I ran [email protected] with the older version on an aggressive 93 pump tune. The newest version has the UHF turbine wheel so it should flow a little better. I recommend the following supporting mods...Thanks 240Z I appreciate you saving me many hours of research, I’ve read most of your posts so I know your advice is legit. Much appreciated.
This has been reported although I and other local GTR guys had zero issues with them. Xona is produced by FP so I assume they are the same manufacturer as the turbos on your car since Cicio uses Xona.Only issue with the greens is they are notorious for leaking seals. I’ve seen multiple sets leak on install.
Ideally you want 3.5" at that power level, but just run what you have for now. Regarding my comments on MAF, you can buy a SD kit that requires you to turn off several DTC's so if you have OBD II inspection that will have to be converted back to MAF to pass. If you don't want to go SD then you can purchase a set of recalibrated MAF sensors that will allow you to support 800+hp in a 3" tube. My buddy local is running them and on Xona Greens at 20psi he is only hitting ~4.0volts.How funny I literally have ordered almost all those parts over the last few days as well as Cobb AP and Visconti Flex-fuel kit (as well as their twin pumps, hardwire kit, and 1300x2 injectors) The only thing is my mid pipe is 3" and my cat back is from a NISMO model (Car came with Nismo seats and exhaust from a late model Nismo GT-R) Do you think I should upgrade the cat back?
Also, I figured upgrading the intakes to 3" would suffice for the MAF or are you saying I need to upgrade the actual MAF's and scaling for the larger 3" intake won't be enough? I plan to stay around 700-800 whp.
Impressive results and you should consider upgrading your cams when building the shortblock. I'm in the process of doing the same and went with GSC S2's/springs/retainers for the stock unported heads.