Quote:
Originally Posted by smoked240
I actually converted to MAP when I went AEM. Thanks for the info, this is what I've been doin when I take it out but due to the cold it's a bitch to get running on E85.
For simplicity I'll stick with E85 until I go to my tuner. I would stay E85 but it's starting to disappear in my area and the highest we have is 91 sadly.
I also have a aem wideband tied in but the gauge bounces all over until I'm holding steady boost about 5psi and higher.
|
e85 starts fine in winter, you need to adjust the additional cranking fuel table and the after start fuel table for that though. Most tuners dont because it is a pain to adjust (you need a cold engine for that ... ) If you have trouble starting, crank it just a little, stop for a couple seconds, then try again (and if needed, a 3rd time). It should do the trick.
Unless you run lean most of the time, fueling is not going to be a problem, the car may lose a bit of power and have bad mileage but i would not worry about it.
Your main problem is going to be timing, and that is going to either make holes in your pistons and/or make your turbo glow bright red, even at partial throttle, even with AFR set correctly. Using 91 with an engine mapped for e85 will make holes. Using e85 with an engine mapped for 91 will make a glowing turbo, basically. (and it will really run like crap, if it even starts). Both are very bad.
MAP as well as MAF compute the mass airflow and acts accordingly, it takes different sensors for that but the way it works is quite similar.
The AFR really should not be all over the place if it was not before considering your mods. You might have a leak at your exhaust (or you had when it was mapped and you don't anymore)