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How do my AFR's look?

7.7K views 19 replies 8 participants last post by  IQRaceworks  
#1 ·
I recently put a set of 380cc injectors in my 03' R53. It was running rich at WOT (like expected), so I sent my DME off to WMW to have their quick tune flash done to make it run better with the 380cc injectors. After getting the DME back and running another AFR log, this is what I got. Shouldn't it be running around 11.0-11.5 at WOT......or do much canned tunes run them this rich on purpose?

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#7 · (Edited)
I'm starting to wish I would have just left the car where was....200hp jcw tune and 330cc injectors. It was running right around 11.5-11.8 at WOT. Now with the 380cc injectors and the WMW tune it's running down around 10.5 at WOT. After all that money spent...the car really doesn't feel any faster...if anyone, maybe a little slower when the pedal is mashed. :sad:

Here are my AFR's at WOT in 3rd gear starting at 3000rpms and running up to 6500. This was BEFORE the 380cc injectors and Quick Tune flash.

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#17 ·
Way Motor Works (WMW) is pretty well known.....their Quick Tune flash was a cheap option ($255) to get my car good with the 380cc injectors. It's not a bad tune, its just a little on the rich side.....but for a canned tune I guess that's better than being lean. I was just surprised that my AFRs didn't change much, and that was the whole reason for getting a flash setup for the 380cc injectors.....because with the stock tune it was too rich. Well, its just as rich with the quick tune. Although, it does feel like its a little more peppy on the low end and mid range.