LOST JEEPS :: View topic - source for woven CAC hose sleeves

36psi of boost?
How are you getting 36psi from the turbo and not setting a overboost code?

flash7210 wrote:

36psi of boost?
How are you getting 36psi from the turbo and not setting a overboost code? Badly and Unadvised Gadgetry and Gimmickry really.
Got it due to the Diablo puck and a check valve with a tiny leak. The ECM thinks it's a lot lower than it really is, and the turbo is unable to respond quickly to any ECM signal that it is too high (which apparently didn't happen as no OB code). The gauge is mechanical and tested for accuracy against compressor air pressure gauges.

Yes, mine will OB code and go into limp mode a little over 26 psi under sustained load. :shock:

Your turbo must be screaming? Probably a bit, but at this low RPM, the CFM is still in easy range. Don't think they are designed for those speeds? Definitely not, nor this pressure. :grim:

WWDiesel wrote:

flash7210 wrote:

Yes, mine will OB code and go into limp mode a little over 26 psi under sustained load. :shock:

Your turbo must be screaming? Probably a bit, but at this low RPM, the CFM is still in easy range. Don't think they are designed for those speeds? Definitely not, nor this pressure. :grim:

Check valve where??? I think I"ll stay quiet on that for the present. I don't want to be giving anyone impressionable any stupid ideas. And trust me, it's stupid.

I thought the MAP was measuring the actual boost pressure and sending the signal to the ECM? Under normal circumstances, it is, but trickery can blind it... kinda.

I have the Diablo puck as well on top of a Stage IV Yeti tune. I keep the reastotat about 25% and all is well, crank it up to about 50% and boost pressures can get real serious real quick. Then the ECM will throw it into limp mode as the MAP sensor runs out of range and cannot read the higher boost levels... :roll:

Use a 3 bar MAP :twisted:

I know the turbo is capable of making ~30 psig boost as I have seen it make it on my mechanical gauge. Just not sure how safe it is to continually spin the turbine up to those extreme speeds and boost levels.... :juggle:

I'm sure it's neither safe, nor sane. Occasionally, on the other hand, ... is... well... lets say easily possible, although still nether safe nor sane. 36psi was, well, surprising.
The hose failure was pretty easy to patch up, thanks to "Ideas By Flash(tm)"

I can make 40+ psig boost on my Dodge Cummins and it makes a hell of a difference cranked up, especially on EGT's....but that is another whole animal and the turbo is fully capable of handling it! :roll:

Oh yeah, there are a couple Fords and a Dodge that are over here most weekends that run 80-100psi when racing or recreating. All are running 2 stage systems though. Of course, neither "safe" nor "sane" apply to them either.

Author:	GordnadoCRD [ Sat May 12, 2018 4:30 pm ]
Post subject:	Re: source for woven CAC hose sleeves
Well, for what it's worth, I found the limit of the OLD IDParts silicone hoses when reinforced with the woven braided stuff. A ~4 minute extended pull at ~36 psi, and the hose out of the turbo let loose in spectacular fashion, braided reinforcement and all. Actually, I think when the exterior reinforcement went, the hose went something like bubble gum. I'm actually a little surprised the intercooler didn't go first. Maybe my corner reinforcement helped a little. I really wish I'd had it on a dyno, but there's no way it would maintain that to 4000 rpm, and if I tried I'm pretty sure I'd be doing the turbo again. This was all 2000-2200ish rpm. Looks like I'm buying a different set, or perhaps trying Flash's idea.

Author:	flash7210 [ Sun May 13, 2018 8:39 am ]
Post subject:	Re: source for woven CAC hose sleeves
36psi of boost? How are you getting 36psi from the turbo and not setting a overboost code?

Author:	WWDiesel [ Sun May 13, 2018 3:03 pm ]
Post subject:	Re: source for woven CAC hose sleeves
flash7210 wrote: 36psi of boost? How are you getting 36psi from the turbo and not setting a overboost code? Yes, mine will OB code and go into limp mode a little over 26 psi under sustained load. Your turbo must be screaming? Don't think they are designed for those speeds?

