Continuing the story.... I came from a e90 328i as well and got a base IS350. To be honest, I don't regret it at all. The engine is good and reliable, no exorbitant maintenance or repairs required (touch wood). Has good power, good transmission and drives well. Except for the front tires lasting 10-15K miles, I am hopeful that this car will last a long time. I know people rave about Fsport package. Even without that, you aren't missing a whole lot. Just some wheels and cosmetics.

So go have fun and drive it like you stole it .

 

The F Sport in the 350 gives you AVS which is sportier than the base 350 suspension. The 350 is the only version that gets it though. Completely worth it

 

Not disagreeing.
but being that the post starts "regrets but..."
You can also install RSR down springs or better coilover suspension and your sportier than FS or non FS.

To the op, spoiler and splitter are a great idea. Your IS will look better than 99% of the ones you see on the road.

Make it your own. A few other mods for little money are caliper paint/decals, interior vinyl wrap, recolor emblems, and fog upgrades.

 

Every car I owned gets a personal treatment, I always have to make it mine, those you mention are some of the things I'm starting with.

 

A supercharger and a reflash will get u up to speed.. go to the performance section of the forum.

 

Good to know! Thanks.

 

If you're referring to the RR Racing Supercharger kit and flash, it's only for the 350...and I think 300, but not 250.

 

Thanks for the info! when I was at a BMW forum that shall remain nameless I didn't get so much info and help being new to the forum, the contrary, I received rudeness!
Thank you guys for your help and knowledge!