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Question about which flowmaster merge to use Car: 02 ss convertible with 1.25” bmr springs/koni shocks exhaust : 1 3/4” pacesetter headers, some random pipe, 3” bullets. Question: what is the size of collectors of pace setter 1 3/4” headers and which size flowmaster y merge do I need to connect between pacesetter headers and fbody spec magnaflow catback. Current exhaust: https://cimg2.ibsrv.net/gimg/ls1tech...bdc88fb61.jpeg |
Usually a Y is defined by the tube sizes feeding it. If you have 3" pipes from the headers, the inlets of the Y will be 3". The outlet of the Y will be whatever size the catback system is. |
Thanks, I updated my question. just trying to figure out what the collectors size is for these particular headers so I know which merge to get. |
I have Pacesetter 1 3/4" headers and 3" ORY and my FM merge is 3" in and 4" out I believe |
Originally Posted by HCI2000SS
(Post 19878863)
I have Pacesetter 1 3/4" headers and 3" ORY and my FM merge is 3" in and 4" out I believe What exhaust do you have after the merge? im pretty sure the catback aftermarket exhausts on fbodies come on 3”. 4” exhaust is used by some high hp cars. Did you have to use a reducer? |
Originally Posted by bad_408_vert
(Post 19879181)
Yeah I’m not seeing a 3” in/ 3” out flowmaster merge. What exhaust do you have after the merge? im pretty sure the catback aftermarket exhausts on fbodies come on 3”. 4” exhaust is used by some high hp cars. Did you have to use a reducer? |
They dont make a 3 in 3 out. Have to pick another like magnaflow or something https://www.summitracing.com/parts/vpe-10360/overview/ https://www.summitracing.com/parts/jex-su6-6/overview/ https://www.summitracing.com/parts/mpe-10798/overview/ |
You will need to buy the 3 inch in 4 inch out merge and also 4 inch to 3 inch reducer and have it welded on to the merge. |
Originally Posted by bad_408_vert
(Post 19878768)
Car: 02 ss convertible with 1.25” bmr springs/koni shocks exhaust : 1 3/4” pacesetter headers, some random pipe, 3” bullets. Question: what is the size of collectors of pace setter 1 3/4” headers and which size flowmaster y merge do I need to connect between pacesetter headers and fbody spec magnaflow catback. Current exhaust: https://cimg2.ibsrv.net/gimg/ls1tech...bdc88fb61.jpeg I would be interested in seeing more pics from different angles |
Originally Posted by 01ssreda4
(Post 19879306)
They dont make a 3 in 3 out. Have to pick another like magnaflow or something https://www.summitracing.com/parts/vpe-10360/overview/ https://www.summitracing.com/parts/jex-su6-6/overview/ https://www.summitracing.com/parts/mpe-10798/overview/
Originally Posted by Sube
(Post 19879640)
You will need to buy the 3 inch in 4 inch out merge and also 4 inch to 3 inch reducer and have it welded on to the merge. |
Originally Posted by bad_408_vert
(Post 19880244)
Thanks! That magnaflow one looks like great alternate. Thanks for info. I’m lowered and worried the 4” part of pipe may bottom out. |
Originally Posted by Full-Force
(Post 19879962)
Im surprised you got those duals inside the stock tunnel brace I would be interested in seeing more pics from different angles The mufflers are 3.5” at that portion. I ll take more pictures when they come off. |
My 99TA had the Mufflex / Flowmaster dual 3 inch merge collector to 4 inch out. It had a 4 inch to 3 inch reducer to hook up to the SLP 3 inch Dual/Dual catback. The merge collector never scrapped over 130,000 miles over15 years. My car was lowered about 1 inch with SLP Eibach springs. On nasty speed bumps the I pipe would scrap. |
👍👍 thanks for info and help guys . ordered the flowmaster 3” to 4” y merge , super 10 muffler , reducer, and dynomax pipes to go from headers into stock location. Gonna miss the dumped duals but need to change for emissions inspection. 😒 |
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