Hi guys,

I have a 2007 Honda Accord 4 cylinder and I've been thinking of adding some modification. Any tips on were to start? I'm talking about engine mods by the way.

 

A cold air or short ram intake is the easiest place to start. A header is also a good bolt-on, and with a header and CAI/SRI you'll want to upgrade your exhaust, 2.25-2.5" mandrel bent piping and a decent muffler.

If you have a manual transmission, you can get adjustable cams, a lightweight flywheel and upgrade your clutch and get a tune. These things will all make it a little less daily driveable, but you'll get used to them in time.

If you have an auto, the next best thing after some basic engine mods would be to get a tune and then upgrade your suspension and tires. There's not a ton you can do for an automatic.

 

Thanks for the advice and yeah I drive an auto.

Are there any good online mod shops you know of btw?

 

Welcome to the HAF...New Member

 

Well, I can't advertise here, but AEM and K&N both make great cold air intakes, and you can look through the sponsors to see if you like any of them. You could also PM me if you find an online place that you're iffy about and I can help you out. eBay is a good place to start, but my rule on eBay is don't buy from Hong Kong. You really never know what you're getting and usually it's pretty low quality.

 

Just don't complain about lower MPG after installing the cold air intake.

 

Or a gain. Or if it stays even. Which is where most people sit once they stop flooring it to hear the sound of the intake. I'm sitting pretty at 23-25mpg city a few months after I installed mine.

 

I don't think there will be much a problem. I drive pretty aggressively anyways. I usually average 20mpg. CAI or not I don't really "cruise" with my car too often so I might as well be having fun with it if I'm going to be paying all that extra for gas.

 

I would think the car's ECU (Engine Control Unit) would cause a lowering of mpg with a CAI.

The ECU purpose, according to Wikipedia, is to determine the amount of fuel, ignition timing and other parameters an engine needs to keep running. It does this by reading values from multidimensional performance maps (so called LUT's), using input values (e.g. engine speed) calculated from signals coming from sensor devices monitoring the engine. Before ECU's, air/fuel mixture, ignition timing, and idle speed were directly controlled by mechanical and pneumatic sensors and actuators."

A introductin of colder air would seem to make the ECU add more fuel to the air/fuel mixture to compensate for the denser, colder air.

 

Welcome