How do you get the choppy idle?????
#1
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How do you get the choppy idle?????
I have evo 8 and have hks 272 installed. it doesnt have any lope what so every. I saw videos on the tube of the same cams on a 8 loping like a boss. Is there anything i can do in the maps to help. I have search the site but only find info on mivec. Any info would be greatly appreciated. i love to learn
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#7
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no wonder it idles smooth. stock timing in the idle area is 5 and I knocked his back to 3/4 depending on how much lope you want. I'd start at 5 though since hks cams seem to lope hard than BC's anyway.
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#8
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Drop the idle at load 10-40, RPM 0-~1000 to 10*, rinse and repeat til you get a favoured lope. Then smooth cells both down and across.
You'll probably have to reset your base idle as well as adding timing increases RPM.
You'll probably have to reset your base idle as well as adding timing increases RPM.
#12
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The HKS 272's don't have that much lift so they aren't gonna have too much valve overlap (which is where the loping sound comes from when at idle)
Other cams like the GSC S2 and Kelford 272's are high lift cams (around 11mm) and lope much harder than the HKS.
Other cams like the GSC S2 and Kelford 272's are high lift cams (around 11mm) and lope much harder than the HKS.
#13
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thanks alot guys!!!! this is seriously the best forum i have been apart of. im going to tune it alittle more. And probably go ahead and order some gsc s2.
#14
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My IX barely sounds like it has cams and im running S2s with idle set to 1030 timing at 6* and mivec at 0. I guess i can lower the idle but i do not want to create issues doing so.
#15
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^^^^^^
^^^^^^
This.
The HKS 272 is an outdated cam which is generally considered 'mild' compared to the newer cams on the market these days in the same category. The GSC S2's are a great choice. They provided a great lope (which can be tamed if don't want them to lope much) and they outperform the HKS 272's as well. Just be sure to purchase the GSC Beehive valve springs which are required with the S2's. You can use these springs with the factory retainers and keepers too which saves you nearly $200 as well
Here is a video clip of a customer with S2's we installed in his Evo 8 and he specifically wanted an aggressive, lopey idle.
http://www.youtube.com/watch?v=11yc_...e_gdata_player
-Jamie
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Last edited by Dynotech Tuning; Dec 31, 2011 at 09:53 AM.