So, we have found 1 negative (besides the plastic thing) about the Kinetix. No Forced Induction. This may not be a big deal to most people since most will not be shelling out $5k for this mod, but I believe a subject that up until now may not have been addressed or people may have been wondering about.
As for me, I am done.

Thanks for reading...

 

A) If 350xfire was trying to mess up the thread, all_bark, you are helping him...

B) If he wasn't, he should be welcome to his opinion. He could just have expressed it in another thread since this was not the topic been discussed here. Then we are welcome to either read your thread or not as we choose to and not have this bunch of armchair-part-design mixed in here...

And thats my .02...

 

My appologies to everyone. I just hate the haters that will not allow others to raise important issues without getting all offended. All I'm after is the facts so I can make an educated purchase in the near future!
If you bought the Kinetix, that's fine. I only want to gain some knowledge here.
Educate me if I'm wrong. I have been before and have admitted it too.
May be in, let's say 50,000 miles all of you with Kinetix can start a post about how some SOB from Texas was wrong. I will gladly accept the truth!

 

350xfire, you are very new here and need to understand one thing about this Kinetix plenum. There was never a day that it was meant for FI or ever marketed to FI owners. This particular plenum has always been advertised as a NA application. For this reason, Kinetix is coming out with an aluminum plenum that replaces the upper and lower pieces designed specifically for FI. Because you are new and could not have seen the 100 threads on this topic already, I forgive you for being a total punk about it. I also wonder why all_bark would get so defensive about this as he knows also that the FI plenum is a future Kinetix project. Oh, I know. It's your offending tone. Chill out. Why don't we all just stop this nonsense right now? The search function works great and will help you build your knowledge base BEFORE you open your mouth and make yourself out to be a fool, which you probably are not.

 

That is excellent information, thanks. I am definitely interested in the aluminum piece. Any one know when it will be available and cost? I'll buy one if the numbers are right. Hell, I'll be the first one to buy one if I'm allowed to.

BTW, I don't think I was being a PUNK as you said, but you are also entitled to your own opinion.

 

You have valid points about boost and pressure build up on flat surfaces. I know first hand as we had to build a pressure chamber to pressure cure these plenums with a top and bottom that each had over 800 square inches of arear for pressure to build, given they must be taken up to 50 psi, thats 40,000 lbs of pressure on those plates.

We have decided to warranty any plenum used on FI up to 7 psi. Not any higher though. This is the main reason that when we incorporated the center supports, we decided to have them bolt through, as opposed to simply press fit.

The center supports GREATLY reduce the amount of flex that would be experienced with FI. The actual flat area of the plenum is about 13" X 10" or 130 square inches. So the pressure build up at 7 psi is about 910 lbs. There are 14 bolts that hold this plenum in place.

We also have new confidence with a FI application because of our new revisions, and think 7 psi should be no problem. This material when subjected to flex, gives, it does not break.

 

Good info, thanks LSD.

 

Just to be extra sure, I think I will do some testing this week and see how high I can pressurize this thing.

I can do some pressure testing and get an actual PSI limit I would think by mid next week, then we can know the real world limitations concerning FI, plus I think it would be fun. My guess is that I can get it over 10psi and still hold a seal, but I will just have to see.

 

lsd, I think you are on the right track by testing the plenum with FI. However, from your reply, it seems as though you expect some flex out of the unit. Correct? If this unit flexes any, this will pretty much translate into wasted energy. Wasted energy translates into wasted pressure that would be otherwise available to make horsepower. So, I believe that some horsepower loss will be experienced as a result of this flex. Throttle response may also be sluggish (lag) since the flex will have to be overcome before the full power potential can be achieved.

The other concern would be as this material flexes, would it not be expected to experience some fatigue and possibly crack around the bolt holes?

Somebody posted earlier that you are working on an aluminum piece. Is that correct or just rumors? Would it not be somewhat easy to take the plastic one to a foundry and have them make a mold for cast aluminum pieces? I don't know how pricing would be affected, but may be worth a try.

Thanks

 

350xfire, the thread you need to read. The pics are the first prototype and the FI plenum will resemble this, but may not be exactly this. This plenum is more than likely still months away.

https://my350z.com/forum/showthread....Kinetix+plenum

 

the aluminum piece is down the road a few months. for those that cannot wait they could give this a try (as lsdunique said, up to 7 psi) if it gives them trouble the can send it back.

it just bothers me when someone who is new, puts something down, without taking anytime to do any research on the product. Everyone who has followed this knows that it flexes and that in the future it could possibly get weaker but as this thread states, if you have one of the original ones, without the ''torque down enhancers" you can either send it back (on kinetix's dime) or keep it until such time it needs to be fixed.

So, once again, people who do a little research will find answers to most of the questions they have, but people who just jump right in with both feet and start off with negative comments about something they know little of of really get me going. Not your personal knowledge, your knowledge of this plenum.

If the flex worries you there is always crawford but then you lose the factory strut and engine cover, not too bad if you do not mind.

and if that does not work the last thing you can do is keep the stock plenum because there ain't any other choices out at the moment.

but that is something everyone already knows.

welcome to the site.

 

The aluminum plenum looks pretty awsome. Can't wait to see the finished product.
Thanks for the link.

BTW, I have doen a search function on this intake and there are about 155 posts. About 130 of these are the kind that say "I got my plenum today and"... The problem is that I don't have all day to go through these, especially wen half of them don;t contain any useful information. I'm sure I'm not the only one who has asked a question that has been answered 100 times. This is what a forum should be for.

I will make this my last post on this thread and put this thing to rest! What a ride it's been.

 

I dont think the fluctuation in air volume due to minimal flex will change throttle response nor HP output on any measureable scale. We are talking about an incredibly small change in plenum volume.

I will do some testing, and also measure any flex throughout the center.

 

I seriously doubt 350xfire was trying to high-jack OR mess-up this thread. He has valid concerns. I share his concerns.

350xfire...excellent choice on the G35 Sedan!

 

I agree, 350xfire had valid concerns. It was unfortunate that a spitting contest and a page was wasted by those that have, who have elected to defend the product vs those that don't. This happens too many times on my350Z.com. Isdunique, started this thread by sharing his concerns and the actions he was prepared to take. Finally, he had to put out the fire. I have the Plenum, have driven approximately 150 miles since installation and have not had ONE problem. The sound and performance increase is everything that all_bark and Chris described and then some.

Will attempt to dyno within the next coupld of days and show before and after results. Upon receipt of Kinetex Cats will do again and again post results. IMO the Plenum is AWESOME.

Besides be AWESOME the service Kinetex and Isdunique has provided and has stated will continue to provide is EXCEPTIONAL!

 

This board attracts so many drama queens.

 

Let me know how the FI testing turns out, I am dead on 9PSI and miss my STB. It was painted blue and looked nice.

 

Thats what internet car forums are all about, its fun and it sucks

 

I'm sorry that I got caught up in it!






my bad

 

I have a question........my Kinetix plenum will be shipped mosy likely next week......think it will will work with no2? I sure hope so.......buying a kit this week.