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is stage 3- a big jump from stage 2+? i just cant get a grasp on how much of a power gain it is

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Old 11-30-2005, 05:38 PM
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is stage 3- a big jump from stage 2+? i just cant get a grasp on how much of a power gain it is
Old 11-30-2005, 05:41 PM
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Default Well, 3- is new turbos. So it won't just be a jump, but probably a change in power delivery.

Depending on what turbos you get, of course. If you got straight K04s, you're going to lose a little bit of bottom-end grunt for some more top-end.

It does depend on what turbos, though.

As for actual numbers, some Stage 2+ and Stage 3- searches for FATS/dyno charts would help get a rough idea of that.

Try checking timeslips on <a href="http://www.s4biturbo.com">http://www.s4biturbo.com</a>
Old 11-30-2005, 05:41 PM
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Default About 40 WHP ave over FATS range.

<ul><li><a href="http://pictureposter.audiworld.com/44443/112305_bej_s4_k0411x_compare_adj.jpg">GIAC 2+ and 3- HP compare</a></li></ul>
Old 11-30-2005, 05:42 PM
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Is large gain on top end, cause K03's run out of breath. See above.
Old 11-30-2005, 05:47 PM
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I felt significantly increased power across the entire rpm range, particularly at 3k+
Old 11-30-2005, 05:51 PM
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For me with APRv5 it's not a significant jump, but it pulls solidly all the way to redline
Old 11-30-2005, 06:00 PM
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Default fwiw, I just switched back to stock fueling a week ago...

to get my injectors cleaned and full 3 is MUCH faster than 3-. IMO, the guys who are planning on staying 3- are wasting a good set of K04's.

..just me tho.
Old 11-30-2005, 06:02 PM
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Are you sticking with hometune, or you getting Stage III software now?
Old 11-30-2005, 06:05 PM
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Default I wouldn't say big, but definately noticeable

First off, they really give you more pull in the high rpm range. K03's are past efficiency well before redline. When I put the ko4's in on APR software, I noticed a definate increase in performance especially up top. The car just overall ran smoother. With the GIAC software, it pulls pretty good.

I went from APR Stage 2+ to APR Stage 3- to Revo Stage 3- to GIAC Stage 3 -. Seeing you already have Garret software, I think you'll be happy.

I didn't notice an increase in turbo lag. Now with the MBC in it makes boost quite quickly. Also, keep in mind running 19-20psi spike on ko4's isn't out of their efficiency range. With a manual boost controlller and anti-throttle cut circuit you can definately make a decent jump in perfromance.
Old 11-30-2005, 06:06 PM
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Default homebrew fer life...

Honestly.. I'm addicted to the tweaking and logging. I'd be crazy bored with K04 software that had the channels turned off.


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