opinions wanted Greddy profec bII VS. Apexi EVC-R

Discuss the RB20, RB25 and RB26 series engines.
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blues14
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Ok, i am looking into ebc's and for my price range, these are the two i am interested in. I want something that i can dial in a Psi to be ran and have it hold consitantly without boost spikes and hopefully decrease lag a little.. Are these two good options for me? input please.


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Carl H
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profec b spec 2 is notorious for poor boost control and spiking.avcr will control boost well but takes loads of time to set up right.i say find an old profec b and get that, they arnt too terribly expensive used and work GREAT.ive got a profec e-01 and auto mode sucks like the spec2 but the manual mode is insane.

CursedGTR
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I would agree with that, the AVC-R is a kick *** controller if you have the time to dial it in. The E-01 in my opinon is a little easier to tune and holds boost very well. I like them both, but my choice would be the E-01.

Bluefire
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I find it annoying also that the greddy controller uses percentages to set boost, not actual psi or kpa. Go for the avcr. Or if you can save up a little more, go with the hks or blitz(Top Controllers)

-Bluefire

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blues14
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is the apexi evc-r really that much trouble to set up? i'm only looking to run low setting at 10 psi and high at 13psi. nothing gear based or complex. but i want to be able to enter a psi and have it held

s13_drifter
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Bluefire wrote:I find it annoying also that the greddy controller uses percentages to set boost, not actual psi or kpa. Go for the avcr. Or if you can save up a little more, go with the hks or blitz(Top Controllers)

-Bluefire


does it really matte,r I mean what is a boost gauge for anyways?

gawdzilla
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IMHO, don't really see the point of ebcs. why not just run a mbc, and if you want the high/low drop a bleeder T into the cabin.

Bioxide02
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Have to have the bling factor!

onefastrb26
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gawdzilla wrote:IMHO, don't really see the point of ebcs. why not just run a mbc, and if you want the high/low drop a bleeder T into the cabin.
EBCs will hold the boost, versus most mbcs will let it spike and fall off. If you want to use a bleeder valve on a R32 RB26DETT,a nd want 17psi, you will either spike to 17 and fall to 12-13 psi ( which will not give you the power that you expect), or you will spike to 20-21psi and fall to 17psi. We all know what will happen if you spike to 20-21psi on the ceramic turbines ( new turbos and/or engine).

Here is a list of the good easy to use ebcs- profec B black or blue ( used)- HKS EVC EZ ( discontinued, so look for it used)- HKS EVC EZII


gawdzilla
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onefastrb26 wrote:
EBCs will hold the boost, versus most mbcs will let it spike and fall off. If you want to use a bleeder valve on a R32 RB26DETT,a nd want 17psi, you will either spike to 17 and fall to 12-13 psi ( which will not give you the power that you expect), or you will spike to 20-21psi and fall to 17psi. We all know what will happen if you spike to 20-21psi on the ceramic turbines ( new turbos and/or engine).

Here is a list of the good easy to use ebcs- profec B black or blue ( used)- HKS EVC EZ ( discontinued, so look for it used)- HKS EVC EZII
thats pretty much what ebc vendors want you to believe. in terms of functionality, there is no disadvantage to running an mbc (assuming you choose a decent one, like ball and spring type, and not just a bleeder/restrictor). i agree an ebc is nice to have, you can dial it in the cabin and have multiple "settings" w/ a cool display. other than that, they offer no functional advantage like spike prevention and holding boost. i know plenty of turbo car owners with mbcs running fine, and plan to do the same myself..

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blues14
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here's my thing,,,,,i ordered a mbc ball and spring type. i took it apart and everything looked good. it sat on my toolbox in my dry garage for about a month and a half, when i finally decided to install it. i took it apart again and the ball was rusting!! Needless to say, i did not install it. thats when i decided i would look into an ebc.


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