VDI And Ports...Wire Open Or Leave Alone?
 

Alright, I have already wired open my VDI, and as soon as the weather permits, my 5th and 6th ports. I have no cats, so I can also remove my air pump. But, I have read a lot on NOT doing this. Is it true that a fully functioning port system is better than wiring it all open? I have already done a search, so no flaming on this please!! Thanx!

I just had a flash back to another thread. In a word "SEARCH" for it. There is lots of good info about what you want to do.

Did you not read my thread? I said I used search, and I got 4,000 posts that really did not answer my question. Read a thread before you answer it! Jeeze, why is everyone around here become rude lately????? WTF???

And BTW, the search function on this forum is very vague. You get results that include the word you type in, I mean EVERY post that has that word. It is VERY difficult to use. And I have been here long enough to know how to use the damn search function!!!!!!!!!!!!!!

If you want a simple answer, then leave the system working as it was meant to work. That is the best way; but I have a feeling you wanted to hear otherwise, so you could get some free horsepower easy. Make the system work the right way and you will have to find power elseware, installing pineapple sleeves will maybe give you an extra 5-8 horsepower, but the system still needs to work. Removing the sleeves will maybe get you a lil extra on top but your overall power band will suffer. The net horsepower over the entire power band is more important than just a max power output. For example the neon r/t makes 150 horsepower peak, but the rest of its power band is weak. So if you want to drive around all day at 4500 rpms then go ahead and remove every inovation mazda added to its masterpiece and throw on a carb and swap in an old school distributer, maybe even duct tape a push rod to the motor just for "good ol times" sake.

lol, dont take it too bad man, let them be.

from my experience a working 6 port system feels much better than having them wired open, but ive heard that if you use the Pineapple Racing 6 port sleeves there is barely and torque loss with them wired open, so you wouldnt really need the system to work right, hope any of that helped. And also, with vdi AND ports being wired, it would hurt even more, it would be best to keep the VDI working properly if you are gonna wire the ports, VDI manifold is supposed to open at 5k rpm, when the 6 ports are supposed to be fully opened.

No offense to the first gen guys with stock carbs and distributers.

man, people go out of the way to be jerks dont they rico??

Thanks Agent_d! You're a real pal! Anyway, so I should wire open the ports, and unwire the VDI until I can afford the $ and time for Pinapple sleeves? Thanks guys!

BTW Agent_D...Great write-ups on the gauge cluster and cleaning the ports!!!!!

thanks man, yea, if you wire the ports let the VDI work normally so you dont absolutely kill your mid range power :)

After something has been said a thousand times and the point doesn't soak in, a different manner must be taken.

If needed I can dig up probably five threads that clearly explain the pros and cons of this debate.

Obviously a functioning system is better than one that doesn't work at all. The VDI and aux ports all need to work properly to get the max benefit. You will loose low end torque when you remove/wire this stuff open. Personally I wouldn't sacrifice this since I don't redline my car on the street 100% of the time. I would recommend fixing the problem, if you have one. Then wire everything open and feel the shitty difference. I did this and I felt a huge power surge at 5.5K, but I was down on power below. The surge I felt was the normal power anyway. G-Tech testing showed a slower 1/4 mile and 0-60 times with everything wired to the High RPM setting since I needed to accellerate past the 5.5K RPM range with an in-efficient intake setting. If you are on a race track and you are shifting at 8K RPM all the time and are always on the VDI and Aux ports, then you should remove them, but street cars that need to accellerate from a stop should keep them as the are beneficial.

Have fun with what ever you decide.

I think somebody wants a cookie! Or how bout a small parade in your honor? Would that make you feel happy? Hmmm? Give the man a prize! He knows the answer to a question. Read my signature next time...

Yeah, I have noticed a cut in torque! My system is in perfect condition, so looks like I will unwire the VDI! Thanks!

And breesje, that comment after your your was intended for Samps, not you! Your comments are more than welcome!!!

The search function works better if you check that box that says search subject line only. Takes less time and narrows the search range by quite a bit. Also tell the search engine to search only the 2nd gen forum. Samps wasn't being a jerk, he like many of us here has just seen this post 3268 times and didn't feel like answering the question AGAIN. So don't be pissed at him.

If by unwire, you mean to pull the 4mm air hose to the vdi actuator, then you're hurting your top end from around 6k and up. You do realize that this has no effect on low end performance and will not make up for the wired open aux ports. The above was correct, if your mods are not maximized like mazdaspeed7 or others, you're 0-60 times will hurt with a wired open aux port; I've done it, and a early 80s corolla would kill me from light to light sprints, and yes I did have Mazdatrix true dual system at the time.

Actually, your low-end WILL suffer by wiring open the VDI. But for some of us, its worth it, so we can remove our airpump.

That's why I leave them alone since they're all working good. BTW, I think you misread my message about the VDI. I made no mention of wiring the VDI open, just the aux ports. Also, I said disconnecting the air hose to the VDI actuator would have no effect on low end; kills top end though.

I raced my 7 with four other cars making way more torque. Even the miata was making more torque than me. i beat all. Whats interesting here is u guys never asked what kind of driving he will be doing and if its his daily driver. That makes a big difference in someone elses opinion. Im worried about when I race my 7 on the weekends and I can Say this.....

I launched my car at 4k dump and peeled out for a split second at 4.5k when I got traction and took the whole shot over everyone else. My car has sleeves gone and VDI open. SURPRISINLY I make lots of power under the VDI operating range. 4.5k and even 4k makes more than enough power till 5k. When mods start adding up im sure the VDI rpm point can be moved down. If I was stock im sure it would kill my low or 4k rpm launches but its not.

The perfect setup would be to glue the racing sleeves in and find an electronic control VDI. That would rock. Im waiting for someone to figure it out... The activation poiiint would go like this......
Put the car on a dyno with VDI wired shut then another test with it open and compare the crossover part. Right were the rpms fall would be were you would want the VDI to activate. Im sure somepeoples wired setup sucks but I will drag anyone with a working system and same mods and I garantee I will win.

rico05 - If you took what I said as rude then you probably need to double up on the valium dosage. Chill out dude. Read the small writing on the search page and use the optional parameters to limit the search and it will return some good threads to read. Looking through the archive in the 2nd gen section has some good information also. Was I rude this time? Maybe they should ban me from the forum:)

well if you dont feel like answering, dont open the thread and make jerkish remarks, some of us acutally like to help our fellow rotor heads.