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Electronic Boost Guage Reading Wrong. Help

V-Spec

By V-Spec,
in Engines & Forced Induction

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V-Spec Rising Star

V-Spec

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Posted (edited)

Hello,

i have an r32 gtr and it came with a profec A boost controler and an SM Intergrate electronic boost guage. and they read different :S

The electronic boost guage reads higher than the digital boost readout on the profec. I had the boost set to 0.8bar on the controler for it to hit 1 bar on the guage. i wanted it on a bar but left it like that to be safe.

After getting the car on the dyno it turns out that the digital readout on the Profec is correct and when 1 bar is selected, 1.2 1.3 bar shows on the electronic boost guage. I was happy because the car was faster.

Today i checked where both units were getting the reading from, the profec was getting the reading from the top of the fuel reg and the the SM Intergrate was getting the reading from somewhere at the back of the engine bay. I changed the plumbing so they both read from the top of the fuel reg but they still dont match.

Im convinced the electronic guage is wrong. Does anyone know how to adjust the SM Intergrate unit. Cant find any english manuals or instructions on the net. I have manuals here but theyre in japanese.

Theres a unit under the bonnet that accepts the vacume line then runs to the powered unit in the cabin. Is is worth poping the top of it to see if i can adjust it.

Help anyone?

Edited by V-Spec

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