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Write ups and tutorials for maintenance and modifications.
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[How to] Install a turbo timer

Fri Nov 11, 2005 4:01 pm


Or go to http://www.turbocelica.nl --> Tuning --> How to.. --> How to install a turbo timer
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Last edited by Meurz on Sun Mar 22, 2009 9:13 pm, edited 2 times in total.

Wed Apr 04, 2007 4:49 am

just a quick question Rene.. or anyone that knows for that matter

do all turbo timers need a harness?
ie. the HKS one uses that tt3 one right? or can one simply splice into wires? :shrug:

Wed Apr 04, 2007 10:13 am

You can splice the wires.
But the harness makes the installation easier, cleaner and much much faster.
It well worths $15.

Thu Jul 12, 2007 1:36 pm

syko says wrote:ie. the HKS one uses that tt3 one right? or can one simply splice into wires? :shrug:

For the HKS, yes, that is correct: the TT-3


more where that came from:
http://www.mchoi.com/go/carpix/ST185/fi ... ndex4.html

Thu Jul 12, 2007 3:18 pm

Pretty much just plug and play with the harness. I have the HKS type. Just have to wire the ground and one to the hand brake.

Sat Mar 22, 2008 10:41 am

Can this also work without a harness on the ST165?

Sat Mar 22, 2008 3:22 pm

yes it can, any turbo timer can be hardwired in. But why potentially damage 20yr old wiring when you can obtain a plug-n-play harness for around $20-30 usd?

not unless the turbo timer you have doesnt offer the harness for the 4th gen celicas, then you have no other choice.

Tue Mar 25, 2008 5:16 pm

I doubt very much we'd be able to find a harness for it so there'll be a bit of wire hacking going on!

Thank you :)

HKS wire harness for st165

Fri Nov 21, 2008 7:51 pm

http://www.vividracing.com/catalog/hks- ... 30276.html

Above is a link to vividracing's website they have the HKS turbo timer harness in stock!!

Tue Mar 10, 2009 7:16 am

I just bought one of those A'PEXi pen style turbo timers with the air fuel ratio and whatever, i know u have to kinda splice wires and shit to get the air/fuel in. but can i just plug the normal part of the turbo timer straight in the back of my ECU. st185???
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