MINE'S ECU - Am I running 1bar ? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Lono9885 · 20th August 2006, 08:15 PM

So I have filters, downpipes, decat and GT spec exhaust and a Mines ECU I put in. I've definately noticed a difference in response after fitting the decat.

Last week I attempted the install of the boost controller. I've got as far as getting it all wired up with the control in the engine bay and the headunit on the dash. I've plumbed in the boost sensor to the standard boost gauge vacuum host and on taking my car for a drive the HKS head unit was reading boost OVER a bar! I think it was very erratic and under hard acceleration was reaching 1.06 from memory.

How can this be ?! Can it be that the Mines ECU is making this happen. From reading searched threads it appears the Mines ECU is only supposed to provide the right fuelling for such levels rather than actually raise it itself. I think I'mn gonna get am aftermarket manual gauge installed but wondered if anyone knows.

Cheers
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R33_GTS-t · 20th August 2006, 08:27 PM

Quote:

Originally Posted by Lono9885

So I have filters, downpipes, decat and GT spec exhaust and a Mines ECU I put in. I've definately noticed a difference in response after fitting the decat.

Last week I attempted the install of the boost controller. I've got as far as getting it all wired up with the control in the engine bay and the headunit on the dash. I've plumbed in the boost sensor to the standard boost gauge vacuum host and on taking my car for a drive the HKS head unit was reading boost OVER a bar! I think it was very erratic and under hard acceleration was reaching 1.06 from memory.

How can this be ?! Can it be that the Mines ECU is making this happen. From reading searched threads it appears the Mines ECU is only supposed to provide the right fuelling for such levels rather than actually raise it itself. I think I'mn gonna get am aftermarket manual gauge installed but wondered if anyone knows.

Cheers
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De-cats can play a big part in messing around with boost levels. My car still has the standard boost control (R32), so it's supposed to run 0.75bar but it rises as you go up the rev range, eventually to 0.9bar (0.93bar in the cold). Exhaust comprises of 90mm Trust downpipes and decat 100mm Trust exhaust (no baffle).

If you have an R33, which runs 0.84bar as standard, applying similar exhaust mods may leave you at the boost level mentioned. You should be able to set the new controller to prevent this though.

What does the stock boost gauge read?

Lono9885 · 20th August 2006, 08:44 PM

It's a 32 btw. The stock boost gauge is reading full boost but that doesn't really help

I just can't fathome an increase to over a bar from just the mods I've done

Cheers

GTR Jon · 20th August 2006, 11:03 PM

Dunno if its the same but on the Pulsar a mines ecu raises the boost pressure as well as removes the 112mph restriction and increases the rev limit. Im guessing it'll probably be the same on the skyline.
Also with regards to the 0.75 stock boost level on an R32 GTR, when my boost controller is turned off it only boosts to 0.5? Is this not normal? (sorry for the semi thread hijack)

20th August 2006, 08:15 PM	#1 (permalink)
Lono9885 GTR Register Member Join Date: Apr 2005 Location: Bromley Posts: 573	MINE'S ECU - Am I running 1bar ? So I have filters, downpipes, decat and GT spec exhaust and a Mines ECU I put in. I've definately noticed a difference in response after fitting the decat. Last week I attempted the install of the boost controller. I've got as far as getting it all wired up with the control in the engine bay and the headunit on the dash. I've plumbed in the boost sensor to the standard boost gauge vacuum host and on taking my car for a drive the HKS head unit was reading boost OVER a bar! I think it was very erratic and under hard acceleration was reaching 1.06 from memory. How can this be ?! Can it be that the Mines ECU is making this happen. From reading searched threads it appears the Mines ECU is only supposed to provide the right fuelling for such levels rather than actually raise it itself. I think I'mn gonna get am aftermarket manual gauge installed but wondered if anyone knows. Cheers Ad

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20th August 2006, 08:44 PM	#3 (permalink)
Lono9885 GTR Register Member Join Date: Apr 2005 Location: Bromley Posts: 573	It's a 32 btw. The stock boost gauge is reading full boost but that doesn't really help I just can't fathome an increase to over a bar from just the mods I've done Cheers

20th August 2006, 11:03 PM	#4 (permalink)
GTR Jon GTR Register Member Join Date: Mar 2006 Location: Tyne and Wear Posts: 324	Dunno if its the same but on the Pulsar a mines ecu raises the boost pressure as well as removes the 112mph restriction and increases the rev limit. Im guessing it'll probably be the same on the skyline. Also with regards to the 0.75 stock boost level on an R32 GTR, when my boost controller is turned off it only boosts to 0.5? Is this not normal? (sorry for the semi thread hijack)