Is my MAF on its way out?

[SuperAvant]

I was doing some logging today and I noticed that the most my MAF was flowing at WOT was 253 g/s. According to Ross-Tech's website, this value should be about 80% of your horsepower roughly which would equate to 303 HP. Im pretty sure Im a bit more than that at the crank so what gives? Also, my fuel trims lamda percentages are all above 1 at WOT - right around 1.6.

[jfunkey]

WEll that is going to depend on what gear your in... To a point I mean you still pulling in 4.2 leaters of air but sometimes the air box gets a better charge and you get better resolution in 3rd gear... Also check your air filter.. I think 280 is about where most cars sit. Depending on mods you can get more but you also have to see if the APR tune is doing something with the MAF sig.. These cars have lots of Electric stops in them..

so 250 sounds low

[SuperAvant]

WEll that is going to depend on what gear your in... To a point I mean you still pulling in 4.2 leaters of air but sometimes the air box gets a better charge and you get better resolution in 3rd gear... Also check your air filter.. I think 280 is about where most cars sit. Depending on mods you can get more but you also have to see if the APR tune is doing something with the MAF sig.. These cars have lots of Electric stops in them..

so 250 sounds low

Cool... I need to get rid of this tune. I believe I actually was in 3rd when I did the full throttle run. The mods I have are in my sig. Is there any way to verify that the tune is screwing with the MAF?

[blkonblkS4]

Not without looking at the tune. You could always have someone that is stock take some logs and see what they get. Beside if you really want to take advantage of all that header power you are leaving on the table then you need the JHM tune. All of that increased air is probably being wasted with your current tune.