Exhaust experts/engine experts - I need your valuable inputs here

[sunny]

hello,
I had left over 2.5 inch pipe so I made this straight pipe slipon(second image below)

two questions -
1. tell me pros and cons of straight pipe vs the werkes like slipon i made few months ago

2. how long should I cut the straight pipe I built today?

BIGGEST POSSIBLE HEADERS ON ROCKET 2500CC

Nice work, Sunny. My understanding is that Richard isn't currently focussing too much time on headers, but that doesn't mean that he won't do. ....He's a busy man. My understanding is that Paul Bryant is developing some big bore headers and matching tail end......Anyone wanting bigger headers...

www.r3owners.net

 

[DesertRat]

You have to run the numbers;
Header Tube Length Calculator

Ball-Parking the header length will only waste time and material.

You also have to understand the interaction of EGT, A/F Mixture Profiles in the Tune, and Cam Overlap/ Profiles to correctly match the Exhaust for optimum engine performance.