1. I take it I have a N54 engine. is the N55 the new single turbo engine?
You do have the N54 twin turbo engine. The N55 is the single turbo engine found in the 2011+ 135i,335i,z4, etc models.
2. As it is a 2006 it's obviously a Pre LCI car? What are the main differences?
Yes you do have the pre lci model car. Aside from the difference in the engine the main difference is going to be the front fascia of the car and the rear tail lights.
Cosmetic info.
3. I want to upgrade the yellow angels. Do not want to use Bulbs... LED obviously better. BUT do not want to spend a fortune, but don't want to skimp out either. What is a decent reliable kit to order within the UK or is it worthwhile getting it from the states?
If you're looking to upgrade your angel eyes, I would recommend that you check out the LED Angel Eyes by City Vision Lighting. Here are a few pictures installed on my customers cars for you to check out.
[IMG]http://www.**********s.com/images/Products/City%20Vision%20Lighting/City-Vision-LED-Angel-Eye-Upgrade-E90-2.jpg[/IMG]
[IMG]http://www.**********s.com/images/Products/City%20Vision%20Lighting/City-Vision-LED-Angel-Eye-Upgrade-E90.jpg[/IMG]
[IMG]http://www.**********s.com/images/Products/City%20Vision%20Lighting/City-Vision-Angel-Eyes-BMW-E90-1.jpg[/IMG]
4. Black Kidney grills... I know they are all over the place, but I'm sure some have better fitment than others? If so, where are the best fitting ones at a decent price?
Yes, there are many different companies that make/sell the matte black kidney grills and not all of them are equal in terms of quality. Our Matte Black kidney grills are made of 100% new plastic and not no material used is recycled. This is important as using non-recycled materials means that you're going to have a stronger product (esp. the tabs) overall.
[IMG]https://st15.flashecom.com/**********/images/Products/blackoutinstalled2.jpg[/IMG]
Tuning info
5. Obviously JB4 is the way to go right? Seems to be the smoothest, reliable tune whilst unleashing crazy power. Where do I find this in the Uk?
The JB4 is definitely a great tune that will increase both horsepower and torque on your car. We do have this available for you as well.
6. Is it worth upgrading the exhaust and induction before the tune? Or can JB4 learn? Im under the impression the tune is just plug and play and doesn't have to be individually mapped for each car?
You do not need to purchase additional modifications to enjoy the tune. However, adding bolt on mods such as an intake, exhaust, and downpipes will allow for you to use different maps that are available with the JB4.
7. Is an intercooler and oil cooler worthwhile installing?
Yes, a FMIC will definitely help as it does keep the air cool. This is one of the biggest things you can do to help improve overall performance of the vehicle.
Electronics and interior lighting.
8. IDrive... I can only seem to get the parktronic video on when I select reverse. Is there a way of turning this on when you need it whilst driving without selecting reverse? Even driving with it at all times?
Not too sure on this as this is not an OEM function. You may be able to get something like that coded into the car.
9. Reverse camera and front... I heard there is a way of making this work and having it running all the time along side the split sat nav screen..How is this done?.
Again, see above
10. Interior LED lighting... I obviously hate the yellow interior lights, but are the white LED lights too bright? What are decent kits that replace all the stock yellow lights?
We do not carry LED lighting kits and that is not something I'd be able to help you out with.