Sucking noise from Volant air box - Diesel Forum - TheDieselStop.com
'99 & up Upgrades and Aftermarket - 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 9 (permalink) Old 06-14-2017, 01:17 PM Thread Starter
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Sucking noise from Volant air box

I have a 2001 F350 7.3 with the Volant closed box filter, DDP injectors, MBRP 4"exhaust, and a Bullydog programmer. When I'm pulling our rv (13k#) and have to get on it up a hill it makes a sucking noise, egt goes up, and boost goes down. Any ideas?
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post #2 of 9 (permalink) Old 06-14-2017, 01:53 PM
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Are you hearing turbo surge?

Do a search on YouTube.

Also, what type of DDP injectors did you buy.
Specifically what cc and nozzle size

Like 160/0 or 160/80?

Unless you got your bullydog retuned they won't work well
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post #3 of 9 (permalink) Old 06-14-2017, 02:41 PM Thread Starter
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DDPs website says they're similar to a 140cc with 25% nozzles. I haven't had any turbo surging. I'll have to look into the Bulldog issue. Thanks
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post #4 of 9 (permalink) Old 06-14-2017, 03:58 PM
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The smallest aftermarket nozzle is a 30%.

They are probably stock AD's with a 30% nozzle slapped on.

Unless you had the bullydog retuned for the nozzle change it's not making much of a difference.

Post a video of what you hear. I'm not quite sure on the noise.

It's not the fan clutch engaging is it?
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post #5 of 9 (permalink) Old 06-14-2017, 03:59 PM
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It also could be the ebpv closing for some reason. What does boost drop too?

Have you done a boost leak test
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post #6 of 9 (permalink) Old 06-14-2017, 07:53 PM
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I would highly suggest that you get something better than the bullydog. This unit is terrible for your truck


Sent from AutoGuide.com Free App

F350 2002 7.3

auto, 37/13.5/20 open country, Bushwaker cut-out flare, Bilstein 5100, Maxtow gauges (EGT, Trans temp, Boost), 4 inch diamond eye turbo back axel drop with BTM muffler, S&B intake, RR AIH plug, billet FPR with gold spring, CNCfab Sgt 1 HPOP, CNCfab HPOP line with cross over, CNCfab 4 line fuel kit, ARP heads stud, RDP plenum reinforcing insert, complete CAC intercooler boot kit, full engine seal and gasket kit, 360* turbo rebuilt, WWII, EGPV delete, dark blue CPS, Hydra chip with SDK tunes, Polished compressor manifold, HD coolant, 203* thermostat, Transgo HD kit, Energy suspension bushing kit, front and rear diff fully rebuilt with 4:88 gear ratio, Z36 powerstop heavy hauling brake kit, headlight relay mod, Fumoto drain valve AND STICKER

F350 2008 6.4 (sold)

TT 26' Springdale 2014
7x17 enclose trailer (shop) 2012
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post #7 of 9 (permalink) Old 06-16-2017, 11:58 AM
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Quote:
Originally Posted by yan7gin View Post
I would highly suggest that you get something better than the bullydog. This unit is terrible for your truck


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Yes. Off the shelf tunes do not work very well, especially with larger than stock injectors.

To the OP... You may be hearing a boost leak. It is pretty normal to hear the air whoosh through the intake, especially after a shift. However, if your boost is dropping and EGT's go up when you hear this noise, it is probably a boost leak.

Turbo surge sounds like a very fast chirping noise. As stated, you can find examples of this on YouTube.
post #8 of 9 (permalink) Old 06-16-2017, 09:35 PM
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[QUOTE=yan7gin;4427586]I would highly suggest that you get something better than the bullydog. This unit is terrible for your truck


I had a Bullydog on my truck, sent it back because it died. Reinstalled it, but too much black smoke. It's resting in the top of my tool box. I run a Banks six gun stacked on a Big Hoss tuner from Banks as well. It works great and it will change tunes on the fly.
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post #9 of 9 (permalink) Old 06-17-2017, 10:46 PM
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[quote=mbrahmer;4428674]
Quote:
Originally Posted by yan7gin View Post
I would highly suggest that you get something better than the bullydog. This unit is terrible for your truck





I had a Bullydog on my truck, sent it back because it died. Reinstalled it, but too much black smoke. It's resting in the top of my tool box. I run a Banks six gun stacked on a Big Hoss tuner from Banks as well. It works great and it will change tunes on the fly.

You need a chip with custom tune. Way better engine and trans tuning


Sent from AutoGuide.com Free App

F350 2002 7.3

auto, 37/13.5/20 open country, Bushwaker cut-out flare, Bilstein 5100, Maxtow gauges (EGT, Trans temp, Boost), 4 inch diamond eye turbo back axel drop with BTM muffler, S&B intake, RR AIH plug, billet FPR with gold spring, CNCfab Sgt 1 HPOP, CNCfab HPOP line with cross over, CNCfab 4 line fuel kit, ARP heads stud, RDP plenum reinforcing insert, complete CAC intercooler boot kit, full engine seal and gasket kit, 360* turbo rebuilt, WWII, EGPV delete, dark blue CPS, Hydra chip with SDK tunes, Polished compressor manifold, HD coolant, 203* thermostat, Transgo HD kit, Energy suspension bushing kit, front and rear diff fully rebuilt with 4:88 gear ratio, Z36 powerstop heavy hauling brake kit, headlight relay mod, Fumoto drain valve AND STICKER

F350 2008 6.4 (sold)

TT 26' Springdale 2014
7x17 enclose trailer (shop) 2012
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