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Gimpster · 09-20-2007, 02:26 PM

Gentlemen,

When I was at the track a couple weeks ago, I did a few back to back runs. For two I left ACIS as it was, no vacuum and "open" in its sprung position... which happens to be butterfly UP joining both compartments.

I trapped ~~77mph both times (1/8th mile).

I then ziptied the ACIS closed, and I lost about 3mph.. the car did feel a little slower.

SO, I'm a bit confused here. Is that what you guys would expect? After reading on clublexus and toyotanation, they make it sound like it should be the other way around. However, except for the butterfly in the way, I expect when it was open to have more power, and it did.

SO#2, does it make sense to totally remove the butterfly and machine off it's mount from the side cover of the intake?

Today I just put a vacuum hose on the ACIS -> strong port in intake. Those Camry guys claim its the next thing to string cheese, but I can't tell a lick of difference. I'd like to see if my milage goes up/down though having that flapper closed.

I need to get a VPW capable OBDII logger (my old ELM only does ISO) so I can see airflow #'s, that would put the nail in the coffin.

---

Conor, this is why I want to get a second intake... to do some experimentation on the dyno

I would like to get a few "experiments" ready and back-to-back pull them. I'm friendly with the local dyno owner, so the time would be pretty cheap.

09-20-2007, 02:26 PM	#1 (permalink)
Gimpster Cage Fighter Join Date: Mar 2007 Location: Des Moines, IA Posts: 674 Thanks: 5 Thanked 47 Times in 44 Posts Blog Entries: 2 iTrader Rating: (0/0% )	ACIS assistance please. Gentlemen, When I was at the track a couple weeks ago, I did a few back to back runs. For two I left ACIS as it was, no vacuum and "open" in its sprung position... which happens to be butterfly UP joining both compartments. I trapped ~~77mph both times (1/8th mile). I then ziptied the ACIS closed, and I lost about 3mph.. the car did feel a little slower. SO, I'm a bit confused here. Is that what you guys would expect? After reading on clublexus and toyotanation, they make it sound like it should be the other way around. However, except for the butterfly in the way, I expect when it was open to have more power, and it did. SO#2, does it make sense to totally remove the butterfly and machine off it's mount from the side cover of the intake? Today I just put a vacuum hose on the ACIS -> strong port in intake. Those Camry guys claim its the next thing to string cheese, but I can't tell a lick of difference. I'd like to see if my milage goes up/down though having that flapper closed. I need to get a VPW capable OBDII logger (my old ELM only does ISO) so I can see airflow #'s, that would put the nail in the coffin. --- Conor, this is why I want to get a second intake... to do some experimentation on the dyno I would like to get a few "experiments" ready and back-to-back pull them. I'm friendly with the local dyno owner, so the time would be pretty cheap. Last edited by Gimpster; 09-20-2007 at 02:31 PM..