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Moderator: MalcolmV8
so what did this set up cost ?Soul wrote:I basically went this route as I couldn't beat the price for the setup I wanted. By time I got a new dist, intake, TB, and wiring harness they were cheaper or as much for used stuff.
I was hoping I could eventually tune the ecu same as a mustang, glad you know of some ppl doing this alrdy C-Grey. Do they just use a mustang strat/bin whatever or is there something more complicated involved?
I couldn't say for sure. I run EGR on my setup and I continue to run it while in MFA mode. However one of the things I learned is I had to reduce the EGR flow by about 1/2 to keep the engine from bucking and surging while running lean. I originally expected I'd need to increase EGR flow to hold down the lean-burn high temps, but found that just wasn't possible. Running about 1/2 the EGR flow seems to work just fine though. I'm able to run lean in the 1.10 lambda range. For those unfamiliar, you multiply the lambda value by your fuel's AFR to get the number in AFR-terms. So for 100% gasoline, which is what most people are familiar with, that's up around 15.95:1 (14.64 x 1.09). Now it doesn't run dead-on that. It fluctuates all over or at least the Wideband's feedback fluctuates all over. The range is usually between 1.06-1.12...with occasional spikes as high as 1.20. But once the AFRs go much over 1.15, you begin to feel the leanout and the loss of power. And from all the charts I've been able to find on the Internet, your fuel economy benefits of lean-burn start to reverse around 1.10. So staying near that lambda mix should yield the best possible fuel economy while cruising.Chris wrote:To activate MFA mode and run lean in open loop would you need to open EGR to cool the cylinder and prevent detonation? Therefore if you have no EGR system you wouldn't be able to take advantage of the increased economy?