[s-cars] mileage with MTM1+

[Michael Lardizabal]

K-

One thing at a time. I've had the tune in the past and although it does get less 
mpg's than some of the other less aggressive tunes I don't recall it being that 
bad.

I would install a boost gauge first because it doesn't sound like you have one. 

The MTM1+ should hold 19-20lbs at WOT on 3rd-4th gear. If you've got issues such 
as boost leaks you're not going to see those #'s.

Easiest way is to tee off the ecu , or if you have an S6 , there's a vacuum hose 
to tee off of inside the wiper motor assy shroud in the engine bay. Its closer 
to the drivers side.

My guess is that your MAF wire has residue. I've used electrical/electronic 
cleaner for years w/ no problems. Just douse it well, but gently. Don't put the 
hardline hose to close to the wire.

HTH

Mike



________________________________
From: "kbogach at comcast.net" <kbogach at comcast.net>
To: chris chambers <fastscirocco_2000 at yahoo.com>
Cc: s-car-list <s-car-list at audifans.com>
Sent: Tue, August 31, 2010 10:19:24 PM
Subject: Re: [s-cars] mileage with MTM1+

Chris, spark plugs are right (from SJM), connectors and filters are new. I doubt 
exhaust is the problem. 

No codes from ECU. Engine works steady at idles and pulls well at boost (the 
latter is where I can be wrong). 


I don't know which injectors I have and if they need cleaning, and how to clean 
them. I also don't know fuel pressure - need to install inline gauge asap. 

Need to check if O2 sensor' heater works (not sure how it would manifest if it 
is not). I don't remember when I checked temp sensors last time. 

MAF was cleaned a year ago and it did not changed anything. Need to check for 
vacuum leaks. No obvious leaks. 




Konstantine 
Car is getting new paint tomorrow! 



----- Original Message ----- 
From: "chris chambers" <fastscirocco_2000 at yahoo.com> 
To: "Konstantine Bogach" <kbogach at comcast.net>, "s-car-list" 
<s-car-list at audifans.com> 

Sent: Tuesday, August 31, 2010 11:09:42 AM 
Subject: Re: [s-cars] mileage with MTM1+ 



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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