Hi guys,

Started a new thread because we had been talking about this in someone else thread and didn't want to jack it, LOL

So long story is Car made of power but the AF's were in the 13's and 12's ending at 12.3 high?
There was also a dip in power at 6k the AF spikes to 12.5 ?
There is a pretty big gap in power favoring the stock map run @5k to 6k ? And power falls off hard on my tune while stock map builds all the way till 7300. The stock map is making more all the way though?
Cars I compared are below, Same dyno same day temps ECT, Was one year exactly from runs.

2011 G37X Coupe , 7SPD auto, Stock MAP-- 19 Inch wheels

Takeda Intakes, HFC’s Exoctic speed Cat back, Stock Manifold
WHP 295 , 229 WTRQ AF’s ending 11.4 and as the af falls make power ?


2009 G37X Sedan ,UPREV Tune-20 inch wheels

HFC’s Exoctic speed Cat back,M370 Intake manifold, Stock boxes with cold air mod, Pipe feeding the stock boxes.

WHP 285 , 230 WTRQ AF’s ending 12.3 big spike in AF at 6k power =power dip and power falls off.

Thoughts guys, WHY the stock map made more WHP and looks smother? WTRQ is the same tho ? Stock map has better AF's ending at 11.3 ? I have no clue how to tune but just using at what I'm looking at. Dark red and Dark blue on the overlay are my newest run 11.2.14 even the WTRQ has a pretty big dip in it?

 

I have been told by a very reputable tuner that our motors love about a 12.8 afr. My car had the same torque dip but on the stock tune that was corrected with my ecutek tune. Maybe shoot for a 12.8 afr throughout the rpm range and see if that helps. Maybe a failing fuel pump? Just an FYI, my torque dip came at the same rpm as well could be timing related.

 

Hey thanx man , I wouldn't even know how to look for the pump failing , but I have seen more than I hand full of dynos with AF's around 11.3-11.6 making 300 WHP and 250's WTRQ. Even look at my AF's on ky stock run there running down to 11.4 and making power till redline and 300 WHP?