Originally Posted by gbrettin (Post 3848881)

Take the exhaust off and let it eat.

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Originally Posted by gbrettin (Post 3848881)

Take the exhaust off and let it eat.

Sent from my SM-G930P using Tapatalk

Originally Posted by bullitt5897 (Post 3848908)

I said the same thing... was told it’s the final tune going on the car and they weren’t going to waste time just for glory numbers.

Originally Posted by Elmo370z (Post 3848865)

How does visual inspection tell you that the Y pipe is to restrictive, because it’s glowing? Seems like there is a underlying issue somewhere that’s need to be sorted out.

Originally Posted by jwick (Post 3848909)

But isn’t that the fun?

Originally Posted by bullitt5897 (Post 3848916)

A set 2.25” pipes merging to a single 2.5” pipe isn’t a restriction? So 2 pipes with a 4” cross section each for a total of 8” of cross sectional flow merged to a single 2.5” pipe with a 5” cross sectional flow... what do you call that missing 3” of cross sectional flow? How about the 2 90* bends leading up to it?



Simple math points out to it being an issue. Compare it to a true 3” dual exhaust:



2 tubes with a cross section of 7” each for a combined 14” cross section compared to single 5”cross section... hmmm I wonder which would be more free flowing?

Originally Posted by jwick (Post 3848946)

I had the same argument with my fabricator when I went from my Stillen exhaust to my FI exhaust. He had to custom fabricate the connection between FI’s mid-pipe and the turbo 3” DP (single turbo). He kept wanting to neck the 3” down to a single 2.5” pipe and then branch back out to mate to the mid-pipe. Took me awhile to explain to him that he was fabricating a restriction into the system. Finally got him to custom fabricate a 3”to2.5” Y, one 3” inlet and two 2.5” outlets.

Originally Posted by bullitt5897 (Post 3848916)

A set 2.25” pipes merging to a single 2.5” pipe isn’t a restriction? So 2 pipes with a 4” cross section each for a total of 8” of cross sectional flow merged to a single 2.5” pipe with a 5” cross sectional flow... what do you call that missing 3” of cross sectional flow? How about the 2 90* bends leading up to it?

Simple math points out to it being an issue. Compare it to a true 3” dual exhaust:

2 tubes with a cross section of 7” each for a combined 14” cross section compared to single 5”cross section... hmmm I wonder which would be more free flowing?

Originally Posted by Elmo370z (Post 3848959)

Why wasn’t this address before the tune? Common sense would of told them it was going to be a restriction. Thanks for clearing that up.

Originally Posted by Spooler (Post 3848968)

He isn't in charge of it. For some folks it is beauty over function until the beauty don't function. LOL

Originally Posted by solidus (Post 3848974)

All y'all's feelings are gonna be hurt when they show up at Zdays with a 1000whp dyno sheet.....in crayon.

Originally Posted by Spooler (Post 3848968)

He isn't in charge of it. For some folks it is beauty over function until the beauty don't function. LOL

Originally Posted by Spooler (Post 3848977)

Noop, don't wish bad JuJu on anyone. Best of luck to him. I am doing my own thang. If he makes 1000hp, good for him.