SleepOnDreams

I've been looking around for an Exhaust system for my 1999 Explorer sport, and I know that the horsepower/torque gains that are shown on all of the different sites are measured in perfect conditions. So I have no way of knowing what I am actually getting on my car. If anyone has any experience with exhaust systems on the 4.0 V6 with this car, and could help me out as far as choosing which one performs the bet in everyday conditions, particularly a Gibson exhaust (thats what I'm kind of looking at now). That would be great. Because I have no access to a Dyno at this point.

Thanks

wwb

The only place you'll ever notice a difference is at the dragstrip..... unless you like running around at full throttle and near the redline, the stock exhaust system doesn't have enough back pressure to matter. Save your money.

A diesel is a different matter, since it has no throttle plate, and is moving huge amounts of air regardless of the fuel setting.

SleepOnDreams

Well thanks for the help, I'm looking for something to add to my car for gas mileage, and performance, because I don't quite enjoy the stock system, I've got a couple of basic visual upgrades, diamond projector headlight casings, along with new bulbs, and some alpine sub's, could any1 give me any similarly useful advice for air intakes, should I even bother looking at one, or which brands should I be looking at, is a cold air intake a viable option, or will I have to leave my car in the garage everytime it rains?

Non-Mechanic

I have a 95 explorer 4.0 liter, I put an intake air and flow masters on it, runs great, to see what your gain would be you would have to diano test it before and after, trust me there is a difference.