So, from those of you who have experienced this first hand. How bad do catalytic converters kill gas mileage?
Thanks

 

From my experience with different makes, I didn't see any increase providing cat(s) were functioning properly.

 

without my cats i had a slight increase in mpg. after all my mods my mpg has only gone up. where as stock i got like 180 mpg i now get 250~300

 

ajsuper7,
does that electric turbo really work????

 

If anything It promotes It. Not only did I notice a tad bit of Increase of Fuel Economy when I removed my Cat, I noticed a considerable loss of low end! Keep It on If you have a Hi-Flow setup.

 

the electric turbo does work from my butt dyno, i have yet to do any runs with it on/off on a dyno or with my gtech. it definitly seems to help low end over just a cone filter but until ive proven it works at wot i dont want to say its a good buy. for me im happy with it...so i spent 120 bucks...no biggie. if you got the money to spend might as well try i say.

 

what'd you guys recommend. I've heard good things about TurboFlow from bonez.

 

electric turbo

 

Oh god, lock this thread now before it gets way out of hand..

 

haha, that's kinda funny. I was thinking or building my own "electric turbo" for an old corolla i had.

 

I just installed a downpiper and bonez high flow main cat with the stock cat back. Before it was a full 2.5-3 inch exhaust. I will let you know if my mpg goes up or down and how much.

 

That'd be awesome, thanks

 

with a turbo it will help gas mileage. Yes without you are running free but you are using more boost so thats where it hits your gas mileage. Dropping the cats from a NA will help at the pumps.

 

any body have used cats for a 88 NA that are in usable shape?

 

Also, no cats on an NA promotes gas saving driving while in the city, as anythign over like 2500 rpm draws unwanted attention.

 

Also, no cats on an NA promotes gas saving driving while in the city, as anythign over like 2500 rpm draws unwanted attention.

 

Stock exhaust can't be too bad. I got 28mpg doing some city and freeway driving with my 87 base on its first tank under my care. Those skinny tires probably help a little.

 

yeah i mean i guess its gay because i found a way to increase hp on a n/a for not much money...that makes its gay. i dont think so. i never asked your opnion, i responded to someone genuinly intereseted, but for the little girls who want to poke fun for no reason i say go get some tampons for your ******* ****** and quite trying to grow ***** on an internet forum.

 

btw i have some gutted cats from an '87 n/a...but im presuming you want cats that work.

 

haha, ajsuper7, bad day huh?

 

lol...ya it was a bad day. much better now.

 

why not just buy a used electric leaf blower, and wire that up to your intake?

 

screw all of that! why dont you just get a big *** tank of compressed air and hook that biotch up and get a air compressor in the trunk and yeah woooh i got boost!!

 

hahah, "e-turbo" bahhhhhh.
Only way they are REALLY going to work is if you change your muffler bearings with those new rotary style titanium bearings.