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6.4L Performance Parts Discussion What has or has not worked for you?

 
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post #1 of 8 Old 07-22-2009, 12:24 PM Thread Starter
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just wondering

has anybody took the dpf/cat delete off with the spartan tune and dynoed it and what numbers...and did you then put just the dpf pipe delete and leave the cat on and dyno it....a guy told me he lost power when he took the cat off just getting everybodys opinion
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post #2 of 8 Old 07-22-2009, 12:53 PM
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I don't see how someone could make less power with better air flow. He probably lost power because he didn't reload his tune. The ECM on these trucks have adaptive learning causing the power to decrease overtime. If you don't reload the tune right before the dyno run the numbers won't be at full potential. I highly doubt your buddy lost power by increasing airflow....that makes no sense to me

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Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #3 of 8 Old 07-22-2009, 12:56 PM Thread Starter
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ya bc im wanting to order the stuff as soon as i sell my old truck and i cant decide on what pipe to use...i just didn't know which one was better for horsepower
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post #4 of 8 Old 07-22-2009, 01:19 PM
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Originally Posted by mikey8865 View Post
ya bc im wanting to order the stuff as soon as i sell my old truck and i cant decide on what pipe to use...i just didn't know which one was better for horsepower
The full delete from the downpipe back is going to give you better airflow, but I doubt it will provide more power, atleast not a noticeable amount. You won't get any real sound increase unless you delete the DPF and Cat though...

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #5 of 8 Old 07-22-2009, 04:45 PM
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Quote:
Originally Posted by 08stroker250 View Post
I don't see how someone could make less power with better air flow. He probably lost power because he didn't reload his tune. The ECM on these trucks have adaptive learning causing the power to decrease overtime. If you don't reload the tune right before the dyno run the numbers won't be at full potential. I highly doubt your buddy lost power by increasing airflow....that makes no sense to me
So would the standard disconnection of the batteries for 20 minutes clear this adaptive learning like on a Ford car, or is it permenantly stored until the computer is reflashed/dtc cleared?

Could explain why I have LOST power from my cat back and S&B!

2008 FX4

Fabtech 8 w/37's

Intake, delete pipe/exhaust, Spartan/KEM tuning

567 RWHP/1128 RWTQ

13.3 @ 103.9 MPH
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post #6 of 8 Old 07-22-2009, 05:25 PM
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Originally Posted by AED F250 View Post
So would the standard disconnection of the batteries for 20 minutes clear this adaptive learning like on a Ford car, or is it permenantly stored until the computer is reflashed/dtc cleared?

Could explain why I have LOST power from my cat back and S&B!
It has to be fixed through tuning.....which is something that Matt is trying to fix

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post #7 of 8 Old 07-22-2009, 05:36 PM
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To me, it was worth buying the cat delete too just so I dont have to mess with the damn dpf gasket.

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Chris Carter
------------------

My Stable:

2008 Ford F-350 XLT, 4x2, Reg. cab
(mods DPF/Doc delete, Spartan, and S&B CAI)
2007 Shelby Gt, CSM: 07SGT4578
2007 Ford Fusion (Wifey's)
2006 Honda 400EX
2005 Ford F-150 XLT, 5.4L
1969 Ford F-250, 390 4-spd
1967 Ford Mustang, C-code.

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post #8 of 8 Old 07-23-2009, 08:58 AM
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Originally Posted by 07SGT4578 View Post
To me, it was worth buying the cat delete too just so I dont have to mess with the damn dpf gasket.
I've also heard it's an easier uninstall/install by removing both at the same time as one piece rather then as two pieces.

Shaun

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