild street tune or try Partsmans suggestion.
Logistics Pro
Joined: May 2004
Posts: 3,612
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Alot of my turbo lag went away as soon as I got rid of the y-pipe feeding the EGR cooler....almost instantaneous throttle response now.....and ofcourse an SCT tuner
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Lead Driver
Joined: Jun 2007
Posts: 6,757
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From: Corvallis, OR
5-7 seconds lag isn't normal. Tell me this, if you go WOT from a stop, does it barely creep along until it gets to about 2300rpm, then take off like a scalded cat? If that's the case, it sounds like your turbo vanes are stuck in the open position and it needs to be taken apart and cleaned at least.
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