Higher revs after installing DIY boost controller?

[Anquetil]

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]

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[bangahh]

Would adjusting the idle with a srewdriver help?

So is the DIY boost controller better than say a Cheap $100

1 stage boost controller ?

[Anquetil]

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.

[95GTST]

Shane, I'm using the same boost controller and haven't had any problems with it yet. I did have idle problems later on and found that it was a carbon build up in the idle control valve. Had this cleaned and all good.

[Anquetil]

I went for another test drive and gave it an absolute canning, then it went back to normal and is fine now. Maybe it was a build up or something?

[Timd]

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?

[Anquetil]

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]

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.

[wreckedhead]

i thoguht that 900-1000 was normal idle, mines been doing that for almost a year now and its been fine.

[benm]

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...

Details ?

[Cubes]

How do you find this setup holds boost when trying to hold say 7psi or more over the actuators standard level? Does it still start to drop off towards redline?

[Zahos]

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.