Stock Nismo and TT?

ihiryu · 02-20-2018, 10:44 AM

Lol. Well the problem that I have is the sheer fact that 1/2 throttle and WOT feels basically the same in power. Husam is graciously sending over his dumped Y-pipe for me to test, so I can do back to back logs and check the difference.

Jayhovah · 02-20-2018, 11:00 AM

Quote:

Originally Posted by ihiryu

Lol. Well the problem that I have is the sheer fact that 1/2 throttle and WOT feels basically the same in power. Husam is graciously sending over his dumped Y-pipe for me to test, so I can do back to back logs and check the difference.

Sounds good! I am sure you know this, but make sure you get your tune adjusted for the dumped pipe before you start testing... you are going to flow a a lot more air through the system and that won't really be reflected via boost pressure. Good luck and be sure to report your findings!

ihiryu · 02-20-2018, 03:38 PM

Quote:

Originally Posted by Jayhovah

Sounds good! I am sure you know this, but make sure you get your tune adjusted for the dumped pipe before you start testing... you are going to flow a a lot more air through the system and that won't really be reflected via boost pressure. Good luck and be sure to report your findings!

I'm lucky in that respect, since I tune my own cars lol

phunk · 02-20-2018, 04:10 PM

Quote:

Originally Posted by ihiryu

Lol. Well the problem that I have is the sheer fact that 1/2 throttle and WOT feels basically the same in power.

This is normal with forced induction. When you are building boost at part throttle, airflow is already bypassing the throttle plates and building up in the plenum rather than behind the throttles. Regardless if you change the exhaust or not, 6psi part throttle and 6psi full throttle are going to always feel pretty much indistinguishable in engine torque.

phunk · 02-20-2018, 04:16 PM

Quote:

Originally Posted by phunk

This is normal with forced induction. When you are building boost at part throttle, airflow is already bypassing the throttle plates and building up in the plenum rather than behind the throttles. Regardless if you change the exhaust or not, 6psi part throttle and 6psi full throttle are going to always feel pretty much indistinguishable in engine torque.

Although this was written as if the 370z didnt have VVEL. Exclusive to the 370z, there is probably some more power in full throttle versus part throttle due to the VVEL position. That is mostly off topic but couldnt let it slide that I ignored VVEL in my post here talking about throttle plates.

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02-20-2018, 10:44 AM	#1 (permalink)
ihiryu Base Member Join Date: Oct 2016 Location: TX Posts: 141 Drives: 2013 Nismo 370z 6MT Rep Power: 35	Lol. Well the problem that I have is the sheer fact that 1/2 throttle and WOT feels basically the same in power. Husam is graciously sending over his dumped Y-pipe for me to test, so I can do back to back logs and check the difference.