looking for any quarter mile times for 550i. modified or stock. trying to decide on mods for mine.

 

Mid 13's good driver
High 13's punch-and-go driver.

Get a 535i if you're looking to mod.
Much more potential with the twin
turbos than NA.

 

already own the 550i and very happy with it but my previous car was an 03 m3 which was a little faster.
just looking for some more juice

 

Get a supercharger.

Otherwise be prepared to spend a few thousand for a couple of bolt-ons and you might
get a little more kick.

 

i think that if i get
dinan: intake, throttle body, exhaust, s3 software, & differential
i should be able to get in the low 13's
any opinions?

 

For the amount of money spent on Dinan, why
not just buy an aftermarket supercharger?

Probably wind up being same price and you would
make a lot more power.

 

I always wanted to add nitrous ...but not sure if anyone makes the application for 550i

 

i'm still under warranty for another year and dinan matches it.
however, when it expires i will defenitly consider a supercharger.

 

If you got the money then go for it !

Curious as to see how much more hp
those mods you listed above will make...


I really want to see what the 550 can
do when it's supercharged.

With the right pully and tune, that thing
is going to be a beast...

 

With all of those mods, maybe 30hp. Low 13s are possible with a good driver and prefect launch. Maybe.
If you have a manual transmission, the lowered ratio differential will help off the line but not 1/4 mile times.

Don't forget the 550i is 500 pounds heavier than an E46 M3 and a lot more quiet so it will never seem as quick.