I started a new thread "Review of Motordyne Plenum Spacer" where we all
can review it. I love my 3/8" spacer Tony!

 

does anyone have this 3/8 spacer installed on a sedan are the hp gains the same looks good from reading

 

Just installed the 1/2" Motordyne spacer. Did the ECU reset, throttle position reset, and idle learning reset. Went for a drive and after a few WOT runs, the car does not feel faster. In fact, it feels slower off the line by quite a bit. Even turned off the VDC and no difference. Maybe the ECU needs some time to dial things in. I know I'm the only guy in the world who says the car seems slower, but I'll give it a week and if no improvement, off it comes. And it idles perfectly, so no vacuum leaks either.

 

Hmmm. . .
I somewhat agree with ballisticus. . .but not totally. Here's my thoughts after installing the 1/2"er and finally getting my TS ECU:

The car does NOT really pull until 2500RPMs at which point Mr. Hyde is released. At each shift point, I am not sure if it is the ECU or the spacer, or a combination of both, but after the 1st, 2nd, and 3rd gear shifts, I get thrust into my seat and am pressed back so much more than I was before. I've noticed the biggest differences on the highway. If in MM mode, in order to pass someone and accelerate, I used to have to go to third gear. Now I can leave it in 5th, or if I need to accelerate, I only need to drop into 4th. Am I happy with all of my results? Absolutely. I should probably dyno it just to confirm my feelings. Or better yet, drag the thing and get some times, although that does depend on the driver's skill of which I have none. Anyway, overall, I'm extremely satified with the results and should be content for a while until JWT is carb certified. By that point I should have enough for my complete buildup too. (I'm talking forced air, tranny, drive shaft, diff, axles, wheels, the whole works!!!) LOL

-drew-

 

I believe that the spacer is well worth the money, and is about the best bang for the buck, save for the Z tube and K&N filter.

There is more power available across the range, and pulls like H*LL. Have your dyno's or all the discussions you want, but the gains are well worth the money and time. I have yet to do the ECU reset but I'm happy now!

To all of you on this thread Thanks for the info it made the purchase alot easier and feedback really made the whole thing alot easier.

The spacer is fit is great and the kit is complete as can be. Great product and service from Tony and Motordyne.

 

It seems like a great bang for the buck mod. I installed the 3/8" spacer, and my other mods were high flow cats and Z tube. I did not do an ECU reset because I figured that the ECU would adapt with some driving time anyway. At first I only noticed a little bit more power at the top RPMs, but after 100 miles or so it felt better throughout the RPM range and maybe even a little more on top RPMs. Not sure why--it might have been the ECU adapting somewhat. Very simple and effective mod, from what I can feel.

 

I installed the 1/2" spacer on my 05'X Sedan a few weeks ago and I def. "feel" more power in the higher RPM's.

Hydrazine,

Do you have any 05' Dynos info that you could post ?

 

I don't have any 05 dynos yet. Hopefully at a dyno day some time soon!

 

UPDATE:

My impressions were not too good at first. But now after about 200-300 miles, there is definetely more pull. Actually, a lot more. The biggest gain seems to be in the torque at low RPMs. The trans will stay in a gear at 1500 RPM and just pull up the same hill by my house that it would have downshifted before.

The ECU reset seems to do just that. It resets to default factory settings (factory flow parameters). With all the mods I have with intake and dual exhaust, I probably make less power after a reset until things can readapt to the modified flow patterns.

The 1/2" spacer should make more torque because the plenum volume is increased by probably 30%, and the runner velocity should be higher due to more air volume available per square unit area. It is a good mod. I am a believer now. Just make sure to use red loctite on the 6 center bolts. Having those back out and sucking in a center spacer would be bad. My suggestion to Tony would be to use a spacer bonded to a threaded stud and feed it from the bottom side out, then use a hollow cap screw to tighten down the external end of the stud. That way if anything came loose, the worst that would happen is a vacuum leak and anything loose would be contained by the bolt hole in the upper plenum.

 

Sorry for being an newbie, but what are RED LOCTITE? are those the little adhesive pieces that hold Tony's spacers inside the Plenum? Those things come loose inside? Should I be worried or check on this piece?

 

Loctite is a thread locking compound that you can apply to the threads of the bolt to help hold it in place. I think there is blue and red loctite, one is permanent and stronger, and one is better for temporary use where the bolt will be backed out at some point.

 

So should I be worried if I didn't use this when I put it in? I have noticed that the some of the bolts have loosened and I just had to re-tighten them. Should I back them out and apply the loctite? Thanks!

 

The little adhesive things will probably hold the spacers in place for a little while if a bolt backs out. BUT, (and its a big but), if heat has caused the glue to melt and get gooey and no longer sticky, one of the metal spacers could slip out and get sucked into your motor.

My suggestion is to take out 1 bolt at a time and clean it with alcohol to remove any oil, then apply loctite to the threads, then retorque to spec. Only do 1 bolt at a time so that everything remains tight around there so none of the spacers shift while removing its bolt. After all of them have loctite, then let it cure for 8 hours minimum before driving. It wouldnt be a bad idea to put a lock washer between the bolt head and the supplied washer either.

Call me paranoid, but believe me, a spacer sucked into your motor would be about the worst sound you will ever hear inside your car.

 

WOW. Those spacers can come off inside your plenum? I thought if the bolts that Tony sent were tight, then the bolts would go through all the way down the the bottom of the plenum? Is the loctite resistent to heat? I could have sworn that Tony had posted something about all his pieces being resistant to heat. Man, now i'm paranoid

 

The bolts do go all the way down into the lower plenum, but they are the only thing holding the spacer in place other than a little dap of glue. If the bolt comes out, the spacer could too. The spacer itself is metal and the little rubber adhesive thing looks like high temp silicone, so both would be heat resistant. Its the glue that I dont trust.
Red loctite will hold up fine to any heat in the plenum.