Spark Plugs-Map Vacuum Pressure-S-AFCII Mapping Q's

[PazzaAE86]

Hi guys,

My ITB setup is coming on but my current plugs are looking a bit worse for wear these days and im going to get some new ones. I'll be buying NGK-R ones and at the moment im using the "6" heat range... Should i try 7's since i'll be runing ITB's and have an altered fuel map?

Secondly, my S-AFCII is controlling fuel and it has the ability to read the vacuum pressure from the Map Signal.. Now it runs at about 450-60 mmHG or 60 kPa (roughly) when its idling. Does anyone know what a stock AE86's vac pressure will be at idle? Just want to see how far off a stock, fully working vacuum i am with my current vacuum setup. I think at the moment my vacuum setup is better than its ever been so im hoping its good.

Third, S-AFCII mapping.. I know every engine is differant and no 2 maps are the same but does anyone have a basic map they can post up here? The Ne-Points and the Low and High Correction factors? My Engine is an AE92 Big Port with 40mm ITB's and a 4-1 Trust Manifold and Exhaust. Also, what percentage do you use for your "Hi" and "Low" throttle posisitions?

Thanks guys!

Paz