Will adding expensice msd spark plug wires help my fuel economy on my old 91 acclaim?

Question

trying to bring up my mpg

Answer 1

no those won't help your car at all on gas mileage.

Answer 2

No. The best way to improve fuel economy is to improve your driving habbits. Keep your speed below 60 mph. Don't tailgate. upshift early. Refuel early in the morning when it's cool out.

Answer 3

  no

Answer 4

If your current wires are arcing or are broken and not allowing spark, any good quality wire will work.  There is no need for spending for extra expensive wiring unless you are running high compression at above normal rpm such as in a racing engine.  The OEM compatible will be fine for daily use for several thousand miles.

Answer 5

Not really but it may help the car run better when wet damp or hot or cold out bec mostly those type of wires are good for spark isolation.

You might try to just give the car a true overhaul and that will take a few hrs but really help the over all car run better and that saves gas too.I'd change things like the PCV valve , check air filter , change gas filter once a yr , keep the proper air pressure in your tires , try to use tires with the same thread type and size and make on all 4 wheels, do alignements once a yr,also change the fuel pressure regulator or gas regulating device.

That aged vehicle probably needs the electrical charging system's circuit over hauled and that could be part of the problem you're having now.You'll need to check, for corrusion or rust and maybe clean the system with a small file, fine sandpaper , small wire brushes the battery, starter, alternator posts, connections and connectors, plus the engine block ground, clean or replace any and all ground wires,plus use new screws etc in connecting the grounds ,and create new ground wires or ground connections when their too rusty etc to remove.If you want to spend the time it's well worth it to take out the relays , and fuses with the battery disconnected and clean their connectors, especially any fuses etc located under the hood. Plus clean , re-gap or change the spark plugs , clean the connectors  inside the spark plug wires with a flat head small screwdriver, just be careful not to scrape the wire itself inside the connectors and be sure to clean the ignition coil connectors too.Plus I highly recommend changing the gas filter especially if you've not been changing it on a yrly basis.

Don't even worry about any old grounds if you made up new ones as long as their not in the way and you've it done right.

I'm sure if you do even the basic stuff I've listed here that you'll notice improvements.

Hope that helps and best of luck.By the way it might not be a bad idea to pick up a service manual  for that vehicle. I'd highly suspect the problem is related to bad or corroded or rusty connections especially if the parts you've been replacing are battery's , starters and alternators etc.

  

Answer 6

No.

Instead get some cheap exhaust header pipes.  then if you still have some money left over get cheap short intake pipes.  Those actually help with power AND MPG.

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I have both on my 94 civic and there's noticeable increase in HP and MPG (41 MPG on HWY).

Good Luck...