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Best Boost Controller for RB26

Rowdyr32

By Rowdyr32,
in Engines & Forced Induction

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Rowdyr32 Mentor

Rowdyr32

Posted
Posted

I'v got the autospeed boost controller with the supposed better regulator in my car at the moment and it doesn't hold boost well at all dropping about 2 psi after peaking at 14psi at 6k. It did this with the rb20 and now with the rb26.

Just wondering what boost controllers you guys use and how they make boost, drop off after peaking and spike if they do?

Any comments would be of assistance.

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Guest RedLineGTR

Guest RedLineGTR

Posted
Posted

I have heard nothing but good things about HKS Boost Controllers especially for rb26 engines with twin turbo setups etc.

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Guest RedLineGTR

Guest RedLineGTR

Posted
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The avcr compared to the hks evc controller series is not so good on the grounds that the avcr has a single stepping motor to control boost and the hks evc's form I think the 3'rd model have a dual stepping motor which have a much better boost control.

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rb25 Grand Master

rb25

Posted
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I dont have a gt-r but i can offer comment on the HKS EVC5. I rate this controller highly, it does exaclty what it should do and has bugger all spike, even in different atmospheric conditions. It's steppor motor is 3 times the size of the apexi one, and the stepper, controler and the display unit each have a 64bit processor in them, pretty tech. stuff. The worst spike i ever had was 0.05bar, with the odd spike of 0.02bar (0.3psi) here and there, i've seen avcr's spike as much as 0.2bar, which is about the same as what you're unhappy about now.

EDIT: my evc5 also holds boost plus or minus 0.02bar.

-rb25

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ferni Grand Master

ferni

Posted
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the hks evc one is good

but you really shouldn't need one for such low boost - remove the restrictor should give you ~13psi, bleed of a little air and you should get ~1bar

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meshmesh Mentor

meshmesh

Posted
Posted

Hi Rowdy,

I use the HKS EVC4 in the GTR... after going throught the headache of picking the right unit, I spoke to Ben from RacePace & the Boys at ICE Performance, and they both said they haven't seen a boost controller on a GTR that works aswell as the HKS EVC units.

Go for an EVC 3 or EVC 4, they use the same stepping motors as the new fancy EVC's from HKS and there's a business seller in the for sale section that has one of each around $300-350.

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justinfox Mentor

justinfox

Posted
Posted

I have the Apexi AVC-R. It's awesome.

Before I had it I just took out the boost solenoid and on a track day it must have spiked somewhere and I blew the pipe off the intercooler which ruined my track day.

Boost is super stable now, with no spiking on track or off the track.

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  • 4 weeks later...
600hp Proficient

600hp

Posted
Posted

i've got the Blitz i-D limited edition uras thing it looks cool and is very easy to use.

my brother has had the AVC-R and it worked a treat, as for boost dropping off it could be something to do with exhaust flow or turbo running out of puff.

my 2 cents.

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Evo_Lee Experienced

Evo_Lee

Posted
Posted
The avcr compared to the hks evc controller series is not so good on the grounds that the avcr has a single stepping motor to control boost and the hks evc's form I think the 3'rd model have a dual stepping motor which have a much better boost control.

Not true the HKS EVC has a single solenoid stepping motor.

I woudnt touch any of those 2 boost controllers. Both of them are outdone by the Greddy Profec B and Blitz SBC SPec R for ease of use and boost conotrol.

I wouldn't recommend the Profec B so highly, the Blitz DSBC yes.

Only 2 EBC I recommend is the Blitz DSBC or HKS EVC EZII. Even though the HKS has a single solenoid, what makes it control boost so well is the way the stepping motor works...like gates opening and closing.

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