A few addons for the disco, and thoughts

[matts98disco]

Well I did some things to the Discovery. Both to increase power and economy. I eliminated both factory mufflers, from the cat converter back with larger piping. This may be too loud for some people, but I love it. First of all, if your not ****** it its not that loud. When you stand on it, you notice a big performance increase, and it sounds insanely awesome. Gas mileage is certainally better with the lower backpressure. I also added a nice chrome euro tip and it looks AWESOME!
I then eliminated the factory air box (see my for sale ad for the used K&N filter, Cheap!) to add some sound and power. I clipped a conical filter on it, and have a heat shield comming. The sound is ****, and the power is also there. I havent done too much driving to comment on mileage. I went from Knoxville tn and back (round 130-150 miles round trip) and used about 6 or 7 gallons. My mileage is about 19-22 mpg. I am pretty happy so far. I will have to get some pics of the disco on here.

 

[joey]

Don't be surprised if after the ECU catches up you not right back to your old fuel economy
levels.

 

[matts98disco]

Eh, so far I have put quite a few miles on it, and it certainally made a difference. I noticed a healthy power increase, and the mileage increase is certainally there. Also it sounds great. I did all of it for under 125 dollars as well.

 

[joey]

Yep, I did the same thing a few years ago and drove from WV to Atlanta GA, and got 20 mpg on the highway... 2 weeks later I was right back to the 14 - 15 mpg on the highway...

 

[wolf]

Eh, so far I have put quite a few miles on it, and it certainally made a difference. I noticed a healthy power increase, and the mileage increase is certainally there. Also it sounds great. I did all of it for under 125 dollars as well.

I am not a paid representative of Joey's but, once again, I have to say he is right on the money as this is precisley what hapened to me: i.e., I put on my wonderful new ARB snorkel that just rams air down te intake throat, I opened up the whole exhaust system with a magnaflow muffler, Headman Headers included, I even nixed the cats, put in new 02 sensors just to be safe and, lo and behld, power went up and so did gas mileage - I was sooooo happy. But about a month later the party was over, that damned ECU had curtailed all my gains - I even opened up the hood to make certain someone hadn't swiped my headers in the night! It was about at that point that I wanted to pull the whole shooting-match of computerized fuel system - put on a Holly or Edlebrock manifold and slap on a nice big old 750 double-pumper carb (and of course ditch the coil-paks for a good old fashioned distributor made by Mallory). I hate that ECU.