Hey everyone,

I just recently installed Z1 HFC's on my 2008 G35x and now my car has a hesitation/bog around 2500-3000 RPM after 3000 the car takes off and goes on its business.

Is there any way to fix this issue or does this need to be tuned out?

Thanks

Do you have a wideband or Uprev so you can monitor / log what your AFR's are? I have to say any changes will need tuning. I just changed my 05' to a 3" cold air intake and had to change fueling 30% down low. Little changes can make a big difference in the tune.

it’s strange it’s only in 4th gear between 2-3000 RPMs part throttle if I floor it or keep in a lower gear it’s fine.

I think it will need a tune, which is already in the works haha...

the transmission seems to be in working order and holds fine and no engine lights or anything so it’s looking like it needs a tune

Bump

Well, did tuning happen?

It did, but problem still persists