Mitchwnz's MY11 STI - Page 25 - Perth-WRX.com

RoughStilin · #**241** 03-08-2013, 09:24 AM

Good work Mitch, should pull like a train now. 1 Bar by 3100 rpm...Noice

mitchwnz · #**242** 03-08-2013, 09:35 AM

Oh yes it does... It's insane the amount of difference the tune and exhaust has made to the car. No more doughy acceleration.. turbo comes in at the right time and holds all the way through instead of coming on in an eventually laggy curve.

scary · #**243** 03-08-2013, 10:16 AM

Quote:

Originally Posted by RoughStilin

If you look at the majority of dyno sheets that show torque & manifold pressure, the torque curve will to a certain extent mirror the changes of the MAP. As in, boost drops, torque will drop. The reason why boosts drops will be a couple of reasons, but generally poor waste gate operation / boost solenoid or control operation or simply the spring inside the waste gate is too soft for the controller to handle.

AVCS pays a large part also in boost levels & how air flows through the engine & then that flow influencing the pressure.

There's bleeding boost back in high rpm and then there is boost spike - I see spike on that graph not controlled boost.

And in theory with AVCS the Torque should hang about longer with the adjustment to the cam timing to suit the map profile - that is the point of AVCS.

Not saying it's a bad result Mitch I think it's good but maybe try a Mac valve or similar to hold the peak boost a bit longer and more controlled.

RoughStilin · #**244** 03-08-2013, 11:47 AM

All depends if the AVCS has been tuned to match the modifications?

scary · #**245** 03-08-2013, 12:10 PM

Wouldn't that be the point of a tune?

RoughStilin · #**246** 03-08-2013, 12:50 PM

I think you might be surprised how AVCS timing does not get touched on a basic tune up such as an exhaust, CAI.... what ever whatever. Not saying it hasn't been touched, but it realistically takes time to tune AVCS correctly

Dan [GTI] · #**247** 03-08-2013, 02:43 PM

New Tune, Suspension and Wheels... Looking very promising Mitch

Quote:

Originally Posted by RoughStilin

I think you might be surprised how AVCS timing does not get touched on a basic tune up such as an exhaust, CAI.... what ever whatever. Not saying it hasn't been touched, but it realistically takes time to tune AVCS correctly

With minimal mods I can't imagine there would be big gains to be made especially when you consider the time ($$$ cost) it would take to gain full advantage of the AVCS.

drewgong · #**248** 03-08-2013, 03:37 PM

is this car an sti mitch? my 06 tune chews this.. more tq, higher hp and in lower rpm too.. and backed off boost in the top end to save the 2.5 from dokking..

Dan [GTI] · #**249** 03-08-2013, 03:39 PM

Quote:

Originally Posted by drewgong

is this car an sti mitch? my 06 tune chews this.. more tq, higher hp and in lower rpm too.. and backed off boost in the top end to save the 2.5 from dokking..

Thread name and various posts all say STI

DukeDrifter · #**250** 03-08-2013, 04:19 PM

Who cares Mitch is happy that's what matters.

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The Following User Says Thank You to Dan [GTI] For This Useful Post:
drewgong (03-08-2013)