04-05-2011, 11:10 AM
Join Date: Mar 2010
Total Cats: 0
I know this I a turbo forum but I'm guessing some of you have phased your projects similarly to me so maybe someone here can help: ECU first, turbo later.
My question: Does anyone have an air:fuel ratio map for an naturally aspirated 1.6L NA? I have a naturally aspirated '91, which will someday get a turbocharger added to it. In the meantime I've installed a Megasquirt PNP ECU.
While his car is turbocharged, Joe Perez gave me an air:fuel ratio map for a naturally aspirated car he that had lying around, presumably this was from his car before the turbo was added. Anyway, while the map seems pretty safe, he admits that it may not be ideal.
I'm using Tuner Studio and VE analyze to tune the volumetric efficiency and was wondering if anyone had a AFR map for a naturally aspirated 1.6L car that they could share?
Why do I ask? Well, the car is just running a little funny and frankly, I don't know what I'm doing. So I'm starting with the one thing I have half an inkling about. I don't actually know that a different AFR table will help. Maybe I'm doing the autotune wrong an the VE table is bad but I can see what I could be fouling up there. Maybe the spark table is off.
So I guess the even bigger question is whether anyone has a primer for tuning a naturally aspirated miata - a step by step set of instructions of what to do and what to look for. Thoughts? I'm here witha stack of bookstand clearly over my head.
'91 SE #3147/4000 (BRG)