KillaKitiie

I used to think that taking the aux ports out would take 20 hp from your bottom end while only giving you 5-15hp up top.A large part of me thinks thats on a stock motor...

Well i removed mine and i notice more yes im saying it more low end..midrange2500-4500 feels the same but when the tach reaches 4500 the car crunches and a sudden rush follows and im telling you i had to have freed up at least 15hp up there while only getting 5hp down low with no change in mid range.

Call me whatever the hell you want. I think everyone with some kind of porting and bolt-ons should at least try it..

I was thinking it had something to do with the porting i did on my upper and lower intake manifolds.specifically the lower one..because ive ported them quiet a bit actually i dont think i could get anymore out of them, then i took sand paper and sanded the inside down soo smooth you would think its polished. I also took alot of time in shaping how the runners run and bend.
Now ive started porting the tb and im happy with it right now. but im going to re-do it again soon and see if i can get the air to flow more smoother through there while matching it up even better with the upper intake manifold.

Im at my library soo i can only be on for an hour but ill try to check in every day until i get my cable back on

Icemark

Again, your testimony is useless unless you did no other mods at the same time as removing the aux ports.

My suggestion would be to re-hook up the aux ports and see how it pulls with your polish job. I suspect that you would have more low end. This can be proved with simple driving dynos (0-60 or 0-100 without ports and again the same 0-60 or 0-100 but with with ports working).

But doing multiple mods at the same time and then saying " i had to have freed up at least 15hp up there while only getting 5hp down low with no change in mid range" is useless without any way to really confirm it instead of just your butt dyno.

Makenzie71

There is no gain at all to removing them except additional simplicity. Removing them just robbed useable power from down low...on a modded engine, enough power was taken away to notice.

SureShot

About 3 years ago I did a test in my previous NA.
A 3rd gear pull from 1500 to 3500 RPM was 2 seconds faster with the ports closed.

Aaron Cake

iTrader: (1)

Dyno pulls? The "butt" dyno is useless, because it will always lie after you have done work to the car...

Syonyk

Interesting. I'll have to try that - right now my ports are under full manual control with a switch, so this would be easy to try.

And, despite what a few people seem to think, a lot of us spend a good chunk of time in this RPM range. 6k RPM in town just doesn't appeal to me (or anyone near, or behind me).

-=Russ=-

WonkoTheSane

iTrader: (2)

I found that I was able to make acceptable power down low without the ports in. Please note i did NOT say "Better", I said "acceptable". I'm not claiming to make more power than with them, but by adjusting my fuel map accordingly, I don't feel its a hinderance. I did probably gain power, but more to due with the EMS than with removing the ports I'm sure It was a bit dodgy off the line with the stock ECU, though...

cps87rx7se

iTrader: (4)

I am going to do some dyno test runs with my car hopefully soon. I am going to dyno it with no ports open (5&6 and the VDI) see what the power is and when it falls off. Then where the power starts to fall off, is where I am going to open up the 5&6 intake ports. Then dyno that to see where the power falls off, and set the VDI to open up around then. And then dyno the car with everything opening up at the right time to see what the peak power will be. I am hoping to be around 160 rwhp.

Turbo7MN

^ The best way to do that would be to first do a run with both closed, then do another run with he 6PI completely open. Where the lines cross will be the best place to open the 6PI. Then do another run with the 6PI opening at the proper time and the VDI completely open. Where the lines cross between the second and the last one should be the best place to open the VDI.

-Darren

iceblue

Amen!

1987RX7guy

iTrader: (3)

Is this de-ja-voo or didn't this already get posted by this user a long while back?

iceblue

^ different user same idea.

KillaKitiie

Correct ive done no dyno so yes it is useless trying to prove ive made more but the difference was very noticable. Im no expert im just going by what ive found for myself so far and if it was never said i would honestly think ive made some sort of gain!

A dyno just opened in my town and i wont forget but i will dyno it as soon as i can and we can all see what it say's

I need an answer the aux port itself the sleeve im talking about its flat on the end thats inside of the block. Is it true that there is a flat wall the air is hitting before going into the chamber?
Also i removed the sleeve nothing else.

iceblue

When I look the stock 6pi ports on the motor and you rotate the sleeve closed to open and see how it flows I have to say it is totally bs and placebo about any HP gains anywhere and I only see how it is possible to lose low end power and tq. The only possible hp gains I can see is from using pineapple racing sleeves by easing the flow of the induction causing less turbulence.

If no one believes me just look at a tore down motor and stick your sleeves in it and rotate them.

KillaKitiie

^^ that gave me a headache. Anyway i think im in over my head here let this thread die until i can get on that dyno....

Icemark

well lets close this thread then until the originator would like it re-opened (and then he can PM moderator with the link to this thread to do so).