forgot how much turbo lag is normal...help me remember - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 02-22-2014, 06:51 PM Thread Starter
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forgot how much turbo lag is normal...help me remember

Well as it says. My 08 dpf deleted Spartan tuned with s&b seems to be pretty laggy. I do have 35x13.5 tires and 3.73 gears so that may be part of it but the main problem is just that I forgot how its supposed to feel off the line.

More often than not I run the 210 to tune and shoot around town. Never really in a huge hurry and it pulls great once it reaches a certain psi. But off the line it seems to take a second or 2 to reach say 10psi and really go. Its not horribly slow like there's a major problem but the new 6.7 definitely has substantially better throttle response. As does the duramax I used to have

I just miss a certain oomph that puts you back in your seat from 0mph.

Who knows...maybe it was never there and I just never cared to notice.

Let me know. Thanks

2015 F350 Platinum CCSB SRW
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SOLD: Black 08 F350 FX4
Spartan tuned
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20' XD Hoss's
325/60 Duratracs
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post #2 of 12 Old 02-23-2014, 03:38 PM
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no lag here. love my throttle response with my mods. huge reason i dont want to upgrade turbos. slight tap will put you back in the seat immediately.

08 F250 KR
08 F250 XL
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post #3 of 12 Old 02-23-2014, 04:54 PM
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^^^WHS. Love the throttle response in my truck. I've been running the 250 LL on the Spartan and also have an S&B intake

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2006 F250 EC/SB - SOLD
2010 F250 CCSB
Spartan, 5" dp back exhaust, s&b intake, fuel boost 18x9, 315/70r18 toyo mt
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post #4 of 12 Old 02-23-2014, 08:04 PM
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Check your back pressure and fuel. If that's ok it's possible your vgt is stuck or something like that.

08 F250 KR
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post #5 of 12 Old 02-23-2014, 09:34 PM
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I don't have much lag either. I'm on 235hp street tune with S&B and full exhaust upgrade

2010 F350 Lariat CCLB - The Tow Rig - S&B Intake. H&S MiniMaxx. 4" FloPro DP. 5" FloPro DP-Back.

2001 Explorer Sport Trac - The Trail Rig - Dana44 Solid Axle Swap. Spring over conversion in the rear. Rolling on 35s with ~14" of travel at all 4 corners


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post #6 of 12 Old 02-24-2014, 07:53 AM
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Drew did a write up that a fuel sump cured the lag his truck had.

may be onto something I thought was turbo lag..

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #7 of 12 Old 02-25-2014, 03:57 PM Thread Starter
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Bp and fuel rail pressure remember to be normal. How would I check a vgt issue?

With regards to the fuel pump. I get plenty of black smoke at the same time I think its kind of laggy. Which makes me think its getting plenty fuel thus not my issue. Is this theory justified?

2015 F350 Platinum CCSB SRW
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SOLD: Black 08 F350 FX4
Spartan tuned
MBPR DP Back straight pipe
20' XD Hoss's
325/60 Duratracs
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post #8 of 12 Old 02-25-2014, 03:59 PM Thread Starter
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I mainly just feel its turbo lag...not that its not something else...but almost like its not spooling quick enough. I do notice that on a much higher tune like 275 or 310 off the line throttle response is right on. Just not sure why the lower tunes take a few seconds to get goin.

2015 F350 Platinum CCSB SRW
100% stock

SOLD: Black 08 F350 FX4
Spartan tuned
MBPR DP Back straight pipe
20' XD Hoss's
325/60 Duratracs
Leveled
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post #9 of 12 Old 02-25-2014, 04:53 PM
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if I HAD to guess, which i do as i truley dont know. I am betting it is mostly the back pressure not being high enough to spool up right away like the higher power tunes

oops wrong thread....never mind,,,

early 04 f350 6.0 cclb lariat sr
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post #10 of 12 Old 02-25-2014, 06:59 PM
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Turn it to your 310. Spartan makes the 210 laggy to make the truck run clean. Instead of dropping fuel into the engine waiting for air they wait for the air and dump the fuel in.
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