Hey guys,

I installed PTE 1200cc injectors, got them dialed in and did a few pulls. I noticed my AFRs go super rich, particularly from 6000-7500. In the fuel map, I had to set values to 12.0 to see an AFR of 11.0 at 6000+. I can't figure out what can be causing this.

Car is a IX on stock turbo with bolt-ons on 93oct. Compression is good. No boost leaks. LTFT low and mid within 3-4%. Is this something typical of bigger injectors? Your help is greatly appreciated.

 

If you want your fuel map "target" values to match your actual Lambda values you will need to scale the MAF sensor.

I wouldn't worry about it to much though, I personally would be happy with what you are seen, as long as the fuel trims are in check

 

What are your values for size scaling, and what are your latencies?

 

I've gotten it pretty close to being happy with it. Just doing a little more tweaking for idling and cruise which fluctuate between 5-7%, I'm not too concerned because it does drive great, no issues.

 

Increasing the injector scaling, allowed me to lean out the tune without making the values of the fuel map too lean.

 

Any chance I can get you to post your values from my post #3?