I have been trying to scale these PTE 880s and I can not get the LTFT low to cycle. The mid cycles all day long at cruise, but when I let it sit and idle, it just wont cycle. Should I use the prephierys to disable closed loop to get the dang things to cycle..? Any suggestions would be greatly apperciated..

 

The problem is your hard intake pipe won't let the car idle in the correct MAF Hz area for theLTFT Low to adjust. Your injen hard intake is screwing the MAF Hz reading. You will have to put on the stock rubber intake to get the MAF Hz to read like idle (38Hz). Once you do this your LTFT Low will adjust. You can then scale your injectors to get them to +/- 5 % which is abour ideal. Then put on your Injen intake and scale the MAF to read the same 38Hz at idle.

I did this same method for my AMS 780s and HKS suction. My LTFTs are +/- 2% all the time now. STFT stays +/- 8% all the time too.