View Single Post
Old 11-14-2012, 03:05 PM   #13 (permalink)
Mitco39
A True Z Fanatic
 
Mitco39's Avatar
 
Join Date: Aug 2012
Location: Edmonton Alberta Canada
Posts: 2,089
Drives: 40th 370z
Rep Power: 131
Mitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond reputeMitco39 has a reputation beyond repute
Default

Quote:
Originally Posted by DEpointfive0 View Post
I realized that I didn't fully answer your question... Why the loss is low end hp/torque, to be honest, I'm not 100% sure, I can speculate that a freer flowing exhaust gives you a bit of a loss because you're losing back pressure... At the same time, back pressure on a N/A is bull, there is no NEED for it, I bet it's more that the engine works better under stress... (Reason why people put like high pressure coolant caps). On the intakes, it's not 100% the temperature of the air, it's the FLOW that helps... And I'm sorry to anyone that has the HPS or similar intake tubes, they don't do anything, since the accordion is AFTER the MAF, it doesn't help...
Getting back to it, I think the reason you may have more of a power loss or lack of initial power is because the air has to physically move further, so short rams are better for that, but the temperature under the hood is ridiculous! So IMO It's better to have drop ins than short ram. (The stock intake boxes' ducting is actually quite good at getting cooler fresh air...) When you install the Takedas or Stillen G3's you run your piping THROUGH the stock intake box inlets.
Backpressure is used on 2 stroke engines to help keep both the fresh air from exiting the cylinder and to create a scavaging effect to help boost the amount of fresh air in the cylinder.


4 stroke backpressure talk...

Exhaust backpressure the myth - ThumperTalk
__________________
2007 Chevy Duramax - EFILive Tuned By Me
2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me
The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her
My Build --> http://www.the370z.com/members-370z-...39s-build.html
Mitco39 is offline   Reply With Quote