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Discussion Starter · #1 ·
I recently installed the 2012 (DBA) inlets on my 2009 GTR (CBA) and was wondering if anyone has attempted to match them up with the larger 2012 DBA compressor covers? The complete 2012 turbo/manifold from Nissan is $1500 per side so that's not exactly a cost-effective option... Is it possible to purchase just the IHI compressor covers? And if so, who sells them? I'm assuming swapping compressor covers is a bolt-on once the turbos are out of your car?
 

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Fast GT-R
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Hmm. why not just machine them out to match? anyways, at that point, i rather just upgrade the turbo because of the labor involved to get to the turbo; you will have to drop motor to be able to do so. expensive.
 

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I suppose you could machine them out to match, but I just figured it would be easier and there would be less down time if you just swapped the bigger compressor covers on. My friend and I do all the work ourselves so the labor wouldn't cost a thing.

I wonder what kind of gains this mod would net.
 

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I recently installed the 2012 (DBA) inlets on my 2009 GTR (CBA) and was wondering if anyone has attempted to match them up with the larger 2012 DBA compressor covers?
I didn't know the DBA had larger (inlets?) on the compressor covers. Does this dispel the myth that a CBA with 2012 turbo inlets and ECU software will make the same power (530hp)?

Since the DBA also has a slightly different exhaust my guess is a CBA will be slightly down on power, mod-for-mod vs a DBA.
 

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Discussion Starter · #5 ·
Yeah both the compressor cover outlet and inlet pipe are about 4.5mm larger. I know people have dynoed the inlet pipes back to back but I'd be interested in seeing what the gains are with the DBA compressor covers too. I'd be more than happy to conduct this test if I could get my hands on a pair of 2012 compressor covers...

I didn't know the DBA had larger (inlets?) on the compressor covers. Does this dispel the myth that a CBA with 2012 turbo inlets and ECU software will make the same power (530hp)?

Since the DBA also has a slightly different exhaust my guess is a CBA will be slightly down on power, mod-for-mod vs a DBA.
 

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Fast GT-R
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I suppose you could machine them out to match, but I just figured it would be easier and there would be less down time if you just swapped the bigger compressor covers on. My friend and I do all the work ourselves so the labor wouldn't cost a thing.

I wonder what kind of gains this mod would net.
To save the down time, it would make sense. I am not sure if you can just buy IHI cover and throw on it because of compressor piping. I just don't think it worths the amount of the your work invoved with it just to gain few hps. You can probably send your set of turbo to a known turbo shop to change out the cartriges for the same amount of money u will spend on the oem compressor covers. I really think going that route worth every pennies and downtime. Just my 2 cents.
 

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i dont think changing compressor cover is that straightforward.. the blades should also have to be changed too..no?
 
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