So basically about 1.5 years ago I wanted to know how much improvement a Tri-Y header would make on my car. So using the good OLD search function I found some data that answered my question.

My basic criteria was as follows:
11:1~12:1 compression ratio
1.8ltr
Horsepower numbers between 175~200
BEFORE AND AFTER DYNO RESULTS

A few things you'll notice.
The real deal headers SMSP and Hytech had better torque numbers. Even there curves showed stronger power bands over the entire rpm range.

The clones however seemed to make more top end power.

What I concluded for myself is as follows.

New SMSP header, 8hp
My DC Sports header is crap and all those I study are better, 3hp
A new full 2.5" exhaust, 5hp
So my hope is to gain 8-16hp to give me between 190-198whp on a dynojet.
More recently I have targeted trying to break 140tq, I am at 132tq now.

The first page is the summary and the following pages represent the data I used.

 

Damn Thats some good data...Hytech rep ftw!

 

Damn good tests . .

for great info

 

Some pictures of my SMSP header waiting to be installed.

https://honda-tech.com/forums/acura-integra-6/picked-up-my-smsp-header-more-power-soon-2629961/

 

props to someone that want to search before asking.

 

dam my adobe reader wont let me open lol wanted to c how you preformed the test

 

Get an update.


Not actual testing. Just data collection and analysis.
Ideally, I would have liked to the get actual data from the graphs into Excel and study it at various rpm points. This would have given me the average increases across the rpm band for these set-ups. Then I would have put that average data with my torque curve. This would have given me my projected out come. Once I get mine dyno'd I would have compared the two and could see how close I got.
I was not able to do all that and I just looked at the peak HP and TQ.

It seems like nobody on this site uses WINPEP7 much.

 

yea i was at work thats why i couldnt open it but can now .. how much time did u put into collecting all the info you where lookin for and simular builds to yours that u can compare with ? it alot of work but worth it in the long end when buying a 1500 dollar header ... wanna make sure you gettin what u paid for

 

Keep in mind I did the searching before the H-T Site was updated. I used the old search function. It was easier to use than the new one.
I searched for SMSP, Hytech, Tri-Y, Clones, Copies. Then under each one of these lists I read all the posts looking for similar builds and dyno graphs. It did take a while, a few evenings 1-2 hrs a night.