i've seen two differnt types: under intake and after throtle body. do either do anything at all? they seem pretty cheep which tells me they don't. hp = money-- big hp = bigger money.
yes they do work. you're not going to get any big power gains out of it, but it couldn't hurt. just think of it like this......for instance a c&l plenum has a built in intake spacer. c&l must have done this for a reason
btw - if you have a plenum don't use the spacer with the plenum. it will cause idle problems
I've heard that they are useless. Does anyone have a dyno showing results??
I have one sitting in my garage. If anybody has dyno results that would be great!
A guy at work has a TB spacer on his 03 Silverado, he said is made a difference, also he got like 1 or 2 miles a better on gas on a trip. I know thats no Mustang.
I have a phenolic intake spacer and I did not notice any great gains, but I did notice better throttle response, which made it worth the $25 bucks to me.