Show us your curves

[Ozynigma]

I am wondering what boost people are achieving with their Corksport turbos and how quickly they are spooling up. I particularly want to know what people are achieving with stock intake and exhaust manifolds.

My boost curve from last years dyno tuning is attached.

I hit 23psi at 4000rpm and maximum boost of 25psi at 6500rpm.

When this tune was done I had stock engine internals, I now have a forged build.

I have a 7gph nozzle spraying 50:50 water methanol starting from 12.5psi with maximum flow from 18psi.

I am going back on the dyno next Monday with the built motor and I am wondering how much harder we can push this puppy.

[blackms3_71]

Graph doesnt load?

[Ozynigma]

Originally Posted by blackms3_71 Graph doesnt load?

It does on a browser but not in Tapatalk. Its a pdf. I will see if I can jpeg it as well.

[Brandon@corksport]

Looks good!

[Ozynigma]

Here is my graph in jpeg

[dale_gribble]

Should you choose to, you could dial in a little more wastegate actuator preload on the wastegate flapper, and that will probably get you up to 20psi 200-300rpm faster. How much timing you running at redline with 25psi?

[Ozynigma]

Originally Posted by dale_gribble Should you choose to, you could dial in a little more wastegate actuator preload on the wastegate flapper, and that will probably get you up to 20psi 200-300rpm faster. How much timing you running at redline with 25psi?

Thanks for the input Dale, I have read a few of your threads with great interest, I am just getting my teeth into the tuning side. Previously I have just paid the tuner to get me this far.

16.5 degrees advance at redline building from about 7 degrees at 4000rpm.

The bottom line of my BCS DC Base table is;

100,100,100,100,100,70,53,48,51,53,55,56,58,58

So this means 100% WGDC to 2500rpm then drops then ramps up slightly to hold/build boost to redline.

I am thinking a bit more WGDC at 3000 and 3500rpm could help spool up faster too.

[gdawg25]

Originally Posted by dale_gribble Should you choose to, you could dial in a little more wastegate actuator preload on the wastegate flapper, and that will probably get you up to 20psi 200-300rpm faster. How much timing you running at redline with 25psi?

How do you adjust wastegate preload on the CS turbo?

[Ozynigma]

Originally Posted by gdawg25 How do you adjust wastegate preload on the CS turbo?

A barrel screw adjuster on the actuator rod

Mazdaspeed 3 and 6 Turbo Upgrade

[sheston]

I've read you can play with VVT to boost quicker as well. It would be interesting if you documented these changes so we all can learn :-)

[dale_gribble]

I've played with VVT for a while. I never saw anything out of the noise regarding spool and/or flow. When I made the preload adjustment, I saw a pretty noticeable change in low end torque and turbo response. It could be that the preload adjustment masked any VVT changes since I did the preload change first.