At wot it seems to fall on its face - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 06-22-2013, 09:10 PM Thread Starter
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At wot it seems to fall on its face

Hey guys, my 01 was running real strong when I first put the majority of my mods on. Just recently I did the ccv mod and I also installed the riffraff frx. Truck ran a lot better. But today I took it out and it seems to fall out at wot. Like it will build boost, 23-24 and it will just kinda not go anymore. Feels like its goin as fast as it will go. I don't see any leaks on my up pipes, I check them thou roughly tomorrow but. Could it be a hpop or a boost leak? I know my clutch its old and loud could it be slipping that bad? Any suggestions would be great. Thanks

2001 F250 SD ZF6
4in MBRP straight
DIY intake
TS 6 pos chip
HPX
FRX
CCV mod
Boost fooler
Wicked wheel
She aint the fastest but she runs good
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post #2 of 16 Old 06-23-2013, 12:40 AM
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If you didn't have a boost fooler, I would think your defueling which happens right about 24 psi. It could be your stock wastegate opening, try unplugging the red line. Also check your ICP, you could just be running out of oil on the top end.


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post #3 of 16 Old 06-23-2013, 06:27 AM Thread Starter
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I got the waste gate unplugged and I just replaced icp about three weeks ago. I'm stumped lol

2001 F250 SD ZF6
4in MBRP straight
DIY intake
TS 6 pos chip
HPX
FRX
CCV mod
Boost fooler
Wicked wheel
She aint the fastest but she runs good
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Jeremy- Ft. Collins, CO

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post #4 of 16 Old 06-23-2013, 12:09 PM
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Try the IPR
Mine was faulty. It didn't throw codes and the truck ran fine. But when I replaced it in search of my power loss the truck gained back my top end power.

Along the way I replaced up pipes, turbo wheel, ICP, added a fuel pressure gauge and the biggest difference was the IPR

PIS 230/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
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Dual SD fuel pumps, in tank mods, CNC Fab bowl retain kit. SDK Tunes. Isspro.
Still pretty slow, just less slow now.
Quote:
Originally Posted by peixinho View Post
I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.

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post #5 of 16 Old 06-23-2013, 12:11 PM
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You can try stuff all day long. It could be lack of high pressure oil, lack of fuel pressure, or just defueling as stated. Monitoring live data will tell you what it is/isn't.


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post #6 of 16 Old 06-23-2013, 12:30 PM
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Quote:
Originally Posted by jesilvas View Post
You can try stuff all day long. It could be lack of high pressure oil, lack of fuel pressure, or just defueling as stated. Monitoring live data will tell you what it is/isn't.
Yes that is correct. Sorry I should have been clearer on that.
In my case, all the things I replaced did need to be replaced, just the IPR made the biggest difference to me.
I use the edge insight for data monitoring and that's how I came to replace the IPR in the first place

PIS 230/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
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Dual SD fuel pumps, in tank mods, CNC Fab bowl retain kit. SDK Tunes. Isspro.
Still pretty slow, just less slow now.
Quote:
Originally Posted by peixinho View Post
I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.

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post #7 of 16 Old 06-23-2013, 04:49 PM
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I would check fuel pressure at WOT first.

2002 F250 CCSB Lariet 7.3 Auto
2" helper springs 285/75R16 Toyo M/T
80 gallon fuel tank in bed
DIY 6637
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Ford Transmission @ 407,425 miles 3/24/12
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post #8 of 16 Old 06-23-2013, 04:50 PM
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how about a hole rubbed through the map sensor boost line?
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post #9 of 16 Old 06-23-2013, 05:47 PM
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Quote:
Originally Posted by cfd_shop View Post
how about a hole rubbed through the map sensor boost line?
That should affect all aspects of acceleration and mileage, not just the top end.


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post #10 of 16 Old 07-20-2013, 07:31 AM Thread Starter
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I had a modis scanner on if but it couldn't read fuel pressure for some reason, where can I put a mechanical gauge?

2001 F250 SD ZF6
4in MBRP straight
DIY intake
TS 6 pos chip
HPX
FRX
CCV mod
Boost fooler
Wicked wheel
She aint the fastest but she runs good
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Jeremy- Ft. Collins, CO

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