ACIS power mod.

by **bassthrive** » Fri Feb 03, 2006 6:56 pm

I completely removed my acis and ground down the hard edge around the butterfly with a dremel.

by **SleeperSolara** » Sat Feb 04, 2006 9:51 am

Yeah i will post up pictures later.

I was thinkin' about playin' wit the screw on the left side of the intake manifold to see what happen..........

by **CASTRO** » Sat Feb 04, 2006 1:37 pm

that1mexguy wrote:Yes please, pics will help illiterate people like me.. thanks!

this mod is for N/A guys only. if the car has a s/c, them the system is gone.

by **SleeperSolara** » Sat Feb 04, 2006 4:05 pm

Will try to post pictures soon.

by **SleeperSolara** » Tue Feb 07, 2006 2:53 pm

Well here the link to my post wit pictures.
"Nyyankee351" couldn't post pictures cause it was rainin' up there at his place, and at my place nice sunny weather wit a cool breeze.

Link to my post wit pictures.
You can refer back and forth.
http://www.solaraguy.org/viewtopic.php?t=23293

Enjoy.

by **Russian Mafia** » Tue Feb 07, 2006 3:41 pm

Are you sure that diagram shows our engine???

Here is one from cp-e

The last one seems to be more accurate cuz I feel that increase in torque at around 4k rpm.

Am I missing something???

by **bluesolara** » Tue Feb 07, 2006 4:24 pm

Only for 6cyl no I4?...

by **lilm** » Wed Feb 08, 2006 8:11 pm

i did it and it seems now like a lost a bunch of torque

by **SleeperSolara** » Thu Feb 09, 2006 8:07 am

lilm111 wrote:i did it and it seems now like a lost a bunch of torque

Yeah i know........
The power suppose to feel smoother, i guess. :-?

Might change it back to see if diff, i want to play wit the screw though to see if any changes wit the ACIS mod closed.

by **lilm** » Thu Feb 09, 2006 2:49 pm

lol.....i miss my little bump......im going to put it back right now lol

by **Toysrme** » Mon Feb 27, 2006 4:55 pm

Depends on which ACIS system you put it on. The twin TB intakes, nobody has figured out what is optimal yet. The older single flap ACIS systems, velocity is increased by leaving it closed, giving you more power.
The engine will still take off around 4000rpm because the ECU's don't advance timing until it also opens the ACIS's VSV.

A/T's stall @ 2400rpm. Giving them a few more coals on the fire for that split second let's them accelerate into the fat of the powerband where the car v6's take off.

Instead of going from peak torque @ stall speed, dropping 10lb-ft, then gaining it back a half second later, it feels slower. You don't get's the burst of acceleration @ 4100-4200rpm when the flap would normally be closed.
The only way you can see what happens, is locking the torque convertor (To prevent torque multiplication skewing data) on a dyno, or accurate road testing that takes into account the smoother onset of power.

The screw is simply an adjustment as to how far the ACIS flap closes. Unbolt it from the manifold and look at it to see how it's closing... That's the only way you're going to know. Once it's closed, it's not gonna close any more.

It's been a few years now, but I remember mine being about a screw turn off from as perfect as it'll get without sealing the seams.

by **SleeperSolara** » Mon Feb 27, 2006 7:13 pm

^^^^
So i can tighten the screw all the way where the thingy is flat.......
And it will close the ACIS flap all the way????

by **Toysrme** » Sun Mar 12, 2006 1:57 pm

That will *close* it all the way (WIthout sealing it), but you've completely missed the purpose of doing it.
What you want to change, is how soon the ACIS is closed.

by **dominoSLEV6** » Sun Mar 12, 2006 11:20 pm

I don't really understand here, I mean I do but I sort've don't. I guess I'd have to try it and maybe I will if it's reversible.

And as for that dyno, it's probably on a manual transmission. This is my stock dyno, very similar, and the dip is definitely there. It would be nice if someone had the access to a dyno and could test this out.

-chris

by **w00zi** » Sun Jul 22, 2007 12:15 am

we need pics

ACIS power mod.

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