NSX manual boost controller users

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May 26, 2014 | 06:07 AM

69-chvl

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From: THORNTON, PA (NEAR PHILLY)

NSX manual boost controller users

With either a 10 or 7 psi springs installed, and with the boost controller pretty much backed-off all the way, boost is very erratic. Sometimes 13psi, most of the time 17 psi. I have the s475 83/74 with 2 38mm gates. Going to remove the controller today and just reference the turbo and see what kind of control I get that way, but I cant imagine 2 38's are not enough gate.

So far though I just don't think this BC works very well, but what can you expect for $20.

Last edited by 69-chvl; May 26, 2014 at 11:56 AM.

May 26, 2014 | 12:41 PM

Wicked69

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I ran that one for a while and it worked fine. Maybe the openings on the hotside needs to be hogged out where it meets up to the wastegate opening.

May 26, 2014 | 01:55 PM

RonSSNova

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I'm just using 9 psi springs. Even though it seems to measure 11 psi, it's rock solid.

I have two 38mm Tials

May 26, 2014 | 02:39 PM

69-chvl

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From: THORNTON, PA (NEAR PHILLY)

I just bypassed the controller and stuck in 11.6 psi springs and sure enough it holds 11.6 psi. I think me issue is that the controller is hyper-sensitive to adjustments, maybe their all like that who knows. I will say that boost builds a touch slower w/o the controller.

May 26, 2014 | 03:37 PM

RonSSNova

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Are you measuring boost via the map sensor and data log or by a gauge?
In relying in the map, converting kpa to boost.

Ron

May 26, 2014 | 05:00 PM

69-chvl

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From: THORNTON, PA (NEAR PHILLY)

Quote:

Originally Posted by RonSSNova

Are you measuring boost via the map sensor and data log or by a gauge?
In relying in the map, converting kpa to boost.

Ron

Datalogger shows boost at 180 kpa = 11.60psi. The fuel pressure is also going to 54 from the 43psi base so the measurements are right on.

May 26, 2014 | 07:57 PM

GTO Eric

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Something is not right.

I have the same controller on my turbo GTO and I have installed one on a twin turbo supra. Both work flawlessly.

Do you have a picture or diagram of how it is hook up?