forgot how much turbo lag is normal...help me remember - Ford Powerstroke Diesel Forum
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Old 02-22-2014, 06:51 PM
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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
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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.
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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

Sent from AutoGuide.com Free App
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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.
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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
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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..
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Old 02-25-2014, 03:57 PM
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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?
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Old 02-25-2014, 03:59 PM
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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.
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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,,,
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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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