My Guiniea Pig comment was replying to Randy about trying it with his SC.....but GEEZ...
If you can't remove and replace 16-17 bolts......you should have taken Shop in High School....instead of Home Ec!

 

my main concern was those 2 bolts inside the manifold that I prob wont have the extention for, one guy said he cut them up takin them off with plyers, but i dont want to f*ck with that.

 

Honestly....it is really easy.
All you need is a 10mm wrench, a 10mm socket / wrench, pliers and a flat blade screwdriver.
There are no bolts inside the manifold you have to mess with..
The ones you are talking about are the studs that have a nut on top and are screwed into the base of the manifold. You dont need them anymore as you are replacing them with new bolts.
The easist way to get them out is to take the two nuts you took off...put the first one upside down...put the other one on top of it and snug them together. This will allow you to use a wrench on the bottom one to remove the stud. No plyers.
You only need the pliers for the hose clamp on the side.
Drive on down to GA ...and I'll have it on in 15 min.

 

After installing my 3/8" spacer this afternoon, there was a more noticeable growl. There was also a little more pep when accelerating and the throttle felt more responsive...subtle, but noticeable.

During the install, however, I wasn't expecting to find as much oil as I did in the plenum. There was an oil film all over the surfaces that took me awhile to remove with a cloth sprayed with intake cleaner. Is this normal? Anyone else notice this during the install? My car only has 7500 miles!

 

I had a fair amount of oil in there as well, I think it's probably from a slight over-fill.

 

It's been a very long day.
But one thing I can definitely say is that the spacer is no joke.

Crawford should be afraid, very afraid.

I will be posting the gains that I got from 2.19 dyno day shortly.

 

I would say that a loss a 10HP would be a joke in comparison to what I felt. from the line, and up till say 5000 RPMs, the car was a PIECE. I took the plenum spacer off yesterday, reset the ECU, and the car is SO much faster. It is a night and day difference. I really could care less if I gain some top end if I have to give up what I did in the low end. Who wants to buy and 1/4 inch spacer? haha I am glad that everyone else seems to be having such "good luck" with this mod!

 

Your car is a FREAK.........
Sorry.
(How much is Crawford paying you??)
J/K

 

Does no one else agree that it takes longer to get the air flow to the same air velocity as before with no spacer?

 

Trust me.. I wish they were... and I wish this part worked on my car. I will not be buying any other plenum either. My car must be a freak. She must have gotten pissed when I put the part on. After taking it off yesterday, it feels like I have more power than I did before I spacer. Does ANYONE who actually paid for this spacer have a dyno test? Also, I am curious to know if a dyno takes into consideration take off speed, or is it a reading of 3rd or 4th gear in which the car's "air velocity" is already up to speed? Sorry, never had a dyno before..
Guys, I'm not trying to be a pric%, I am just telling you what my experience was. The quality of the part and the customer service was top notch. It just didn't work for me. I would buy from them again.... just not a spacer. haha

 

The oil is from the EGR system. A small amount of blow-by oil gets recycled through the intake (ie the hose on your intake pipe) which then deposits a little oil on the inside of the intake manifold. It's completely normal on any type of late model car.

 

I don't know, maybe they're afraid to admit it? Maybe the increased noise tricks their mind into believing the car is quicker. Maybe the reduced lowend followed by a big surge in pwer above 4500rpms makes them believe the car is quicker at all rpms? I see this all the time when it comes to mods, especially modified intakes and intake manifolds.

I know I bring up my Maxima a lot, but it's just the prime example of what could possibly be occuring here. When you add a JDM variable intake manifold to the 95-99 Maxima (uses a fixed plane manifold), the car looses 10-12whp from ~3500-5000rpms and then gains ~10-45whp from ~5500-6500rpms (stock rev limiter). Numerous people swear to God that their car is no slower in the midrang and that they felt no loss and that the car is a whole lot quicker in the topend. Then they go do the dyno and see the clear loss. Then they go to the track and find out the car is not any quicker with the manifold and often times it's fractionally slower. The intake manifold requires a modified ECU with a 7000-7200rpm limiter so that the shift points compensate for the elevated powerband. The ECU also restores all the power that was lost in the midrange. With the ECU, 1/4 mile times drop by .25-.30 and 3+mph in gained.

I think it's quite possible that these other guys might be experiencing the same thing. Usually when someone like yourself posts a "this mod didn't do what it's suppose to" and most everyone else is reporting minimal to medium gains plus noise, I'm more inclined to listen to the guy like yourself because it seems like a more honest opinion.

I'm very curious to see the dyno results and I hope that those showing the gains had dynoed on the same machine prior to install. Otherwise it's just worthless data.

 

Shawn,
Sorry it didn't work out for you. If you want, you can send it back for a refund. Or, if you can get it pre/post dynoed I'll give you the same refund (and you can keep the plenum spacer).

The number of dynos are stacking up and so far they are all showing significant +gains. With increases in TQ too. Just last night 2 more pre/post dynos on two different cars did the same. I don't have the plots or data for them but the owners will post it soon.

Just as a test, re-install your plenum spacer and drive it... Mabey something wasn't installed correctly.

At this point I am convinced this is a real mod with positive gains. I also expect that it performs more or less the same as all the other plenum mods on the market.
THE GOOD NEWS IS MORE DYNOS ARE ON THE WAY!!!

I know this mod works so I have no reason not to promote more dynos being performed. More Dynos is More Better!

Tony

 

Hydrazine, check your PM's

 

https://g35driver.com/forums/showthr...d=1#post449767