I told you and Wrongday that I would get back to you on the TB spacer results. If you can recall I did the port/polishing and half-shafting of the TB, and that's where the subject of the TB spacer poped up. Most believe it is a useless mod, but like I said I would stay bias then give you guys the results after testing it. Here are the results: After already having it for over a year I wouldn't know what to expect when having it out after the port/polishing mod of the TB. First was to test the new port/polishing mod with the spacer in. I drove around for about a month or two, and had about the same amount of performance prior to the port/polishing. Maybe a little gain at top-end but nothing too noticeable. I took the truck for a couple runs to try and get a average 0-60 time. I had a few runs in the low 9's, and a best of about a 9 flat. Next it was time to take the spacer out. After taking it out I noticed that performance seemed about the same as before. I did notice the difference in the mid-range when cruising at around 45-55. It seemed to me that I may have lost a small amount of power in the mid-range. Of course I could be wrong, but it seemed to me that before I could keep my speed right up at around 50 w/out having to use much gas. With the spacer out it seems that I have to give it a little more gas to maintain that crusing speed. Next it was time to try and get a couple of 0-60 times to see if there was any difference. Again I had a few runs in the mid 9's, but I couldn't (at least not yet) match that best of 9 sec. flat. I figure that the spacer has nothing to do with it, and it's all in the launch, but I still have yet to mach that 9 sec. flat time. I still have the spacer out at the moment, and will try a couple more runs and let you guys know. I really doubt the spacer is doing much of anything, whether it be hurting or helping. But I have to admit I miss the whistle. I don't know why, but it seemed to give my truck character. But hey in the meantime (why the spacer is out), I don't have any of my papers flying away.
So overall, I wouldn't say that the spacer is totally useless. It is a cheap and easy mod to install. If you like the whistle it is defiantly worth it. It may add a small amount of power in the mid-range (most of it being torque). It does make a great paper weight. It may, or may not improve mileage. But most of all, to the ones looking to buy one: Don't expect any large performance gains from them. Good Luck with your trucks!

 

Well, Keep us posted on the difference.

I really want to get one dyno'ed myself.

btw, peak torque is midrange at 3,300rpm so i suppose it makes the difference at peak torque levels.

 

GREAT post!!!

This is good info.

Thanks for taking the time to do the comparison and getting back with the results. . .It's this kind of thing that really helps people sift through the advertising hype and see a real-world experience with and without the mod.

We all gain from this kind of info. . .reminds me of how the 86-93 Mustang guys used to be.

Thanks again, Falcon11!!!