My car is Running Pigg **** Rich

i need some help

I've put 1000cc Injectors in scaled them like 665 and then looked at the wideband.... 9.00

i scaled to 680 same........ 800 same ...750 same ..........700 same.... 710 same....

it gets rich as hell at 3 k

 

I'm assuming this is in closed loop..

Look at your fuel trims, if their pinned then you have to work on both the voltage latency and injector size values..

In the open loop maps, if your fueling is unmodified from stock, then you'll see it get as rich as 9.0..

Your goal at first is to get idle and part throttle trims to be acceptable to be comfortably drivable. Then you can focus on the maps which will have to be altered regardless...

I have 1000cc injectors, and found I was able to pretty easily scale the injectors...

Try this as a starting point

636 for injector size
1.008 for 14v Voltage Latency (don't forget to bump the 11 and 16v values a little also)

This should get you "close" where you can do some driving.. If you cannot get your trims to be within 10% at idle, then you may be overruning your FPR with your fuel pump..
(also, you need to explain what mods you have on the car, since there are a few that can alter the stock MAF curve significantly enough that scaling is affected too)

 

Also, what is your MAF frequency at Idle, and at cruise?? Knowing this will help tune the injectors..

voltage latency will help higher RPM, get the injector scaled correctly at idle, then use the voltage latency to adjust it for your cruise.. Idle will end up a little rich, so you lower the scale slightly, and repeat until the curve is similar to the stock injectors..

I have a blowthrough MAF on my car, therefore my MAF curve is more linear than a stock MAF, so I use voltage latency to compensate the curve.... so my numbers are really a reference only, since I did get a good idle with that..

 

Could you explain what voltage latency actualy does? Perhaps in your other thread of common questions?

 

i didnt touch the MAF Frequency..