Joined: 22 Nov 2009 Posts: 2008 Location: BRISBANE, QLD
Posted: Wed Sep 21, 2011 8:22 am Post subject:
I've used a turbotech on my car and it was great, rock solid boost control with absolutely zero boost spiking unlike every other turbosmart controller I've ever used. They really arnt that hard to set up. Can't go wrong for the money I say.
Joined: 22 Apr 2007 Posts: 4010 Location: Perth, WA
Posted: Wed Sep 21, 2011 9:23 am Post subject:
In my experience (limited albeit) the turbotech type ones you linked are better than the turbosmart ones.
In the first, they use a ball and spring and the boost pushes onto the ball from the bottom, directly against the spring which is mounted under the screw bit. When at enough pressure, it'll push the ball back enough that it reaches the opening on the side and the boost will escape out the side. As a result, you should (at least in theory) get a good solid control with a predictable opening without any of the weird spiking issues you get on other ones.
But on the flipside, as gerado has mentioned, the screw turning for adjustment isn't very linear, as you're adjusting the preload on the spring and the springs they use in them are progressive-rate. I've never found it all that tough. Just sometimes when you want 1-2 more psi then you need to give it like a quarter of a turn then lock it back down. The only issue i've found is you need to tighten em up good or they can un-screw themselves.
The turbosmart ones I've never opened to be sure of what's inside, but I believe they use a kind of pressure-opened gate. They are much more linear like 1 turn = x psi, and you can adjust em real easy, but they tend to give unpredictable boost readings imo. But then other people think they're fine. *shrug* _________________
1994 Black JZS147 Aristo - RIP. Went swimming
New 1992 Aristo Project
they are cheap as shit so buy both.... test out and keep the one you like and sell the other one for purchase price on here/other sites.
i have a turbosmart boost t and for the price im happy with how it works. never really had any problems with spiking either.they tend to get hot real quick though so be careful _________________
Joined: 18 Jul 2011 Posts: 76 Location: South Australia
Posted: Wed Sep 21, 2011 4:54 pm Post subject:
thanks for the info guys, feel confident enough that it wont be a total fail, might grab one and repky back on here how it works out for me once i test it
i used both types of MBC, ball n spring, and, the gfb one, which is the same as the turbosmart...
i hate the turbosmart/gfb ones, can get some mass spiking, the turbotech ones i like, simply coz they increase turbo response (on a stock TT) and they are pretty good @ opening predictably ...my first one i didnt tighten the nut enough, so
I readjusted it the other day...tightened the crap out of it....wonder when it fell out...rofl
so yea...youll get big boost and youll know youve lost have of the controller..
the problem with the non ball n spring is in works in %, basically, you set it at x% which means that said x% is wat is getting bled off, because the seq is so prone to spiking that x% being bled isnt enough so spiking is taking longer to bleed off(or sustaining boost), if you can understand wat iam saying.
with the ball n spring, it still spikes, very small in my case, but the air pushes agaist the ball, opens it opens the channel, at xpsi, then opens the wastegate fast enough so the spike is taken care of quickly.
the ball n spring turbotech's can be a pain to setup, my 2nd was (stupid me) but they are great, i am using two, once for each turbo! _________________
Joined: 22 Nov 2009 Posts: 2008 Location: BRISBANE, QLD
Posted: Wed Sep 21, 2011 5:58 pm Post subject:
If you are having trouble setting up the turbotech its actually possible to set it up at the desired level using a compressor, a mate and I did it one night for his track car which he didnt want to drive up and down his street boosting (his next door neighbour is a highway patrol officer). Set it up so that the air reg on the compressor is allowing the desired psi through, then adjust the boost controller till it starts to bleed off air.
By all reports this worked perfectly, and saved alot of stuffing arround with driving then poping the bonnet to make an adjustment repeatedly till it was right.
Joined: 05 May 2011 Posts: 42 Location: Inverell NSW
Posted: Thu Sep 22, 2011 8:09 pm Post subject:
i had one of these on mine when i got it and got rid of it straight away because it was fluctuating all over the place. i replace it with a "go fast bits" boost controller and it is great, easy to adjust and reliable.
as for installation i followed:
http://www.max-boost.co.uk/max-boost/supra/boosting_the_beast.htm
and it worked awesome. its a big read but well worth it i now know how the sequential system works.
i hooked mine up in under half an hour like he says and couldnt be happier. make sure you either read the whole thing or skip to the bottom cause he mentions some dodgy ways first
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