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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Feb 11, '08 From Auckland, New Zealand Currently Offline Reputation: 0 (0%) ![]() |
thats alright QUOTE how would i go about modding my ACIS? rather than tell you how to mod it heres a way how not to mod it ![]() http://toymods.net/forums/showthread.php?t...;highlight=ACIS (also I recommend a new thread for 3SGE ACIS/Beams discussion) I've been playing around with ACIS recently and I've discovered a few things about it, The basics ... when the vacuum diaphragm pulls the throttles, the larger diameter in the corner of the inlet pipes open up (under the lid) for high rpm and when there is no vacuum to pull the throttles are free to return to the constricted low rpm position. A few problems noted with ACIS: 1. When switching between high and low rpm modes, the vacuum diaphragm sometimes get stuck in the high rpm mode 2. The engage point is too late First experiment was to see how the car behaved with the throttle pull lever tied up with cable ties as to lock the throttles in the high rpm position, What I observed with the butt dyno was that under full throttle the rpm range where the car would "suddenly get up and go" was lower down, noticed in terms of road speed 65kph before, 55kph after (2nd gear) so in other words 5000-7000 was the get up and go range, without ACIS constriction in the intake the get up and go range was observed from 4000 to 7000. No loss in acceleration was noticed from idle to 3000 under part throttle, but loss was noticed under full throttle, between 3000 and 4000 I couldn't tell either way in neither part throttle nor full throttle whether ACIS was better in low rpm or high rpm mode.... This suggests to me that 4000 is a better changeover point than 4800 for performance. 4800 is an rpm not reached by normal driving due to speed limits & gear selection thus ACIS seems to exist for the purpose of keeping intake noise down at legal road speeds rather than for improving low rpm torque as midrange torque takes a hit with this setup. My proposed solution on how TO mod the ACIS, is to gutt the vacuum actuator system and replace it with a motorised cable pulling actuator triggered by a frequency switch relay at 4000 rpm the signal could be obtained by the ignitor right behind there. -------------------- Mike W
1996 Toyota Celica ST205 GT-FOUR GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC 269awhp / 273ft-lbs |
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Apr 24, '08 From Orange County, CA Currently Offline Reputation: 33 (100%) ![]() |
on the 2zzge was the stock exhaust manifold and downpipe ported. I only have stock exhaust manifold and shop made downpipe. Yes its said to be that the beams 4th gen 3sge exhaust header is superb in its flow characteristics and design. My guess would be grabbing a dremel tool and porting that by hand what else?? hmm would it be worth doing without a before dyno and after dyno. Ugh taking out the alternator and slim radiator fan just to remove the header what a pain....
But if stock exhaust is welded on inside of manifold then we can't port it by hand with a dremel tool right??? you said 3kw at the wheels, hmm then that $850 spend on stainless steel exhaust header and downpipe wouldn't only gain 1.1kw like you said before Rusty. still don't believe 4th gen can rev that high huh delusionz? don't worry I'll post a video up soon in my thread. I won't make it too 7,500 rpm I'll make it to 7,450 rpm ![]() This post has been edited by BonzaiCelica: Jul 2, 2011 - 4:53 AM -------------------- For Sale Items:
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Lo-Fi Version | Time is now: August 4th, 2024 - 9:04 PM |