Right,
with the impending festivities, I may actually finally have some time to start on ecomodding the 318iS..
Looking at the car, I can see 3 fairly easy mods that should provide some gain, but before I start, I'd like your guidance and advice!
1. WAI- Warm Air Intake.
The current setup in the car is a AFM (Air Flow Meter) fed from behind the LHS headlight. I'm lead to believe from my reading on here that
-the AFM will be able to respond to the lower density Air if I take a feed from the Exhaust manifold
-The warmer air will improve engine warmup and shift our of "startup mode"
is this correct?
Current Air intake setup
Proposed Route for getting to the Exhaust manifold
What the AFM setup looks like
2.Upper/Lower Grille Block
As is the case with BMW's, This car has a fairly large Upper grille, and a long, thin lower grille built into the bumper.
The Upper Grill feeds directly to the Radiator
The lower grill is just open.
I'd be looking to block the whole upper grille and the whole Lower grille (for the winter at least)
Any advice on attaching or solutions for blocking much appreciated.
The bottom grille is the Black strip running horizontally accross the bumper, below the number plate
Upper Grille
Upper Grille Top Cover
3. Front Belly Pan
As can be seen from the pictures above- the car has no front belly pan, so teh entirity of the engine bay is open to the elements at the bottom..
I have available an undertray from an e46 (the 3 series afer this) that I can chop and fit as required.
I really need some advice on fitting the pan though..
- What is the best NON INVASIVE method of attachment?
- Do I attach it so it falls off if struck (to minimise damage?)
- Any special advice regarding where the pan will meet the downpipe?
Thanks for taking the time to read this post- I hope your advice means I can get this car closer to my goal of 45 IMP MPG
