Im running a tvs1900 at 8.5psi on a 2011 sierra 5.3. Right now i have the injectors that came with the maggie installed. But i have some ls9 injectors sitting here. Ive already spent a good deal on the MAF table to get my fueling right. But someone pointed out to me that maggie generally fudges the ifr table to achieve afr. Im told the stock maggie injectors are 42#, and the tune seems right for that. Should i go ahead and drop in the ls9 injectors with data from a zr1 tune? Or will i be back at square one on my tune? Also, on a side note, ive noticed my ls9 injectors do not have the filter screens in the top. Is that normal? Or should i get some replacement injector filters?