Fixing ACIS...

[cuel]

My favorite teacher once said, "Never believe anything I tell you is true. Go do your own research, and find results that are based on fact." It would be hard to argue the fact that it works exactly like its supposed to without testing it, and getting actual, real world results. I already had a pretty good idea that with just bolt-ons, there wasn't gonna be any change to how the ACIS operates, or the fact that it works quite well. Wonder what effects longer duration cams, with a higher lift, are going to have, if any.

I am curious about the 2jz plenum idea, though...

 

[CRE]

I suspect that different cam duration and lift may not change things too much. Different cam timing would probably move the peak of the curves to a greater and perhaps more noticeable degree.

What 2JZ plenum idea? GE or GTE? The GTE design seems a pretty poor idea for a N/A. They made so many changes from the MKIII to the MKIV and they kept the same style intake for the N/A. Now if someone's talking about fitting on a MKIV GE intake I'd be interested in knowing the differences.

 

[TurboFreak]

So I was fiddling with this and I definitely fixed mine! It's a night and day difference. Even when I picked my brother up he mentioned my car felt better/faster/sounded better and he's not even into cars!

 

[cuel]

CRE: It was the GE plenum. It was being discussed over on SF. I'll have to find the link again. The ACIS system on it is supposed to be identical to ours, but a bigger valve or some such.

Edit: http://www.supraforums.com/forum/sh...&highlight=ACIS--+acoustic+performance+thread

Defiant7M was talking about it, but not really in depth.

 

[AJ'S 88NA]

I've noticed with the runs I've logged with the Maft -Pro that the ACIS at mid to WOT always opens at 4k. It makes quite a difference in the AFR when it does the lean direction.
I don't know what the AFR does with the stock ECU as I just installed my WB with the Maft-Pro.

Cre: You've run the stock O-2 with the Maft-Pro, have you noticed about 2-2.5 lean spike around 4k?

 

[CRE]

It's closer to 4200, and yes, as far as I recall I saw about the same.

I did mention that there will be some finer tweaking available for that soon, didn't I? First, you'll want to get the basis mastered. If I didn't tell you about that shoot me a PM or call me tomorrow.

 

[CRE]

YES, I'm bumping a very old thread.

Would be really interesting for someone with a functioning system to hook a LED up to the vsv and see where it switches and under what conditions!

I'll go one better and log it.... granted I am N/A-T now so my results may be a bit incomplete due to higher manifold pressure at lower throttle, but it's a start. AJ could log his though for a closer image of things... his car's not stock either but it's closer than mine.

Does anyone know which pin at the ECU is the ACIS VSV? I'm assuming it's VSV1 or VSV2 next to the OX pin.

 

[supraduper]

90 percent sure its vsv1

i glanced at the wiring diagram the other day in the tsrm

 

[CRE]

Yeah, I'm not even seeing VSV2 listed in the TEWD.