Favorite Headers
Originally Posted by 2scoot
If anyone doubts what TPiS said about the 1 3/4" headers, then read the latest copy of Engine Masters. The top dog was making way over 600 HP with some beat up, dented up 1 3/4" headers.
Staging Lane
Joined: Mar 2005
Posts: 57
Likes: 0
From: midland, tx
i have TPIS and will stand by them 100%. they were a breeze to install. put the car on a lift and pulled it back off in 2 hours. finish on them is excellent, AIR tubes lined up perfect. for the price, i would never change. even if lg's make more power, can you justify spending that much more money? nothing against lg, or any other maker for that matter, i am just stating the extreme luck i had putting my TPIS on!
Staging Lane
Joined: Mar 2005
Posts: 57
Likes: 0
From: midland, tx
Originally Posted by M6HuggerSS
would a stock cube blown (500-550rwhp) car benifit from the 1 7/8''?
Originally Posted by chandlerc5
i have TPIS and will stand by them 100%. they were a breeze to install. put the car on a lift and pulled it back off in 2 hours. finish on them is excellent, AIR tubes lined up perfect. for the price, i would never change. even if lg's make more power, can you justify spending that much more money? nothing against lg, or any other maker for that matter, i am just stating the extreme luck i had putting my TPIS on!
But the Vette community still pays for them.........I did! But do the TPIS headers come with an X-pipe, or do you have to buy one after you get there headers? Most Vette headers come with the X-pipe, but I just wanted to throw that out there. 
Teching In
Joined: Aug 2005
Posts: 16
Likes: 0
From: Washington, MI
Originally Posted by TPiS
Our TPIS headers have been tested against the LG long tubes by a GM engineer and we out performed the LG's by 7 to 10 hp. I have made over 660 hp NA on our dyno on pump 93 octane with our header. Our's header was the first on the market for the C5. You will find that a 1 3/4 header with the proper collector and h-pipe will outperform a 1 7/8 set every time.
Myron Cottrell pres TPIS
Myron Cottrell pres TPIS
. The LG was up 20 ft.lbs around 3000 rpm or so. 
Tenured Member
Joined: Jan 2002
Posts: 169
Likes: 0
From: MN
Originally Posted by magredZ51
Correct me if i'm wrong, but if I recall the test correctly the TPIS header did not make more power than the LG's til around 8000 rpm . The LG was up 20 ft.lbs around 3000 rpm or so.
. The LG was up 20 ft.lbs around 3000 rpm or so.
