Cold air intake, headers, high flow exhaust?

Question

does an cold air intake, headers, and high flow exhaust get u better fuel milage if you can keep your foot out of it?

Answer 1

Oh yes.  

I have those and it bumps the MPG little bit more than before.

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There are few thing you can do to save (or maximize) gas MPG. First get a tune-up.

(1) spark plugs

(2) spark plug wires

(3) distributors, coil, rotors (if you have them).

(4) new air filter

(5) PCV

(6) correct tire pressure

(7) clear the trunk of useless heavy items

(8) spray clean MAF sensor.

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Forget all those "SAVE GAS" scams.  This was on NBC morning TV show.   The difference is as much as 38% (their claim).  There are very simple rules to save gas:

(1) drive slow - not too much past 55

(2) accelerate slowly

(3) don't brake unnecessarily

(4) use cruise control - whenever it is safe to do so.

Don't coast - it is NOT safe and it does NOT save gas.

The above really works. Using those simple rules I was able to drive from Boston to NYC (210.5 miles) on just 5.112 gallon (94 Civic).  That's 41 MPG (94 Civic 187K miles).  Actually I was speeding at 72 MPH so I could do even better at 55.

WOW !!

Good Luck...

Good Luck...

Answer 2

yes they do..... if your car is under warranty, the high flow exhaust is possiblly the only one you can install without voiding the warranty.....

everything from the O2 sensors forward that is altered or changed will void your warranty... (FORD)  other mfgs may differ...

for the cost do they pay for themselves... not likely....but the extra performance and cool sounds make driving lots of fun...