View Single Post
Old 03-29-08, 07:53 PM   #14 (permalink)
GrumpySteelMan
Cure Hunger:Soylent Green
 
GrumpySteelMan's Avatar
 
Join Date: Oct 2007
Location: Greensboro, NC
Posts: 510


Car 1: 2004 Nighthawk RL
Car 2: 2005 Nighthawk TL
Car 3: 2002 525i Sport Wag



iTrader: (0)
Send a message via AIM to GrumpySteelMan
Quote:
Originally Posted by Forevralegend View Post
hmm what im doing is using an afc to tune the airfuel based on the nitrous shot and using a moates 2timer to change my maps at the time of nitrous injection, retarding the maps by 2 degrees. Once i figure out how much fuel needs to be added i can get a custom chip made with those adjustments, am i going about this the wrong way?
I don't think the AFC has any place here. If you're using it to tune the nitrous shot, how are you only using it when the nitrous is activated? Wouldn't you be running nitrous corrected fueling at all times that way? If I misunderstand your setup please clarify.

You certainly need to pull some timing, I usually start with 2 degrees retard and try up to 4. Nitrous in most cases makes more power with a little less timing regardless of the knock threshold. Either way 2 is a good place to be if you don't have more options and time to test.

As far as figuring and getting the custom chip made... Is there any reliable way to translate afc correction factors over to the chip burner? Ideally one would have the chip burned after test runs (with a romulator) on the dyno, but I know this might not be possible. So is the fueling going to be a flip chip also (I don't even know if this is possible for you guys yet)? Otherwise you're no closer to getting it right that route.

As I said, if I missed something, please clarify.
__________________
Quote:
Originally Posted by DA Boy Iggy View Post
Im gonna find the nearest female midget and ask for a back massage via a back walk. No happy ending please.
Grumpy's Guide to Drag Racing at the Strip
Grumpy's 3.5RL Dry Nitrous Install VFAQ (In Progress)
Nitrous'd 3.5RL Running Loose (Video)
NC Meet Video *NEW*
GrumpySteelMan is offline   Reply With Quote