Question on Exhaust Manifold

**jeanpierre** · April 28th, 2006 09:50 PM

How this part can improve engine performance?Ano ba ang maganda, equal length piping sa manifold o yong unequal length piping? Is it applicable ba sa diesel and gas engines, turbo or NA. Thanks!

**niky** · April 29th, 2006 02:14 AM

It's not advisable to change exhaust manifolds on diesel engines as this adversely affects torque and can have a nasty effect on your emissions.

For NA gas engines, equal length headers (as opposed to stock log manifolds) are best.

For turbo engines, either gas or diesel, stock log manifolds are designed very short to provide lag free turbo response, but aftermarket equal length short headers are available for most common turbo gas engines to provide smoother light up and more power. I don't know if any are available for turbodiesels, but I doubt it.

**jeanpierre** · April 30th, 2006 10:12 PM

Originally Posted by niky

It's not advisable to change exhaust manifolds on diesel engines as this adversely affects torque and can have a nasty effect on your emissions.

For NA gas engines, equal length headers (as opposed to stock log manifolds) are best.

For turbo engines, either gas or diesel, stock log manifolds are designed very short to provide lag free turbo response, but aftermarket equal length short headers are available for most common turbo gas engines to provide smoother light up and more power. I don't know if any are available for turbodiesels, but I doubt it.

niky thanks sa info.

**OTEP** · April 30th, 2006 10:23 PM

It's a fine line. But if you will be running a modded engine with increased air inflow, increased fuel flow, and incresed turbo boost, a better exhaust system can still be beneficial.

U.S. diesel specialist, Bank's http://www.bankspower.com/ offers upgraded exhaust systems for U.S. diesel vehicles along with other neat stuff like bigger intercoolers, reprogrammed chips, etc.