Audizine B6/B7 S4 1/4 mile times update 11/20/10

[91gl]

get those iridium plugs out of there and get either oem ngk or bosh's, your losing around 40-50 rpms/sec with those and that carbonio logs over 20 degrees higher IAT over stock airbox. put your stock box on there with a K&N and delete your cats and you should easily accomplish your goal

[CHECKERED]

get those iridium plugs out of there and get either oem ngk or bosh's, your losing around 40-50 rpms/sec with those and that carbonio logs over 20 degrees higher IAT over stock airbox. put your stock box on there with a K&N and delete your cats and you should easily accomplish your goal

the intake is complete sealed from the engine bay with dynamat and foam strips. Cats will be deleted once the new smog testing goes in effect in California (early 2013) but how could the plugs be a problem?

[Justincredible]

the intake is complete sealed from the engine bay with dynamat and foam strips. Cats will be deleted once the new smog testing goes in effect in California (early 2013) but how could the plugs be a problem?

Checkered. I got your E mail and the new list will go up in the next month or so. I try to update it every quarter.

The plugs can be a big power drain if there not 4 post. Ive seen other cars really suffer power wise if they don't have 4 post plugs..

[CHECKERED]

The plugs can be a big power drain if there not 4 post. Ive seen other cars really suffer power wise if they don't have 4 post plugs..

From a thermodynamic point of view the spark will jump to the post with the lowest resistance, in air this will be the one closes to the tip if one post is 0.0003” closer then the rest the spark will jump to that one.

In an engine environment it will jump to the post where the fuel/air mixture is thinnest, creating a small flame front point, while with a one tip spark plug it will consistently jump at the same spot creating a better flame front rather then start at the thinnest point.

Am I missing something here, do I want a small flame front rather then a consistence one in the middle of the cylinder?

[Justincredible]

From a thermodynamic point of view the spark will jump to the post with the lowest resistance, in air this will be the one closes to the tip if one post is 0.0003” closer then the rest the spark will jump to that one.

In an engine environment it will jump to the post where the fuel/air mixture is thinnest, creating a small flame front point, while with a one tip spark plug it will consistently jump at the same spot creating a better flame front rather then start at the thinnest point.

Am I missing something here, do I want a small flame front rather then a consistence one in the middle of the cylinder?

In theory that all sounds good but there is much more to it then that. While I understand the concept Im not well versed enough to explain fully and to be able to state facts. I can say that some plugs will effect the power out put of the car to a very noticeable extent

[boravr6]

13.36 @ 104.16 mph. 1.911 60 footer.

2006 S4 6MT // JHM 93 tune (94 gas) FI 2.5 catback // Miltek 2.5 catless DP's // LWCP // LW front rotors // intake spacers // baby seat

[jaybquick@JHM]

13.36 @ 104.16 mph. 1.911 60 footer.

2006 S4 6MT // JHM 93 tune (94 gas) FI 2.5 catback // Miltek 2.5 catless DP's // LWCP // LW front rotors // intake spacers // baby seat

Baby seat FTW.

Have Saki show you how to rake that sucker on the launch and you can get closer to the 12s. What RPM are you shifting at? 6500rpm has been optimal for us in ALL Motor configurations, with or without headers, even with or without the intake manifold. Without a blower it just slows down if you shift past 6500rpm. We shift our blower kit at 6800 to 6900rpm since it loves RPM.

Keep us updated with any return visits.

BTW. It was nice to meet you during my last trip to Detroit.

[cabracco85]

^^^^^^^ It must be the baby seat mod thats working all the magic. I have two in there now so it should really help the next time i hit the track.