EFI tuners?

art leong · 12-07-2012, 09:20 AM

I'm thinking of changing my fuel map axis from manifold air pressure and rpm's, to throttle position and rpm's. I have a very choppy map signal at lower rpm's due to the individual throttle bodies and the cam overlap. My map signal jumps back and forth from 70 kpa's to 80 kpa's at idle (1100 rpm's) with the throttle position sensor at 0. This seems to be causing fueling nightmares.
Going down the track at wide open the map reading stays steady at 99 kpa's.
What are the advantages and disadvantages of switching?
There is a 4D and 5D function but at this time I don't think I'm advanced enough to use them.

12-07-2012, 09:20 AM	#1
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	EFI tuners? I'm thinking of changing my fuel map axis from manifold air pressure and rpm's, to throttle position and rpm's. I have a very choppy map signal at lower rpm's due to the individual throttle bodies and the cam overlap. My map signal jumps back and forth from 70 kpa's to 80 kpa's at idle (1100 rpm's) with the throttle position sensor at 0. This seems to be causing fueling nightmares. Going down the track at wide open the map reading stays steady at 99 kpa's. What are the advantages and disadvantages of switching? There is a 4D and 5D function but at this time I don't think I'm advanced enough to use them. __________________ Art Leong 2095 SS Last edited by art leong; 12-07-2012 at 09:40 AM.