Author:	GordnadoCRD [ Sun May 13, 2018 8:32 pm ]
Post subject:	Re: source for woven CAC hose sleeves
WWDiesel wrote: flash7210 wrote: 36psi of boost? How are you getting 36psi from the turbo and not setting a overboost code? Badly and Unadvised Gadgetry and Gimmickry really. Got it due to the Diablo puck and a check valve with a tiny leak. The ECM thinks it's a lot lower than it really is, and the turbo is unable to respond quickly to any ECM signal that it is too high (which apparently didn't happen as no OB code). The gauge is mechanical and tested for accuracy against compressor air pressure gauges. Yes, mine will OB code and go into limp mode a little over 26 psi under sustained load. Your turbo must be screaming? Probably a bit, but at this low RPM, the CFM is still in easy range. Don't think they are designed for those speeds? Definitely not, nor this pressure.

Author:	WWDiesel [ Sun May 13, 2018 9:50 pm ]
Post subject:	Re: source for woven CAC hose sleeves
GordnadoCRD wrote: WWDiesel wrote: flash7210 wrote: 36psi of boost? How are you getting 36psi from the turbo and not setting a overboost code? Badly and Unadvised Gadgetry and Gimmickry really. Got it due to the Diablo puck and a check valve with a tiny leak. The ECM thinks it's a lot lower than it really is, and the turbo is unable to respond quickly to any ECM signal that it is too high (which apparently didn't happen as no OB code). The gauge is mechanical and tested for accuracy against compressor air pressure gauges. Yes, mine will OB code and go into limp mode a little over 26 psi under sustained load. Your turbo must be screaming? Probably a bit, but at this low RPM, the CFM is still in easy range. Don't think they are designed for those speeds? Definitely not, nor this pressure. Check valve where??? I thought the MAP was measuring the actual boost pressure and sending the signal to the ECM? I have the Diablo puck as well on top of a Stage IV Yeti tune. I keep the reastotat about 25% and all is well, crank it up to about 50% and boost pressures can get real serious real quick. Then the ECM will throw it into limp mode as the MAP sensor runs out of range and cannot read the higher boost levels... I know the turbo is capable of making ~30 psig boost as I have seen it make it on my mechanical gauge. Just not sure how safe it is to continually spin the turbine up to those extreme speeds and boost levels.... I can make 40+ psig boost on my Dodge Cummins and it makes a hell of a difference cranked up, especially on EGT's....but that is another whole animal and the turbo is fully capable of handling it!

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Author:	GordnadoCRD [ Mon May 14, 2018 3:17 am ]
Post subject:	Re: source for woven CAC hose sleeves
WWDiesel wrote: Check valve where??? I think I"ll stay quiet on that for the present. I don't want to be giving anyone impressionable any stupid ideas. And trust me, it's stupid. I thought the MAP was measuring the actual boost pressure and sending the signal to the ECM? Under normal circumstances, it is, but trickery can blind it... kinda. I have the Diablo puck as well on top of a Stage IV Yeti tune. I keep the reastotat about 25% and all is well, crank it up to about 50% and boost pressures can get real serious real quick. Then the ECM will throw it into limp mode as the MAP sensor runs out of range and cannot read the higher boost levels... Use a 3 bar MAP I know the turbo is capable of making ~30 psig boost as I have seen it make it on my mechanical gauge. Just not sure how safe it is to continually spin the turbine up to those extreme speeds and boost levels.... I'm sure it's neither safe, nor sane. Occasionally, on the other hand, ... is... well... lets say easily possible, although still nether safe nor sane. 36psi was, well, surprising. The hose failure was pretty easy to patch up, thanks to "Ideas By Flash(tm)" I can make 40+ psig boost on my Dodge Cummins and it makes a hell of a difference cranked up, especially on EGT's....but that is another whole animal and the turbo is fully capable of handling it! Oh yeah, there are a couple Fords and a Dodge that are over here most weekends that run 80-100psi when racing or recreating. All are running 2 stage systems though. Of course, neither "safe" nor "sane" apply to them either.

Author:	WWDiesel [ Mon May 14, 2018 11:03 am ]
Post subject:	Re: source for woven CAC hose sleeves
GordnadoCRD wrote: Use a 3 bar MAP Got a good one in mind with the right temperature range? PN

Author:	GordnadoCRD [ Mon May 14, 2018 4:54 pm ]
Post subject:	Re: source for woven CAC hose sleeves
MOPAR 3-Bar Map Sensor - All SRT-8 Models 5149056AA https://www.concord-parts.com/item/05149056AA/Chrysler

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