#1 complaint about running boost - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Unreal · 10-02-2014, 03:26 PM

Boost control without co2 can do the same thing.

BullF-16 · 10-02-2014, 05:54 PM

Quote:

Originally Posted by Unreal

Boost control without co2 can do the same thing.

Not in the ranges i mentioned

Twin2010 · 10-03-2014, 07:52 AM

Its a freakin blast to drive my car when its cool outside. It was 49 degrees this morning on the way to work. What a difference it makes

Unreal · 10-03-2014, 08:31 AM

Quote:

Originally Posted by BullF-16

Not in the ranges i mentioned

Yes it can. Good kit, good controller has no issues doing that. You don't need c02 on a street car.

Trackman · 10-03-2014, 10:43 AM

Quote:

Originally Posted by Unreal

Yes it can. Good kit, good controller has no issues doing that. You don't need c02 on a street car.

Which kit is this you speak of?

Unreal · 10-03-2014, 11:14 AM

Probably any of the decent twin kits. Kits like the singles just push too much air through a small housing to control boost at high levels, or even get high boost.

It all goes to back pressure opening the gate. CO2 just allows you to hold the gate shut with a lower pressure spring. If backpressure isn't an issue, then there is no need for it. You can have the same turbos, one on a .63 a/r housing and one on 1.3 a/r housings. the big housings will have no issues while the small housings may. So it depends on the turbine/housings.

BullF-16 · 10-03-2014, 11:46 AM

Quote:

Originally Posted by Unreal

Yes it can. Good kit, good controller has no issues doing that. You don't need c02 on a street car.

I know manifold pressure is good for 2-3 times spring pressure but over 4 is pushing it.

stevieturbo · 10-04-2014, 12:10 PM

Quote:

Originally Posted by BullF-16

Not in the ranges i mentioned

I've done 7.5psi to 30psi so far...

And that's only because I've 7.5 psi springs.

Cant see any reason to install softer springs, as I'd never want boost lower anyway.

No CO2 here.

stevieturbo · 10-04-2014, 12:12 PM

Quote:

Originally Posted by Unreal

Probably any of the decent twin kits. Kits like the singles just push too much air through a small housing to control boost at high levels, or even get high boost.

It all goes to back pressure opening the gate. CO2 just allows you to hold the gate shut with a lower pressure spring. If backpressure isn't an issue, then there is no need for it. You can have the same turbos, one on a .63 a/r housing and one on 1.3 a/r housings. the big housings will have no issues while the small housings may. So it depends on the turbine/housings.

Even applying boost pressure to the top chamber to blow the gate shut with spring pressure as well will allow you to reach a much higher target unless EGBP was very very high.

Unreal · 10-04-2014, 01:38 PM

It isn't about 2x, or 3x or 4x wastegate spring pressure. It is about having enough pressure to ensure the backpressure doesnt blow the gates open. So a free flowing turbine/housing maybe able to do 10x spring pressure while a crappy tubine maybe able to do less than 1x spring pressure.

stevieturbo · 10-04-2014, 04:33 PM

Even with truck based manifolds, 2" ID pre-turbine, BW 68mm turbine wheel and their 0.88 T4 housing, at 17psi boost I'm roughly 1:1 with boost.

Sensor took a dump ages ago though, only replaced it a few days back and havent tried most boost to check yet what it's like at higher levels.
I was pleased it was so low, as really didnt expect it.

BullF-16 · 10-04-2014, 08:51 PM

lol

10-02-2014, 03:26 PM	#29
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Boost control without co2 can do the same thing. __________________ Nick Corvette Z06 -1200ish rwhp

10-03-2014, 11:14 AM	#34
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Probably any of the decent twin kits. Kits like the singles just push too much air through a small housing to control boost at high levels, or even get high boost. It all goes to back pressure opening the gate. CO2 just allows you to hold the gate shut with a lower pressure spring. If backpressure isn't an issue, then there is no need for it. You can have the same turbos, one on a .63 a/r housing and one on 1.3 a/r housings. the big housings will have no issues while the small housings may. So it depends on the turbine/housings. __________________ Nick Corvette Z06 -1200ish rwhp

10-04-2014, 01:38 PM	#38
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	It isn't about 2x, or 3x or 4x wastegate spring pressure. It is about having enough pressure to ensure the backpressure doesnt blow the gates open. So a free flowing turbine/housing maybe able to do 10x spring pressure while a crappy tubine maybe able to do less than 1x spring pressure. __________________ Nick Corvette Z06 -1200ish rwhp

10-04-2014, 08:51 PM	#40
BullF-16 USAF retired! Thank God! Drives: 2011 1SS, 1LT red,1LT/RS SGM 98Z28 Join Date: Jul 2011 Location: North Texas Posts: 2,799	lol __________________ HKE LSX427(Mast blk lbl 305 6bolt LS7heads, PatG231/246 blower cam, RWHP/TQ: 1281/1133 SNL Performance Custom Twin PT6766 BB turbos 4 to 25psi selectable on the Boost Leash controller, Squash dual 400LPH/ID2000s, ALKY 4 gal meth, Autometer AFR/Bst/oilpres/oiltemp/fuelpress gauges, Pedders Justice road crs pkg: All HD bushes, supercar 12kg coil overs, supercar ZL1 sways, camber plates all setup by JusticePete! :Gforce 9" 35spline S-Trac, 1500hp Outlaw axles, 3.5"alum DS, Monster Triple disc; 4xForgeline 19x10.5 4xBridgestone 305/30R19 RE-11, CTS-v calipers/rotors/Cobalt friction XR1/3 pads

10-03-2014, 07:52 AM	#31
Twin2010 Drives: 2010 twin turbo ss Join Date: Nov 2012 Location: Oklahoma City Posts: 306	Its a freakin blast to drive my car when its cool outside. It was 49 degrees this morning on the way to work. What a difference it makes

10-04-2014, 04:33 PM	#39
stevieturbo Drives: it changes Join Date: Nov 2010 Location: Norn Iron Posts: 1,126	Even with truck based manifolds, 2" ID pre-turbine, BW 68mm turbine wheel and their 0.88 T4 housing, at 17psi boost I'm roughly 1:1 with boost. Sensor took a dump ages ago though, only replaced it a few days back and havent tried most boost to check yet what it's like at higher levels. I was pleased it was so low, as really didnt expect it.