I have 4 780cc injectors, An S4 streetport, a TO4E hybrid, and the old Greddy FMIC.

I was tuning the other day with an LM-1, since I installed the FMIC. My engine is sucking gas like mad, at 8 psi I'm already in the 9.00s on the fuel map. The fuel curve in boost goes up at a 60 degree angle. When I installed the FMIC I had to add a ton of fuel at each boost level.

I know the readings are accurate, because even though I added some fuel at the boost levels, they were lean. I have a new sensor and new plugs (brand spanking new).

 

Here is my load map.

http://homepages.wmich.edu/~m1goebel/loadmap.jpg

 

Wow, dude you should reallly change those Ms values above 16psi in case it over boosts one day!!

unless you MEAN to have them that low? can't see why though?

 

It would be pointless, if I was already maxing my injectors at 12, at 16 it wouldn't matter much.

I've since upped my fuel pressure, and it made a huge difference. I had to take out a 3rd of the fuel, just by upping it from 38 static to 45 psi. Either that or this LM-1 isn't reading well. I don't trust this wideband though.

 

720's will not get you too far at all, you really need some 1200's or 1600's in the secondarys

dale

 

Mike...I've got some 1600's brand new still in plastic, if you want to try them.

 

They are 780s, not much difference than 720s though. I'm only running a hybrid turbo. If I was going to go bigger I'd get some bigger injectors. Everything seems fine now.