GenVibe - Community for Pontiac Vibe Enthusiasts

After I got exhaust done yesterday I reset my trip meter, After I worked the last 2 day i drove about 400 miles and checked how bad of a hit I was taking from the new mod. I saw that I am getting about 3.12 more mpg then before.I was shocked, don't think opening up the exhaust would make that big of a difference. Anyone else experience this?

You'll also notice that your car has a little more power, too. But too much of feeling that will lower your gas milage. The better flowing exhaust compliments the better flowing intake. Makes your engine not have to work as hard to get the same amount of air in and out.How do ya like the new sound?

It sounds great, the sound has gotten deeper then it was first put on. The floor will vibrate after 4k, and the higher the rpm it gets alot deeper. I am going to try to get a hold of a video camera this week end to make some clips

Let us know if this keeps up, or your mileage goes back to normal. I'm interested to know.

did you do full exhaust from the header back? or just put on a borla muffler?

It's from the cat back. 2.5", took out the resonator

nice, I need to get my exhaust done too!

Been working on mine a little the other night. Found the cause of the leak from the header to downpipe flange. Idiot that welded on the flange got some spalding on the inside right where the donut gasket goes. Ended up taking off the whole half of the exhaust just to use my dremel to grind it smooth again. Put in a new gasket and some exhaust sealer just to be sure. Sounds alot better! Still have to get the Aero exhaust (Aeroexhaust.com) SUV muffler. That should make it quite again. They also have a resonated exhaust tip I wanted, but now I don't see it in 3".Countryvibe, if yourplanning on getting a highflow cat, I would put the resonator back in. It'll be really loud otherwise!

I am going to keeps the cat till it goes bad, just can't see speading the money on it right now. I plan on getting a few more little mods till next summer, hopfully I can get it boosted then

Good job on the exhaust man...not only do you have the lift..now you got the exhaust.. whew...gone.......gone.............lol......one day,maybe 1 day....i can be fast too....lol....naw but my vibe doesnt have a governor on it....an i got it past the 120 mark with her screaming her lungs out...lol (an thats jus the base..imagine yours man..

Quote, originally posted by VibeTronic »but my vibe doesnt have a governor on it....an i got it past the 120 mark with her screaming her lungs out...lol (an thats jus the base..imagine yours man..I wish. I top out at a whopping 107.

Im in the middle of putting on a JP midpipe. but Im in the Philippines until next month & cant post any results until then

I don't buy that type of gain. Monitor it for many more miles, and get back to us. Going down the highway, your engine is at maybe 25% ouput. If the stock exhaust can't keep up with that, that engine will really be choked at WOT.

I really don't drive alot on the highway just country roads. Most of my miles are in the city delivering pizza

Quote, originally posted by CountryVibe »Most of my miles are in the cityMaybe you should be "CityVibe"

it's not a big city only about 50,000

Quote, originally posted by CountryVibe »it's not a big city only about 50,000Reading that reminded me of when I met my wife, told her I come from a small town (17,000) she lauged, she comes from a town of 250. Every time we go to my home town, she mutters to herself.... small town....

lol I came down from Chicago so alot of town look small to me

Quote, originally posted by kunkstyle »I wish. I top out at a whopping 107.107?! the vibe 1zz should hit 115! its just...once you get like 105 or close to 110 its soo slow to hit the speed limiter.Hmmm I still need the exhaust..mid pipe and ported headers....oh the power.

Quote, originally posted by northvibe »107?! the vibe 1zz should hit 115! its just...once you get like 105 or close to 110 its soo slow to hit the speed limiter.Bringing up the speed wasn't the problem. The fact that the tach was redlining was