Which Basemap for High Compression B20 vtec?

ninezeroteg · Post by **ninezeroteg** » Tue Nov 24, 2009 1:40 pm

I installed an RMF (replica) narrow header over the weekend, and feel like a re-tune is in order to get the max out of it. Since I'm going to re-tune, I figure I should start the tune from scratch and see what I can do. Which basemap should I start with? I used the P72 before, not sure if that was as close to what I need as I can get. Here's the setup: Fully Balanced B20B RS Machines 12.5:1 CR pistons (Type R replica) (actual compression is probably over 13:1 after block decking and head resurface x2) Stock B17 head w/ GSR cams Skunk2 Pro IM 330cc injectors @ stock fuel pressure RMF narrow replica full 2.5\" exhaust

thething96 · Post by **thething96** » Tue Nov 24, 2009 4:49 pm

On a side note, you might need bigger injectors for that setup. I had a 12:1 compression gs-r with 330cc injectors, and those suckers were maxed out. Looks like your setup might call for more fuel....

ninezeroteg · Post by **ninezeroteg** » Wed Nov 25, 2009 12:18 am

I've had it running with close to this setup for over 10k miles (the major change is the header), and haven't run out of injectors yet. I am thinking about changing them out for the RDX 410cc's or possibly the injector dynamics 725cc's to see if I can get some more consistent AFR's though. Any other recommendations for injectors for this setup welcome.