I am new here and I am aquiring a 1993 Bonneville SE on Friday.
I am looking for help on knowing what the best mods for power
@ or under $1000USD, short of a supercharger of turbo
Thx
For all the help in Adv.
btw does any one know the Amp rating on the stock altenator

Stock alternator on your car is 105 amps.

Techinfo is the best place to start for Performance mods.

Depending on miles, your catalytic converter may be holding you back some, consider a high-flow replacement.

After you've got a good tune-up/running in good order, air intake mods are the first mod by most people.

If you're looking for a good alternator upgrade, the 140 amp from the SSEi'* bolts right in, and will be more reliable than another 105 in there, for the output it'* relatively affordable around $130.

After a throttle body you're looking at digging into the engine P&Ping everything you can, and maybe making some ported exhaust manifolds. No one has put a cam in the L27 engine yet, or high ratio rockers.

Thx for the replies thus far more info car and intended use below.
well it has low miles for the year 77k and I plan on doing a sound system mod so I am looking for around a 200AMP alt. to support it; it will consist of a pioneer head unit with a seperate 4 channel 700 watt rms @ 4 ohm amp for the door spearkers and my 2k watt rms @ 1ohm amp for the two 15'*, btw do you have any good links for an intake, and exhuast for the '93 bonne I am having a hard timee finding these parts of which you speak.
Also my previous car was a 2002 Mustang V6.

On the alternator there are two considerations you have available.

An SSE/SSEi alternator that is 140 amp, or a Mr. Alternator model that I think he builds to your specs.

Performance wise, start with a good, well designed Cold air intake. Just throwing a intake on does not make it a cold air intake, what you will need to do is fab up a good intake to get as close to the driver'* side fender as possible, then make a good shield/box to guard the filter from sucking in warm/hot air. Next thing you may want to consider is a magnaflow high flow cat, then maybe a muffler for sound, as the stock one cannot be outflowed. Then from there on it is up to you on what you want to do.

So considering I have place to custom steel pipe bent.
I think this will do but correct me if I am wrong. An 3 inch intake with a ceramic heat shield and heat wrap on the pipe, an the filter placed in lower left front corner with a bumper air scoop should work well correct, And for the exhaust I was considering a set of custom headers and making it dual exhaust with an x-pipe system and glass pack mufflers. as far as the Alt I will try Mr. Alternator

You probably won't like the sound of the glasspacks, and I would be very careful to open the exhaust. As was already mentioned, aside from a high flow cat, the rest of the exhaust is perfect. If you open the exhaust any more, you'll lose torque, which is the power you're looking for on these cars.

Hold on there......

Read this:

http://www.bonnevilleclub.com/forum/...sulation+guide

What you propose with your intake is the worst thing you could do. And don't use steel.

From reading I gather that I should use Aluminum for the intake with Thermo Tec reflective non insulating cover also this is where I wanted to position the intake.
but let me know if this a bad place or should it be just behind the headlight.
also would using 160 degree thermostat help even more than 180 degree one