neuspeed p-flow fuel trims

[clockwise33]

have not logged any fuel system values except trims. what else should i look at other than afr? I do have a APR HPFP and new OEM LPFP as well. also had carbon cleaning done and injectors looked fine. I see many people have the issue with the high fuel trims and p-flo. I have no driveability issues. the stock maf housing is oval 2x3 which equals the area of a 2.5" diameter circle. I want to buy the revo intake because it reduces the pipe to this size at the maf housing http://www.revotechnik.com/product-details/air-filter-intake-kits/20-tfsi-air-intake-system I do not have a stock intake because the neuspeed came with the car. I would have never bought that intake...btw I also have a boost gauge and show no vac or boost problems. and here is another thread i found with neuspeed p-flo fuel trims...http://www.golfmkv.com/forums/archive/index.php/t-175249.html

I have a hard time believing that there is any real difference between any of these established "filter on stick" intakes. pflo, bsh, evoms, cts, vf, etc, all use the same basic shape, same diameter pipe and similar size and shape filter. There are lots of threads that contain accounts of these intakes running great. Here is a pretty comprehensive thread on the topic from a Golf R forum. http://forums.vwvortex.com/showthread.php?5860772-Aftermarket-Intakes-and-Fuel-Trim-Issues

As long as you're running fine with no driveability issues I would say let it be. The ECU can compensate for up to 25% greater or less than expected AFR so you are still within that range.

 

[larcic]

I know I should let be but I'm kinda picky that way about my car...the revo intake that I posted is slightly different than a filter on a stick. It reduces in diameter to stock spec at the maf housing(speeds up the air with the funnel effect) and i've seen that thread but there are so many threads and nothing conclusive on any whatsoever...

 

[clockwise33]

Switching to NGK (94460) PFR8S8EG spark plugs solved my high rpm hesitation with the P-flo / APR K04 combo. Just got back from logging some pulls and going from stock intake to P-flo picked up 10g/s Maf, increased boost 2 psi at top end, and lambda spec vs current is spot on. Fuel trims w/ P-flo after 400 miles are -1 idle +7 partial. Most importantly, switching to the P-flo brought down my high rpm waste gate duty cycle to 70%-80%. Previously the waste gate was 99% past about 5500rpm, indicating that the turbo was struggling to pull air through the stock intake. The car feels really dialed in now.

 

[larcic]

so i tried my luck and switched to a aem dry filter and took the car for a drive. 10 miles later trims are down to 7.8% thank you internet!