[s-cars] I want my MPG

[Theodore Chen]

tony, is that with the same equipment before and after the chipset?  what else changed?  what turbo do you have?

i actually happen to have an MRC chipset that i bought from another lister recently, but haven't installed it yet because i still have to get the RS2 fuel injectors.  i had wanted to get the car smogged first before doing this swap.  since a leaky fuel injector is one of the possibilities, i plan to get the RS2 replica injectors and will do the upgrade then.

my car has MTM and when it was smogged two years ago, it passed easily.  from an earlier post:

> test results:
> idle (792 rpm) CO2 14.3% O2 0.70%, HC 211ppm (max 120) CO 0.11% (max 1.00)
> 2512 rpm CO2 14.4% O2 0.40% HC 68ppm (max 140) CO 0.32% (max 1.00)
>
> there aren't any numbers here for NOx.
>
> two years ago, it passed easily:
> idle (1004 rpm) CO2 14.6% O2 0.5% HC 66ppm (max 120) CO 0.00% (max 1.00)
> 2550 rpm CO2 14.9% O2 0.0% HC 3ppm (max 140) CO 0.00% (max 1.00)
>
> the turbo was changed during that time, to a GT2871 hybrid.  however, the software and injectors are the same as before, and so is the induction 
> system (still using stock airbox). i can't see that change causing the jump in HC.

-teddy


----- Original Message ----
From: Tony Curran <tony.curran at sympatico.ca>
To: Theodore Chen <tedebearp at yahoo.com>; David Forgie <forgied at shaw.ca>; s-car-list <s-car-list at audifans.com>
Cc: Mark Strangways <StrangConst at rogers.com>
Sent: Monday, June 16, 2008 2:55:56 PM
Subject: RE: [s-cars] I want my MPG

Teddy,

What you want is a MRC chip set! Here are my before being chipped numbers...

HC ppm (idle): 126
HC ppm (2500rpm): 47
CO% Idle : 0.32
CO% (2500): 0.42

After MRC...

HC ppm (idle): 26
HC ppm (2500rpm): 28
CO% Idle : 0.01
CO% (2500): 0.02

Tests at the same test centre.

Tony
96 S6

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Theodore Chen
Sent: June 16, 2008 11:10 AM
To: David Forgie; s-car-list
Cc: Mark Strangways
Subject: Re: [s-cars] I want my MPG


i got a surprising phone call last friday: my car passed smog.  the tech
wasn't around when i picked up the car, so i wasn't able to find out what he
did to get it to pass.  my car had been blowing about 125 ppm HC at 2500 rpm
(the limit is 120) and passing the other tests, so it was right on the edge.
the latest test results showed 117 ppm HC at 2500 rpm - so it just barely
passed, and that was probably within the range of normal variation.

it's clear to me that i still have to find out where the extra HC is coming
from.  i haven't gotten a chance to warm up the car and put it on VAG-COM
yet, but that's on the agenda for this week.  meanwhile, i discovered my car
has a new problem: misfiring badly at 4000+ rpm, or under high boost, and it
happens every time.  i looked at the shop report and noticed that the new
spark plugs that the shop installed were $4 each.  at that price, they're
definitely not the F5DP0R.  so i need to get new plugs.  i don't think the
old ones had that many miles on them, but fresh plugs wouldn't be a bad idea
anyway, since i had started getting occasional misfires.  i'm debating
whether to do the ignition coil conversion, too, but i guess i'll change the
plugs first and see what happens.

-teddy

----- Original Message ----
From: David Forgie <forgied at shaw.ca>
To: s-car-list <s-car-list at audifans.com>
Cc: Mark Strangways <StrangConst at rogers.com>
Sent: Thursday, June 12, 2008 8:08:01 AM
Subject: Re: [s-cars] I want my MPG

Mark:  I know you suggested the temp sensor before.  That is why I made my
earlier post, regarding the location and function of the G62 temp sensor:

http://www.audifans.com/pipermail/s-car-list/2008-June/067066.html

I think that your temp sensor suggestion was an excellent one and that Teddy
should pursue (sp?) that one over all others (at least initially).

Dave F.

----- Original Message -----
From: Mark Strangways <StrangConst at rogers.com>
Date: Thursday, June 12, 2008 7:35 am
Subject: Re: [s-cars] I want my MPG
To: David Forgie <forgied at shaw.ca>, s-car-list <s-car-list at audifans.com>

> Yeah well I also suggested the water temp sensor about 12 hours
> ago....But I did not do it with such finesse I suppose.
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