I'm going cobb stage II and I need to port my turbo....worth polishing ?
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Joined: Aug 2003
Posts: 27
From: bowie md
Car Info: 2002 gti1.8t
I'm going cobb stage II and I need to port my turbo....worth polishing ?
Is the VF-39 worth polishing? I need to remove the turbo and port it anyway so is the 100 extra for a polish worth it....will I get any quicker spool?
Dahveed aka Robin Hood
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From: Robbin' the Hood (Claycord)
Car Info: (RIP) '04 STi Silver
the wastegate is already inefficient on the VF39, and you can only port it so much.
if you P&P the whole turbo, it will flow more, but the wastegate is still small and inefficient, and again, you can only port it so much.
I would just get the wastegate ported as much as possible.
Otherwise, just get a 16G or 18G and kiss the VF39 goodbye!
David
if you P&P the whole turbo, it will flow more, but the wastegate is still small and inefficient, and again, you can only port it so much.
I would just get the wastegate ported as much as possible.
Otherwise, just get a 16G or 18G and kiss the VF39 goodbye!
David
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Joined: Jan 2003
Posts: 240
From: PA
Car Info: 2004 WRX STi
Why do you need to remove the turbo for Cobb Stage 2? What is your reason for wanting to port? Boost creep?
With Cobb Stage 2, no need to port anything and that includes the wastegate. The Cobb AP surprisingly controls any boost creep associated with a full catless TBE. People say there is no way EM can fix boost creep and the only way to do so is to port the wastegate. Untrue.
With Cobb Stage 2, no need to port anything and that includes the wastegate. The Cobb AP surprisingly controls any boost creep associated with a full catless TBE. People say there is no way EM can fix boost creep and the only way to do so is to port the wastegate. Untrue.
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man wish i could find some concrete info on this issue. im about to install a tbe helix with catted d/p and have been reading al sorts of info on why you should port it. i am going to be using cobb access port stage two and you said it will make up for it. id like some more info if any is available thanks silvrbulit04
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From: on a beach somewhere nice
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Originally Posted by silvrbulit04
man wish i could find some concrete info on this issue. im about to install a tbe helix with catted d/p and have been reading al sorts of info on why you should port it. i am going to be using cobb access port stage two and you said it will make up for it. id like some more info if any is available thanks silvrbulit04
i am the man to talk to. Recent upgrade was the Helix up pipe/down pipe combo. With or without the Accessport, the check engine light and cruise control light will stay on. The car will run lean and the O2 sensor will go crazy.
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Car Info: 2004 Subaru STI/WRX Silver of course
dsmperformance it right a guy here had the Cobb DP, Blitz exhaust and has the Acess-Port on his STI and had zero problems so PnP is not always needed. If it were me I'd do the stg2 then see if the PnP is required. Just my $.02
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Originally Posted by Rocket Man
i am the man to talk to. Recent upgrade was the Helix up pipe/down pipe combo. With or without the Accessport, the check engine light and cruise control light will stay on. The car will run lean and the O2 sensor will go crazy.
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