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Aftermarket Cams and idle ignition timing
Hey guys,
I want to clarify something. I'm running nismo knockoff cams and I've been forced to raise my idle to about 850RPM at idle in D and it's around 1000RPM in P. If I leave the idle at 650 RPM in P which is stock, the car shakes like crazy and timing fluctuates between 7-20*.
As of now, my ignition timing is at 6* in P with the idle at 1000 RPM. I know the ECU will adjust timing to get the idle down but I wanted to know how much of an effect directly or indirectly( idle adjustments) a big valve overlap has on ignition timing on our cars. Has anyone been able to retain the 15* advance at idle with bigger cams?
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Mods:| Cammed VQ35 | SSIM | HR springs | ARP rod bolts | OEM Nissan rwd head-gaskets | Budget Y-pipe and Catback | NWP Spacers | Dynomax Superturbo muffler | EdgeRacing Converter | Transgo Reprogramming Kit | Hayden Transmission Cooler | JWT Pop Charger | Emanage Ultimate | SSV4 | Innovate LC-1 WB | DR mod | ES motor mounts | ES x-member bushings | ES LCA bushings | Polyfilled tranny mount| 15" RX-7 BBS wheels (12lbs/rim) | Street tuned: 13.0 AFR, 7200 Rev limit, advanced timing |
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