Dothrottle body spacers work
Senior User
Joined: Oct 2003
Posts: 117
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From: Cincinnati
I never said that NO backpressure is desirable. Like I said in my post, with true duals you will lose a little backpressure (you don't lose A LOT of back pressure with just true duals). Loss in backpressure results in a loss of torque. You don't really "lose" the torque, you just move it up higher in the RPM band, and when you're up around 4-5k rpms you gain a few horsepower. Every dyno of 3.8 Mustangs I've seen with just true duals show a consistent gain in RWHP. Granted, on a nearly stock car the gain isn't very much. I think you guys are over estimating your loss in backpressure with just a cat-back true dual exhaust.
Jimmy is correct, without any kind of exhaust system your valves will burn up...it'll sound mean as heck at idle before that happens though
Jimmy is correct, without any kind of exhaust system your valves will burn up...it'll sound mean as heck at idle before that happens though
Freshman User
Joined: Sep 2003
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Hey 4.2flyby I have recently installed a airaide intake(on a 2002 ford 4.2l f150), which I felt a little more hp and torque. A few days later I installed a Helix throttle body spacer, and w/the intake and the throttle body spacer I definately felt more power. This is just my opinion, but it was well worth the money, it cost about 100 dollars at O'reily's.
thanks,
Brad
thanks,
Brad
Postmaster
Joined: Jun 2003
Posts: 3,310
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From: Lufkin
Originally posted by charles6
Hey 4.2flyby I have recently installed a airaide intake(on a 2002 ford 4.2l f150), which I felt a little more hp and torque. A few days later I installed a Helix throttle body spacer, and w/the intake and the throttle body spacer I definately felt more power. This is just my opinion, but it was well worth the money, it cost about 100 dollars at O'reily's.
thanks,
Brad
Hey 4.2flyby I have recently installed a airaide intake(on a 2002 ford 4.2l f150), which I felt a little more hp and torque. A few days later I installed a Helix throttle body spacer, and w/the intake and the throttle body spacer I definately felt more power. This is just my opinion, but it was well worth the money, it cost about 100 dollars at O'reily's.
thanks,
Brad
Posting Guru
Joined: Jul 2003
Posts: 1,337
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From: Scottsdale Az is home, St
are you going for fuel economy or power? I can tell you this much.
I have a set of JBA headers, volant air intake, TB Spacer, JET chip, and gibson SIDO exhaust.
Before and after the install of the headers, I got 19-21 MPG on the highway. I dont know of anyone hittign those kind of numbers, personally. I think a couple of guys here do, but I dont actually KNOW them.
If you want power, and to smoke those tires like WHOA, then save all your cash, and get a supercharger, exhaust, diablo chip, and headers.
Save up 4500 or so and you will be golden IMHO, of course.
Garrett
I have a set of JBA headers, volant air intake, TB Spacer, JET chip, and gibson SIDO exhaust.
Before and after the install of the headers, I got 19-21 MPG on the highway. I dont know of anyone hittign those kind of numbers, personally. I think a couple of guys here do, but I dont actually KNOW them.
If you want power, and to smoke those tires like WHOA, then save all your cash, and get a supercharger, exhaust, diablo chip, and headers.
Save up 4500 or so and you will be golden
IMHO, of course.Garrett
Freshman User
Joined: Sep 2003
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I'm not too sure what type of mpg I get, I'll check it for you. Then again I also have a Ford Module and Dual side catback exhaust. So it will probably be different. Anyways I'll quit wasting your time.
thanks,
Brad
thanks,
Brad
Postmaster
Joined: Jun 2003
Posts: 3,310
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From: Lufkin
Originally posted by 4.2flybyu
How do you guys feel about the intake I have a KN filter now is it worth it to upgrade to the intake? How many mpg do you think i could increase.
thanks
How do you guys feel about the intake I have a KN filter now is it worth it to upgrade to the intake? How many mpg do you think i could increase.
thanks
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Brett Foote
Posting Guru
Joined: Jul 2003
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From: Scottsdale Az is home, St
I personally would just get the intake....some people swear by the tornado, some people call it bogus. You need to dyno your truck to see if it really works. The "by-the-seat-of-your-pants" meter isnt always accurate. Also, I have yet to hear anyone say that an aftermarket intake DIDNT give them any gains.
Garrett
Garrett
Postmaster
Joined: Jun 2003
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From: Lufkin
Well, whether the spacer works or not, and intake will definately create more power and breath better, cooler air into the engine.
4.2flybyu:
I called 1-770-806-1955 (Motorhaven's phone number) and ordered it like that. The number is toll free. Here are 2 links to the Intake I have installed:
www.motorhaven.com
www.macperformance.com
MAC also makes a pretty cheap set of headers for our trucks, but that's another thread.
4.2flybyu:
I called 1-770-806-1955 (Motorhaven's phone number) and ordered it like that. The number is toll free. Here are 2 links to the Intake I have installed:
www.motorhaven.com
www.macperformance.com
MAC also makes a pretty cheap set of headers for our trucks, but that's another thread.