2013 Audi S4 (B8.5) Tuning Progress Blog - MyS4.org

June 2008 - APR Bi-Pipe, Spark Plugs, RS4 Clutch

6/1/2008

UPS stopped by today and dropped off several sweet things from ECS Tuning:

Installed the APR Bi-Pipe Kit. Pretty easy installed but just take a lot of time to get everything moved out of the way and old parts taken off. After taking the car for the test drive it sure seems like I must have had a leak in the old throttle body boot. Turbos seem to spool up fast and my RPM's do not dip at 3500 down to 3000 when at WOT (wide open throttle). I always thought the RPM dip was because of a slipping clutch but that might not be the case any more. So the RS4 Clutch install might be put off for a month or two.

Just installed 6 new Denso Iridium Spark Plugs. The install was not to bad. Took me a little while to figure how to get the the left and right coilpack closest to the front of the car off. Finally figured out with the help of my wife that a silver intake piping could be remove with a single bolt removed from either side. After that I was in and out of the garage within a hour. The old NGK plugs actually didn't look that bad, but I do have to say that it seem like my engine revs a little faster and smooth with the new plugs installed. With the bipipe, spark plugs, and air filter, my B5 Audi S4 is feeling very strong right now. We will see how the MPG has change why I take a little trip this coming forth of July weekend.

**Update** went on a 300 mile round trip averaging 28.5 miles per gallon. Not bad for a 300+ hp car.

4 Comments

Riley

1/19/2011 11:07:43 am

I just recently bought a 2001 S4, and I'm really impressed that you were able to get 28.5 Mpg. I currently average around 20 Mpg. How were you able to get that? does installing a new Ecu and Audi TT 710n Diverter Valves really increase it's Mpg as well as Horsepower by that much?

Thanks for starting this site, I'm a bit jealous of the cool toys that are going into your vehicle. I hope to get there some day.

1/19/2011 02:15:12 pm

MyS4.org link

1/25/2011 04:36:37 am

Riley, I can't really say that it is all just the ECU and Diverter Valves that would cause that good of mileage. I would say making sure all of your O2, EGT, and other sensors are working well that can influence the mileage. As well as proper tire pressure and most importantly keeping your car aligned. It might just be me, but I've notice better mileage after I've waxed my car.

Save up your money and or get a second job and it all possible. Just make sure you got a extra $1k around in case something does go wrong as a insurance policy. I've seen too many people spend money on coilovers or new rims only to have a turbo go and no money to get it fixed.

1/30/2011 08:04:27 am

Alright, thanks for the good advice, one more thing. I've been looking for an automotive repair manual, like Haynes, for sometime now. I was wondering if you use a repair manual for your car. And if so, do you know where i could find one?

June 2008 - APR Bi-Pipe, Spark Plugs, RS4 Clutch

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