I have been doing searches on here on performance mods and it seems that most agree that headers, intake, and pulleys are the best bang for you buck. The order of which those should be done seems to be debatable, but this is my question. What do each of these mods do for your milage? I haven't found anybody comment on that.

Thanks.

 

They actually improve your mileage quite a bit, but the ironic part is that after all the performance mods are done, half of us get more aggressive and have a bigger lead foot thus, consuming more gas then usual... after a while, you'll get back to normal again and save gas once more. lol

 

^^^^ Exactly right, but some of us don't drive normal again after doing mods

 

I still got avg. of 25 mpg with all the mods I had. This is like 70/30 freeway/local drive daily.

 

i would says the headers give the best MPG, as the intake will draw mroe air and put more fuel, and the pully duno...


really i dont know my guess is headers rofl.

 

CAI is supposed to garned a MPG gain more than headers. I have I/H/E/P/S and few other smaller mods and I drive spirited, hitting v-tec 5 times a day at least, and get 27-28MPG with mixed driving. before my mods I was around 24-25MPG, but still driving spirited. I didn't change my driving style when I got mods. The mods just made it more fun.

 

SO true! After I got my first mod (cold air intake), I instantly became a daily Hess Gas Station consumer.. blew $100 on gas in a week... then it got gradual, down to $10-20 a week.....

.... until I installed the headers. LOL

I swear, mods are like the dow jones: it has its ups and downs. haha

 

As a general rule, anything that reduces parasitic losses and drivetrain friction will increase mileage and power. I'm talking about things like synthetic oil and trans/transaxle lube, lighter wheels and tires, underdrive pulleys, electric fans (if you happen to have a mechanical one), lightweight driveshaft (if you have an exposed one), and things like lightweight flywheels (for manual cars) and even running the engine at a higher coolant temperature will all work.

For things like exhaust systems and intakes, its hit or miss depending on the original design and what the drivetrain consists of. If you have a lot of exhaust backpressure, getting headers and an exhaust system will certainly increase both power and mileage. A great example is the Banks system for motor homes - low backpressure exhaust and headers increases power by quite a bit and really boosts gas mileage.

One thing that always increases mileage is weight reduction - 100lbs won't give you much, but say if you can pull 500lbs out, you will get something like 15% better mileage (on a 3500lb car) without doing anything else. A great example of this in action is the C6 Corvette - they are only about 3,150lbs yet get high 20's in gas mileage easy - even in the automatic without the double overdrive gear.

Food for thought......

 

I thought I would revisit this old thread I started several months ago. I am thinking about getting an Icebox with a K&N filter. Anybody notice any change in MPG with this set up?

Thanks.

 

yes you will notice a slight difference.

 

If you are worried about gas I wouldnt even bother modding the car.

 

 

I have I/H/E/P/S and a few other smaller engine mods and I get 28MPG in mixed driving and 30mpg highway. when i first bought my car bone stock I got 25-26mixed 28 highway. I do hit v-tec a few times and the mileage stays consistent. CAI should help MPG and so should exhaust.

 

Where did I say I was worried about gas? I was just wondering if you can get a "free lunch" with a mod with both power and increase of MPG.

A response like that doesn't even answer the question I asked. That is my

 

^^^No need to get mad bout someone posting in your thread a related fact about bolt-on's and their benefits. Now that doesn't make sense.If you are looking for answers to your questions, this same question has been asked over 100x for sure, do a search and you will find everything you ever wanted to know about bolt-on's for a TL. Including pricing, fitments issues, overall quality, HP gains, TQ gains, MPG gains, also opinions from others members.