[s-cars] mileage with MTM1+

[chris chambers]

Konstantine,

Because you haven't mentioned any check engine lights I recommend starting with 
basic maintenance first to give you a known good baseline.
But if the light is on check the codes.

1. What is the age and type of spark plugs? If unknown replace
2. Check sparkplug connectors, I think they are $8-10 each if unknown age or in 
doubt replace
3. Air filter - change
4. Oil/filter change
5. You can clean the maf sensor - maf cleaner is available
6. The O2 sensor would be suspect but it's only one year one so I 
wouldn't replace it just yet; what O2 sensor did you use?
7. Exhaust - In a previous post you mentioned that your exhaust is in bad shape, 
is it possible your catalyctic converter(s) is partially plugged 

or has broken down and has partially plugged your exhaust?


HTH
Chris


 



________________________________
From: Konstantine Bogach <kbogach at comcast.net>
To: s-car-list <s-car-list at audifans.com>
Sent: Tue, August 31, 2010 12:36:20 PM
Subject: Re: [s-cars] mileage with MTM1+

Based on responses (thank you!)  I think I have a problem somewhere.  
18-20 mi/gal on average on RS2 convert is much better then me having  
max. 18.5 with only MTM 1+ chip at mixed driving (I even would not  
call it "city" around Princeton, NJ).  Cruising on highway at ~78 mph  
does not make it better than 21-22 mi/gal.
What should I check?  Ok, I will go over O2 testing again (1 year old  
one).  What else?  Can MAF be failing gradually?
Thanks.
Konstantine

Sent from my iPhone
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