tuning problem please help!!!

[Bruno96]

ok well i desided to switch from a cat to a test pipe and now, i cant seem to figure out why, i am hitting fuel cut but it only hits it once in third gear at 5.5k and then continues to pull hard up to redline. is it posable that 550cc injectors are not enough for 20psi on a b16g with no cat because everything was fine until i took the cat off

 

[JayRolla]

Fuel has nothing to do with fuel cut. You are overruning the maf for some reason and fuel wont fix that. Im guessing that taking the cat out caused better air flow and so now your seeing fuel cut. Since you are a 2g you should beable to boost 20psi no problem. Im guessing a boost leak.

 

[diablos991]

You have a logger right? (or some way to control those larger injectors?)

Post a 3rd gear pull, and that will help us determine your problem.

I would agree with doing a boost leak. Boost leaks are the largest cause of fuel cut and are never a bad idea to perform.

 

[Bruno96]

this is my latest log, i am just starting to tune the new settings so its pritty ugly.

rpm ITA o2
1756 14 .90
2172 16 .88
2572 18 .88
3024 11 .92
3572 9 .94
3888 11 .94
4228 10 .94
4584 9 .96
4932 11 .96
5332 8 .96
5516 7 .96
5888 10 .96
6144 10 .96
6408 11 .96
6632 11 .94
6772 8 .94
6956 10 .92
7124 10 .92
7176 11 .92
7300 11 .92
7424 11 .92

 

[Bruno96]

oh and id did do a boost leak test i have a few small leaks but nothing major held 20psi and took about 2mins to reach zero i think i have a tiny leak coming from my intercooler and my biss screw is leaking but like i said nothing major