Disco Potato (GT28RS) Spool Up

[LinuxRacr]

Well, I changed the wastegate spring out, and the lowest boost I can run now is right around 12-13 PSI. I had to turn my boost control knob all the way down!! The .86 A/R makes for a laggy turbo with the manifold and downpipe I have now. This will be fixed in time. The response is a little better now, but this was not the problem. Time to upgrade to better-flowing downpipe, and manifold.

Here is a pic of the weaker 0.250 BAR (3.626 PSI) spring:

 

[LinuxRacr]

Ok, I finally found the answer to this problem. It was one or more loose t-bolt clamps. My car spools a lot better, and the low-end power is back.

 

[terbow]

seriously, i know they are "better" but i have nothing but trouble with those. unless its a dead straight piece of pipe they dont seal for s***

 

[LinuxRacr]

I've found that the seal good when they are properly tightened.

 

[Brian MP5T]

Linux... Punch The Cat or get a Pipe section made to replace the cat...

You will not believe what that will do to your performance..

Keep the Cat Pipe and swap it back for Yearly Testing.

 

[terbow]

I've found that the seal good when they are properly tightened.

i have but they are thicker clamps so if there is any curve or the silicone is loose just a little it creates a leak.

i know how to properly tighten a clamp mr.

 

[LinuxRacr]

LOL! No doubt.

 

[LinuxRacr]

So I'm guessing that everyone that spools really quick with the GT28RS has a 3 inch exahust? The reason I am asking is because I am kind of spooling the same as before WITH tubular manifold, but with 2.5 in exhaust with CAT. What will be the difference in spool if I go to 3 inch exhaust?

 

[505zoom]

lots

 

[LinuxRacr]

Can you please expand on the subject matter professor?

 

[LinuxRacr]

Linux... Punch The Cat or get a Pipe section made to replace the cat...

You will not believe what that will do to your performance..

Keep the Cat Pipe and swap it back for Yearly Testing.

I remember when I used to be CAT-LESS. That was cool on my old setup.

 

[Brian MP5T]

I remember when I used to be CAT-LESS. That was cool on my old setup.

Recently I removed the entire system from the Turbo Back and had a 2.75" DP made that goes directly down to about 6" from the road, with 1 Bend.

It has only 3 bungs for the O2 sensors.


Good savings of 65-75 Lbs off the car.

 

[LinuxRacr]

Anymore input?

 

[_Sloteg_]

I see 10psi @3000rpm's with a Stock msp manifold,2.5'' corksport DP on a GT28RS with an .86A/R....

Are you CATLESS?

 

[505zoom]

Can you please expand on the subject matter professor?

300ish would be my edumucated guess.

 

[LinuxRacr]

I see 10psi @3000rpm's with a Stock msp manifold,2.5'' corksport DP on a GT28RS with an .86A/R....

Hmmm....

 

[_Sloteg_]

Hmmm....

(dunno)

 

[Rogue]

Linux when you had the GT28R, how soon would it spool up?

 

[LinuxRacr]

Quick. I would have full boost around 3000 RPM.

 

[LinuxRacr]

I see 10psi @3000rpm's with a Stock msp manifold,2.5'' corksport DP on a GT28RS with an .86A/R....

Are you CATLESS?

No, are you?