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Higher revs after installing DIY boost controller?

Anquetil

By Anquetil,
in Engines & Forced Induction

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Anquetil

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I installed the Autospeed DIY boost controller last night and did some extensive testing to get it working the way I wanted.

I set it up for a max of 12 PSI, with no spiking and bringing on boost at a steady level.

I had done about 45km's with it setup like this, then all of a sudden today the car started to idle at 900rpm, which is about 300rpm more than normal.

So I plugged my old Turbosmart BC in and it still did the same thing. Reset the ECU but still nothing. Its still making boost and driving fine.

I might let it cool down before trying again, but anyone got any ideas what could be causing it to idle higher?

Thanks for any help.

Anquetil Mentor

Anquetil

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Would adjusting the idle with a srewdriver help?
I just took it for another drive, idle was back to 600, but after boosting idle rose to 900 and remained.
So is the DIY boost controller better than say a Cheap $100

1 stage boost controller ?

Besides the DIY, i've only ever used the turbosmart dual stage boost controller, the turbosmart spikes if punched hard.

However the DIY builds at a steady rate once adjusted and seems to hold better, and has yet to spike.

Anquetil Mentor

Anquetil

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Shane just read the autospeed article, besides the idle prob, did you find the install beneficial? did you source the parts form the supplyer mentioned on the autospeed site?

Yeah its a good setup little setup, however I dont think my issues above are related to the the DIY BC.

It holds boost well and has not spiked at all, unlike my old Turbosmart one which spiked like a mother (but it was pretty old).

Cost <$110 all up for the parts, which were sourced through Norgren in Brisbane.

Zahos Mentor

Zahos

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I have been using the same boost controler for almost 2 years now, and i must say it's great. I also have put in the check valve from the DIY boost controller part 2, and I think it is an essential to help remove all air going to the wastegate actuator on gear changes...

I was also thinking of upgrading to the better pressure regulating valve as the norgren valve is not so good in terms of fine adjustment...

My hoses are much longer than yours, as I have my valves mounted in the engine bay next to the air box, and I have never had any issues with spiking either.

This setup is much better than any bleed valve, or any other pheumatic valve setup i have used before, and is more cost effective than an EBC.

Zahos Mentor

Zahos

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Details ?

http://www.autospeed.com.au/cms/A_0685/article.html

In this part 2 of the original, they use a better pressure regulator, and also install a check valve so your BOV can do it's job...

I have the check valve, but not the upgraded regulator.

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