Turbotech Boost Controller V2

[jarrod b]

hey all

i noticed on eBay there's a V2 of the turbotech boost controller . has anyway used it ? can you still use it for low boost as well as high , or is it only for high boost applications

cheers jarrod

[simark87]

hey all

i noticed on eBay there's a V2 of the turbotech boost controller . has anyway used it ? can you still use it for low boost as well as high , or is it only for high boost applications

cheers jarrod

Hi Jarrod

The V2 is great for around 8psi right up as high as you want to go. As good as the Original controller is the V2 is superior. It is all in the seat design and the specically imported ball which is not metal (which can chatter and even wear away at the seat over time) but is very hard with just a tiny bit of flexion so it seats snug all of the time.

Over all the V2 is even better!

Cheers

Mark from Turbotech Performance

[GTScotT]

I need to order one of these now!

[simark87]

I need to order one of these now!

Yeah well I normally give a good discount for SAU but they are on special right now in our ebay store.. $45 delivered!!

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=220776081852&ssPageName=STRK:MESE:IT#ht_6386wt_1396

Cheers

[Missileman]

$40 from ebay , I guess SAU members receive NIL discount from Turbotech anymore

http://www.ebay.com.au/itm/220776081852?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

[Missileman]

So if I bought one of these nifty little devises for my stock R32 GTS-t how much boost should I aim for? I'm not trying to see how much I can squeeze out of the stock turbo, more trying to understand how fare I can go before the ECU maxes out the timing and mixture.

Even if I have to go for a mild over boost of 11-12psi it should still bring the boost up to pressure earlier no?

mike.

[GTSBoy]

So if I bought one of these nifty little devises for my stock R32 GTS-t how much boost should I aim for? I'm not trying to see how much I can squeeze out of the stock turbo, more trying to understand how fare I can go before the ECU maxes out the timing and mixture.

Even if I have to go for a mild over boost of 11-12psi it should still bring the boost up to pressure earlier no?

mike.

WARNING! Read the whole post before jumping to conclusions!

You can run a stockish R32 at up to about 17psi on the standard turbo without it going all emo on you (in the ECU sense). Unlike the R33s, the R32 ECU doesn't have hugely retarded timing at high loads in the stock maps. The stock mixtures are very rich up there (like 10:1) but when you push up to stupidly high boost pressures the air flow is higher than the injectors are capable of maintaining those mixtures for and the mixture ratios rise. Quite a lot. The upshot is that the car will feel (and go) pretty fast. The risk is that the mixtures can get lean enough that you'll have detonation - and now that your average R32 is at least 18 years old, the standard fuel pump will not be strong enough to keep any promises either.

The other HUGE problem is that the stock turbo is fragile. If it's been running stock boost for its whole life you may be able to turn the boost up to 14 psi and it will go forever, or you may turn it up to 12 psi and it will shit itself next week. It's random and you can't know how or when it will go.

Generally, for those that have been lucky (like me**), you can run 14 psi safely and everything is fine. No mods required. Sensible mods before turning the boost up are a bigger intercooler, bigger exhaust, cat and dump, new fuel pump. These things will help to limit the intake air temps (and hence reduce the risk of detonation), limit the exhaust back pressure (and hence reduce the risk of detonation) and keep the fuel flowing through the injectors (and so reduce the risk of detonation). If you put on a full turbo back exhaust then you'll likely get most of the 14psi for free even without a boost controller.

To answer your specific question about the boost controller itself.... A gated boost controller will definitely bring the boost on more agressively. I built one myself, and with the relief valve set as aggressive as possible (ie so that it didn't quite overshoot my target boost level) it was a little too aggressive in boost onset and I backed it off a little. Well, that was a long time ago and with tyres that aren't as good as I have now, so it is wound back up now....but you get the idea. You can achieve quite a good result from a gated controller.

**To give you an idea of how lucky I have been.....when I was first setting up the boost controller I built, many years ago, I ran it at about 17psi for a couple of days without realising what I had done. The car was blindingly fast (well, compared to what it was without the controller), but it ran without any detonation and it seemed OK. I was at quite serious risk of destroying the turbo running it that hard though, so it is NOT recommended! Spinning it that fast should have seen it fly to pieces inside the 2 days it ran like that. I must have a good one.

Edited December 22, 2011 by GTSBoy

[Missileman]

OK so the ECU will cope well, but the turbo is still a roll of the dice proposition, if its in good condition then 14psi should be achievable for every day driving.

Thanks

Mike.

[pipster11]

Find an r34 Turbo if you can, it will give a bit more flow at that PS I and should run a bit safer at 14psi

I just ordered one of these, pretty keen to see how it goes

[Missileman]

I was hoping the mailman might bring mine today, my xmas gift to myself

I'll end up doing more mods next year, though I'm probably going to upgrade the suspension first before I worry too much about turbos, IC's and exhausts, though a Nistune is one of the firt items on the list as well as a fuel pump.

[GTSBoy]

Find an r34 Turbo if you can, it will give a bit more flow at that PS I and should run a bit safer at 14psi

I just ordered one of these, pretty keen to see how it goes

A good choice of turbo as a cheap upgrade, but often you will flow enough air at 12 or 13 psi to max out the injectors with one of these. So pushing all the way to 14 psi is a bit more of a lottery. Not recommended without running it up on the dyno and seeing how much margin you have left in it.

[Missileman]

Well that was a royal pita to install. The two barbs on the controller are a little too close together, so getting on both pieces of vacuum hose with clamps is not an easy task, couple that with the awkward position of the bleed nipple on the compressor and a cramped engine bay, sure makes a simple task frustrating to say the least.

I left it wound out so it should be producing stock boost for now, I want to feel how much of an effect it has on the lower part of the rev range, and to make sure the installation is reliable before I start winding up the boost.

[GTSBoy]

Nah, just bang a trustworthy boost gauge on it and wind it up to 12 psi and go have a good thrash (I would suggest leaving the good thrash until the Christmas Eve police presence has died down a bit - say 4AM). cheers

[Missileman]

Yeah yeah...

Go hard or go home!

That's the problem I've only got an old SAAS boost gauge that I'm not too confident in, so it's little increments for the time being. it's up to about 12psi now and have noticed a slight increase in power nothing earth shattering but that's to be expected on the stock original exhaust and only a 2 psi increase.

The boost is all in 3250 rpm but seems to creep back down to 10 psi by red line? Will try one more turn tomorrow, hope to reach 700 torr

Mike.

[GTSBoy]

If the boost is falling off like that then don't bother to turn it up more. You really need at least a cat back, preferably a bigger cat, and preferably a bigger dump to keep the exhaust flowing. The stock small exhaust is choking it. With a bigger exhaust it will still drop boost at the top end, but it won't drop it down to ~10 psi, it will drop back to like 12 or so (assuming it's peaking at 14 or so). cheers

[Missileman]

Thanks for the guidance, I'll leave it at that until I upgrade to 3" turbo back system.

Mike.