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1990 BMW 735iL Questions and Upgrades?
mind, there are several questions I have about my
BMW. I have a 1990 BMW 735iL that has a 3.5
litre inline 6 and a standard automatic. I only
have 1 key for this car, and I'd like to get a
spare key and a "Valet Key." I'm not sure, but I
think this has a transponder chip in the key. Do
I have to call a BMW dealership and special order
for these keys, or could I get these from a
locksmith specially dealing in transponder keys?
Would the ignition still work if you have a key
that fits the lock, but has no transponder chip?
Also, I'm not sure whether or not this particular
year of this car has an alarm on it. Is the
alarm remote inside the handle of the key or do I
have to order that from BMW as well? As for the
unlock codes for the BMW 7 series radio, does
anyone know the factory issue codes? A guy who
used to work for BMW says the codes are simple:
1414, 4747, 3636, etc.
Also, what is the approximate value of a car like
this in very good condtion with a few dents,
clean engine bay and well maintained vehicle with
only 105,000 miles?
As for the mods, I was thinking of either
modifing or having a special made engine (M Sport
intake and 4 valve/cyl. design and twin turbo or
supercharged) with BMW parts and a stick shift.
Is it possible for me to either mod the inline 6
with parts from a M5 or should I upgrade to an 8
cylinder? If so, would it be cost efficient for
me to have a special made M Sport 8 cylinder or
should I just buy an engine from a '95 540i or M5
or an 8 cylinder from a 740i? Is there any turbo
headers or supercharger manifolds available for
this car or will that have to custom made? What
type of turbochargers or supercharger can I use
that is adjustable but provides top-end
When mating the engine to the car, what types of
chips and/or modules will I need to install or
remove from the vehicle? The rev limiter and
engine governor is the only 2 I can think of for
now. If I remove these modules from the harness,
will the car still run without these limiters, or
will I need limiters from a M Sport Edition/
manual transmission BMW? What about Dinan
Performance Parts- - Do they have anything in
performance upgrades for a 7 Series? How do I
As I said before, I want to drop the automatic
and go for the stick shift. How do I go about
adding a clutch and gear shifter? I wanna
install a getrag 5 speed manual from a BMW 5
series, but I heard that these may have syncro
problems. Is there any way to counteract this?
Would the trans. from a 540i manual work best, or
since they are rare, should I just get one from a
525i or a 535i? As with these types of mods,
what else can I add to this car to prevent
excessive wearing or destruction of these parts
during high speeds? Should I upgrade the oils
and fluids to a different viscocity?
Thank you for your input.