Intake /exhaust systems

[SMarquez]

I've used K&N on other vehicles with good results on full size vehicles.
I have a 03 S-10 with I4 eng. The intake seems pretty restrictive. Has anyone seen a change in fuel economy with a full Cold Air intake system? I'm only getting about 22 mpg combined. I thought a 4 cyl would be better on gas.
Thanks

[BlazerLT]

22mpg combined is very good for a s10.

The I4 is very underpowered for that truck and it works pretty hard keeping it going.

I wish I got 22mpg combined.

You will see a difference with performance if you let the engine breathe better but start off with a muffler first and then move to an intake.

Always exhaust before intake.

[S10ski]

just added a K-N FIPK to my 02 S-10 4.3

could not get any better than 21 mpg stock.

just finished mileage test and after first tank i'm getting 23 mpg

going for exhaust next

[BlazerLT]

You won't see any difference with an intake if you don't have a muffler to compliment it.

Whats the point of having more air coming in if you can't get rid of it.

[SMarquez]

Thats what I was after, but looking at the intake tube, it has a 180 and 90 degree bend. It seems like the exhaust couldn't be much more restrictive. So, what mufler works, I can get a good deal on Gibson cat-back, but as an old guy, I'm not looking for a lot of noise. My F250 V10 stayed pretty mellow but I know the I4 needs to be pushed a little more which will produce more noise.

[BlazerLT]

If a Gibson Catback will fit on your, that would be a quiet a better flowing alternative.

BTW, how much can you get it for?