chris89 said:
"Oh, what a feeling..." :evil2:
It's not a huge circuit that would need to be built, but I don't think it's worth the effort.
How to Raise Secondary activation?
- Thread starter chris89
- Start date
"Oh, what a feeling..." :evil2:
It's not a huge circuit that would need to be built, but I don't think it's worth the effort.
Lmao @ Nick. Congrats on the two-legged tumor btw. A pity you weren't there.
SupraMan: No sorry, wasn't me. I'm turbo.
SupraMan: No sorry, wasn't me. I'm turbo.
jetjock said:
Well, you could still try it, the amount of benefit should be about the same. :naughty:
Won't it have to be changed in the ecu? The ecu controls the opening and closing of the intake valve, correct? This may not gain any power, but would seem to have a more aggresive power band.
Fuzz420
Are U Here 2 take My Baby
Changing the code would the best way but that's easier said than done. As CRE points out there are several ways to alter the conditions under which the valve functions by manipulating the signal. I seriously doubt it'd be worth it though as 99.9% of the time Toyota knows what they're doing. You can bet they did a lot of testing too.
Remember that while nobody's perfect the Japanese aren't exactly dummies as engineers. All one has to do is look at their civil engineering or shipbuilding. Designing cars is easy compared to, for example, supertankers or that massive suspension bridge of their's with the nitrogen filled cables. They're not exactly stupid with electronics either. Amazing to those of us old enough to remember what "Made in Japan" used to mean.
Remember that while nobody's perfect the Japanese aren't exactly dummies as engineers. All one has to do is look at their civil engineering or shipbuilding. Designing cars is easy compared to, for example, supertankers or that massive suspension bridge of their's with the nitrogen filled cables. They're not exactly stupid with electronics either. Amazing to those of us old enough to remember what "Made in Japan" used to mean.
oops sorry jet i thought it was you i guess not i think i read it in the acis sticky.
edit it was jong who posted it he has/had the acis on his turbo (all the info is in the acis sticky)
edit it was jong who posted it he has/had the acis on his turbo (all the info is in the acis sticky)
I figured that Toyota wanted it to open at 4k rather than 5k for a smoother power band, If it were to Switch over right after the Torque is made, It would be a very aggressive push in your seat as its revs gracefully to 6,500rpm. If someone Could Explain to me what Would have to be done, I'de gladly Pursue this.
Even if you did change it what are you going to do about ignition timing? The ecu alters it at the same time it activates the ACIS.
I was going to leave the ignition at Stock 10* BTDC. I'de like to know how to adjust the activation rpm from 4,000rpm to 5,000rpm.
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JJ Is talking about the Ignition curve at 4000 not the static timing Chris.
Sorry but going by your answer you have a limited understanding of how the system works and it might be better to leave it alone before you "improve" it to the point it doesn't run correctly.
Sorry but going by your answer you have a limited understanding of how the system works and it might be better to leave it alone before you "improve" it to the point it doesn't run correctly.
I understand how it works, And i'm aware of the curve at 4,000rpm, But raising the activation to 5,000rpm really shouldn't effect it's performance. I can see what it would be like if it activated at 5,000rpm by going 60% throttle until 5,000rpm then go to WOT (100%) It fiercely switches over to Short Runner mode, It makes it alot more aggressive.
You will starve the engine for air if you hold the valve closed above 4000 RPM. I will owe up right now to having fucked with it a dozen or more years ago, just to see what it did.
It was a gutless turd unplugged. Pulled hard above 4500 rpm though. It really kicked in at that point.
That valve increases the low speed torque.
Besides, you would have to remove your EFI to install secondaries. And you really don't want that.
It was a gutless turd unplugged. Pulled hard above 4500 rpm though. It really kicked in at that point.
That valve increases the low speed torque.Besides, you would have to remove your EFI to install secondaries. And you really don't want that.
Huh? Remove the Electronic Fuel Injection to install Secondaries? By the Way, the ACIS butterfly effectively acts as Short and Long runners, Closed = "Long Runner" mode for low end torque, and Open for "Short Runner" mode for High RPM Power. ACIS provides 2 effective power bands. I'm going to make a video to show What it would be like if it was raised to 5k rather than 4k, I'll do a 4k Switch over and a 5k switch over.
"Secondaries" refers to carburetors.
:sigh:
No. Reread the sticky. It makes on smooth powerband, not two.
:sigh:
No. Reread the sticky. It makes on smooth powerband, not two.