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:confused:. 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{thumbup}

Adjust your cam gears...Is your idle high?

cams gears didnt show up yet, no its idling at 850 right now

You can try knocking the timing down in the idle cells. I did that with a buddy's car that had BC 272s and it went from plain-jane idle to beefy cam idle.

Go 280 hks

i dont have my laptop with me but im pretty sure they were around 14, how much can i knock it down?

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.

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.

i have bs 272's.... timing is at 5* and a/f is at 15.4-8 at idle... lope's pretty good

Kelford 272's here. They beat the ground hard. I'm not to sure about hks my buddy has those and they dont lope hard at all.

Im working on my buddies 8 with hks cams and they lope pretty good. Timing is at 5* and idle is set to 962 i believe

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.

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.

I would say on a IX thats pretty spot on but on an 8 hks cams do provide a nice loop. Even BC 272's provided a nice loop on my friends 8.

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.

^^^^^^
^^^^^^
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The HKS 272 is an outdated cam which is generally considered 'mild' compared to the newer cams on the market these days in the same category.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

-