Aftermarket Cams, IDLE issue.

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AE86_Z
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Joined: 20 Mar 2005
Posts: 79
Location: Hungary

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Wed Aug 13, 2008 10:53 am Post subject: Reply with quote
Hi all!

All the parts installed Smile

Conclusion:
HKS 272 8,1 camsahfts with factory ECU can't idle normally and the engine usable after 3000rpm. But the sound is really nice Smile
We tried to advance and retard both cams 5 degrees. The butt dyno said it was better on -5 -5. We have some problems with setting the ignition timing, bacause of the crappy idle.

On the other hand:
The engine pulls very strong above 6000 rpm. I think I have got at least 10 extra HP at topend. The 7800 limit is not enough. I'm sure about the engine can't reach the peakpower at 7800.

On friday we will go to dyno, and trying to finally tune the cams with factory ECU. I don't mind the shit idle and weak power under 5000 because it is racecar. But I can't advise these cams for streetable use with factory ECU.

I need to buy a stand alone or a piggyback ECU to reach all of the extra power what cams can do.

Also installed: the HKS oil up kit and new oilpump (hicomp 4AGE) for more oil pressure
"idle" 500-1000 - 2-3 bar
>2500 - 6-7 bar

Question:
I'm planning to buy a Greedy E-Manage Ultimate piggy back. This version of the E-manage can move the revlimiter but only if it's a fuelcut. Does anyone knows it's fuel or ignition cut in the 4AGE ecu?

Pics:
http://ae86.blog.hu/2008/08/09/nyaraltunk_1
http://www.aeu86.org/viewtopic/cams-for-...stock+4age[/u]