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#1 |
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Super Moderator
Join Date: May 2007
Location: Billings, Montana
Posts: 1,034
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Oil is coming out of the intercooler pipes at the couplers? That's a boost leak. Since oil is thicker than air, if oil is leaking air is definitely leaking. That's probably your lack of power and boost. That is also most likely your vacuum leak causing your rough idle, unless you've fixed that already.
I still don't believe your problem is a tune, your car is not significantly drawing any more air in at idle than it was before. Your problems (to me) seem more likely to be a vacuum/boost leak, which it seems you have confirmed oil seeping. To answer your question, you do not need any additional bracing to stop your pipes from leaking. I have the generic intercooler kit you see all over eBay with the 2.5" hard pipes, and I have nothing supporting them other than what they attach to. It took awhile, but after tightening them several times after running the car, I was finally able to seal the connections and no longer have vacuum/boost leaks. The oil leaking into your pipes may likely be from a bad seal in the turbo or possibly oil from the pcv system.
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1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels |
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#2 |
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Super Moderator
Join Date: May 2007
Location: Billings, Montana
Posts: 1,034
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I reread your last post, what type of intercooler pipes do you have? Are they v-band style, do they use silicone couplers, or are they something else?
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1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels |
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#3 |
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3" Exhaust
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 178
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I got silicone couplings from the Driftmotion intercooler they sell; the one with the inlet and outlet on the same side.
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Anyone who has never made a mistake has never tried anything new. |
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#4 |
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3" Exhaust
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 178
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I don't see how the turbo itself is bad but the gasket could need some attention and that might also cause this problem?
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Anyone who has never made a mistake has never tried anything new. |
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#5 |
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Super Moderator
Join Date: May 2007
Location: Billings, Montana
Posts: 1,034
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Yeah, I really doubt the turbo is bad as well. The seal I was talking about is internal to the turbo, and should be new with the rebuild. I don't know if its normal or not, but when I got my new-to-me 57 trim from Driftmotion, mine did leak a little oil into the compressor side (I poured oil in the CHRA to lube bearings and such before install). My understanding is this is normal, and turbos normally do seep a little oil into the cold side.
I had to tighten the $hit out of my silicone couplers, way tighter than I thought they should be, in order to stop the leaks I had
__________________
1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels |
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#6 |
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3" Exhaust
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 178
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Also, I am bewildered that oil is coming out of the bov that I had to put on with a snap ring. Maybe the pressure is too much at that spot and shooting out the place with less resistance? But if a pipe doesn't pop off then oil will come out somewhere even though I have been tightening the crap out of the metal clamps.
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Anyone who has never made a mistake has never tried anything new. |
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#7 |
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3" Exhaust
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 178
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I've never had any kind of problems like this until this freaking Driftmotion intercooler. So wtf, I don't want to go back to the stock intercooler but I just might have to in order to see what is happening. Any ideas?
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Anyone who has never made a mistake has never tried anything new. |
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