Nissan 370Z Forum - View Single Post - What do we know about the z1 lower intake manifold?

Mysilverz · 03-04-2016, 07:26 PM

I got your hint. I honestly think it's the part. So I still have the ported Z1 lower manifold on. I have a friend in Birmingham who was selling his Z1 ported upper plenum. So for the hell of it we swapped from the stock one I'm running now to his Z1 plenum. It gained 2whp. The procedure was the same. We reset the ecu and did two runs with the Z1 ported lower and the stock upper plenum. The car made 303whp. Then we swapped to the ported Z1 upper, reset the ecu, let the car warm up to normal operational temperature and did two more runs. Final number was 305whp. So read into that what you want. I'm speaking with someone at Z1 now. As soon as I swap back to the OEM lower manifold I'm going to do another run and ask for a refund in some way from Z1. I can't seem to get back to my previous numbers since I put their parts on.

03-04-2016, 07:26 PM	#73 (permalink)
Mysilverz Base Member Join Date: Jun 2015 Location: Birminham Al Posts: 205 Drives: 2013 370z silver M6 Rep Power: 10	I got your hint. I honestly think it's the part. So I still have the ported Z1 lower manifold on. I have a friend in Birmingham who was selling his Z1 ported upper plenum. So for the hell of it we swapped from the stock one I'm running now to his Z1 plenum. It gained 2whp. The procedure was the same. We reset the ecu and did two runs with the Z1 ported lower and the stock upper plenum. The car made 303whp. Then we swapped to the ported Z1 upper, reset the ecu, let the car warm up to normal operational temperature and did two more runs. Final number was 305whp. So read into that what you want. I'm speaking with someone at Z1 now. As soon as I swap back to the OEM lower manifold I'm going to do another run and ask for a refund in some way from Z1. I can't seem to get back to my previous numbers since I put their parts on.