Turbo Boost query

WWooHaa12 Apr 2007, 20:11

Okay, I had a standard SX turbo, which was sent in & they put in the bigger t28 compressor wheel & the .64 exhaust housing.

When the turbo was fitted, the boost come in higher, which I understand.
what I don't understand is that if I increase the boost on the turbo, shouldn't it come in on the same rev as when it was on lower boost?

The other thing is, if you ding the actuator arm, it increases the boost, so shouldn't the boost come in earlier or stay longer compared to before?

That's it for now. Got somemore questions, but will ask later.

vveecee12 Apr 2007, 20:17

i guess it depends on what you are smoking!!!

wwidowmaker12 Apr 2007, 20:20 · edited

did someone say "TURBO BOOST"???

WWooHaa12 Apr 2007, 20:20

Apparently, not DBN Poison.

WWooHaa12 Apr 2007, 20:31

[quote="widowmaker"]did someone say "TURBO BOOST"???
quote]

Very nice WillyShaker.

vveecee12 Apr 2007, 20:33

WooHaa wrote:

WillyShaker.

hehehehe.

good one boohaa!!!

wwidowmaker12 Apr 2007, 21:09 · edited

eh eh eh - thats hehehe in reverse

wwww.MotorCade.co.za12 Apr 2007, 22:05

Some graphic pics there.

The boost will come in to paek later, it will not stay throughout at paek, but it should not go below low boost at high rpm.

If you have fitted one of these crappy aftermarket boost controllers, think of replacing it if you are in the search for boost for longer periods.

vveecee12 Apr 2007, 22:07

yeah i agree... didnt see that before!

i had that done recently, and it brings back horrible memories, so, widow, can you please remove it!!!

CChemCooladmin12 Apr 2007, 22:10

had that done recently, and it brings back horrible memories, so, widow, can you please remove it!!!

aaaghhh... ban, ban ban it. 😮 😮 😮

wwidowmaker12 Apr 2007, 22:11

www.MotorCade.co.za wrote:

Some graphic pics there.
The boost will come in to paek later, it will not stay throughout at paek, but it should not go below low boost at high rpm.

If you have fitted one of these crappy aftermarket boost controllers, think of replacing it if you are in the search for boost for longer periods.

please motordude - stick to the topic
do you generally prefer london pie or king pie?

dont go away please... just expect these kinda idiots to be up at this time of night
😕

wwww.MotorCade.co.za12 Apr 2007, 22:13

Seems its difficult to stay on topic.

Here is some random text of my site:

Boost Controllers:

GFB puts the key to boost control in YOUR hands! All turbocharged vehicles utilize some form of factory boost control, most of which display a tendency to be conservative in allowing the boost to build up, and then taper away noticeably toward redline. A GFB Boost Controller however, not only allows quick and easy boost level adjustment, but it can also reduce the boost threshold (the RPM at which boost starts to rise) and maintain a rock-steady upper limit. The simple explanation is - more power, earlier and longer! Note that this controller does not use a ball-and-spring arrangement, for a very good reason.

All new from GFB is the Reactor, a dual-stage boost controller which allows one of two independently adjustable boost levels to be selected from the driver’s seat. The Reactor comes with a complete wiring harness, along with a fuse, “Rocket Launcher” style switch and all necessary plugs to make installation a breeze. All you need to do is find a 12v power source and plug it all together – no soldering! Another unique feature of the Reactor is its air-bleed return outlet, which gives you the option to feed the bleed-off air back to the inlet to ensure the entire system stays closed to the atmosphere, in the same way that most modern factory systems do. Key features of the Reactor: Made from solid Aluminium 6061 T6 billet. Lightweight rugged construction - looks great too! Allows two levels of boost to be selected from inside the cabin. Unlike other brands on the market, both boost stage adjustments are completely independent of each other. Allows bleed-off air to be plumbed back to the inlet, just like the factory system. “Rocket Launcher” style in-cabin switch. “Plug together” wiring harness, no solder joins or additional wires needed.

And I know actually realised I only got a top mount turbo manifold for the CA18DET, will lok at getting a bottom mount aswell

vveecee12 Apr 2007, 22:19

way too much to read when they about to catch the badguys on CSI!!!

LOL - i get what you saying. i was a bit annoyed with my crappy aftermarket manual boost controller!

wwww.MotorCade.co.za12 Apr 2007, 22:22

OK, but who's got time to watch TV, if thats what you doing, you should be working on your SX.

wwidowmaker12 Apr 2007, 22:30 · edited

veecee wrote:

i had that done recently, and it brings back horrible memories, so, widow, can you please remove it!!!

uhhm, HUH? done what?

this family is even weirder than my own
🙄

vveecee12 Apr 2007, 22:32

www.MotorCade.co.za wrote:

OK, but who's got time to watch TV, if thats what you doing, you should be working on your SX.

LOL - mine works most of the time. fiddling too much is not always a good thing!

its just that when it does fuckout, it does it seriously!!!

hang on... i'd better shuddup, murphy might be hanging around!!!

VVladeadmin13 Apr 2007, 06:59

I got one of those adjustable arms on my turbo (ex-turbo) I point that the boost came on strong stayed the same just the over all peak was higher, never really noticed if this point moved, but it was around 3000rpm, before Wolf and FMIC

TThe Calibrator13 Apr 2007, 07:17

If you change to a bigger compressor wheel and exh housing it will take longer to build up to maximum boost no matter what you do with a boost controller and actuator adjustment.

Most people understand the exh housing but did you know the larger compressor wheel has more inertia so takes longer to get up to speed?

One of the reasons why doing what you did probably has the same lag as a T28 without the air pumping potential of the T28's larger compressor housing.

By the way all systems with electronic boost control (S13 and S14) build up boost as quickly as any aftermarket EBC as they bleed air out of the canister while the boost is building up.
This keeps the wastegate closed untill its set point is reached.

Did you know that plumbing your wastegate up directly to the manifold or via a fong kong boost controller opens the wastegate partially way before the setpoint is reached so delaying the onset of boost?

VVladeadmin13 Apr 2007, 07:20

Ummm learned something again... Wish we can plug your brain in and download at will 😀

wwww.MotorCade.co.za13 Apr 2007, 07:36

The Calibrator wrote:

If you change to a bigger compressor wheel and exh housing it will take longer to build up to maximum boost no matter what you do with a boost controller and actuator adjustment.

Most people understand the exh housing but did you know the larger compressor wheel has more inertia so takes longer to get up to speed?

One of the reasons why doing what you did probably has the same lag as a T28 without the air pumping potential of the T28's larger compressor housing.

By the way all systems with electronic boost control (S13 and S14) build up boost as quickly as any aftermarket EBC as they bleed air out of the canister while the boost is building up.
This keeps the wastegate closed untill its set point is reached.

Did you know that plumbing your wastegate up directly to the manifold or via a fong kong boost controller opens the wastegate partially way before the setpoint is reached so delaying the onset of boost?

Thats basically what I said, just in more ddetail 🙄 😉

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