[s-cars] Chip upgrades

[Scott Justusson]

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Taka Mizutani
Sent: Wednesday, March 18, 2009 7:23 PM
To: S-CAR-List at audifans.com
Subject: Re: [s-cars] Chip upgrades

>Thanks for chiming in, Scott- you're the man when it comes to AAN
stuff.
>I thought that the MTM chipset was optimized for US 95 octane (R+M/2).
My
>mistake.

Well, you posted that MTM chipset was for 98 RON (EURO).  That's my
understanding as well.  My point is that's 93RON (US)

>Won't you run into driveability issues if you increase injector size
w/o
>altering the fuel maps? I'd be
>concerned about idling and emissions.

As I posted earlier, the RS2 injector has a better resolution and
atomization than the AAN injector.  I haven't put those injectors in a
stock Motronic, but have several running with the Stage I> k24 equipped
AAN motors, that routinely pass emissions.

>What about swapping N75 valves from later cars? Good, bad or no change?

Got into a healthy discussion with Nate at 034 regarding the N75 valve.
Yes, swapping valves makes a difference.

>Personally, I hate the heat soak from running that much boost with a
small
>turbo- BTDT twice. The RS2 turbo
>is a nice compromise that gives you a ton more power without working
the
>turbo too hard.

Depends on what you want it to do.  I personally like the k24 for
everything it does, torque rules the planet, not much will beat that
turbo for that purpose.  The heat soak comes from running on track or
long efforts at WOT.  For street driving, the k24 is tough to beat, but
it can only put down 280 continuous hp.  The RS2 and their copies (034
2871/3071) are good turbos for those tracking their cars and/or want
more continuous horsepower.  

>Any idea what the V70R turbo specs are like? No one seems to know on
the
>Volvo side- with 2.5L I-5, the engine
>is awfully close to the Audi and the turbo response is laggier than a
K24 >on
>an AAN but pulls longer and harder
>than the K24 on the top end- 80-130 is really, really nice.

I've driven the EVOLVE chip/downpipe/exhaust version of the v70R and I
like it too.  350hp/400torque chipped with a large displacement engine
makes me think Audi should have done a 2.5L from the factory.  I don't
have any experience with the Mitsubishi turbo, but think that a big
project.  I also suspect that it's the RS2 of Volvo.  A 2871/3071 turbo
seems to have more potential for the AAN motor.

>If the V70R KKK has a similar bolt pattern or orientation, that would
be a
>nice source for a bigger blower- just recently
>out of production, much easier probably to find than an RS2 w/o going
to a
>Garrett/KKK hybrid.

The mitsus don't have a similar bolt pattern, and I wasn't under the
impression that turbo was easy to find.

HTH and my .02

Scott J