Yoda's Master wrote: ↑

Sun Jun 27, 2021 7:48 pm

It's a shame they won't sell it. I gave up asking them to sell me a set.

seymore4 wrote: ↑

Tue Aug 03, 2021 8:36 am

Thanks for doing the legwork! Now I just gotta find time to put them on.

I had them make me the full exhaust too, apparently it's only the second copy out there

trayday wrote: ↑

Sat Aug 07, 2021 10:07 am

I have my headers in the garage, just need to put on. Obviously I didn't buy the exhaust lol

You think it'd be beneficial for the 5.6L to use 2.75" exhaust vs the 2.5?

ken in az wrote: ↑

Sat Aug 07, 2021 11:09 am

trayday wrote: ↑

Sat Aug 07, 2021 10:07 am

I have my headers in the garage, just need to put on. Obviously I didn't buy the exhaust lol

You think it'd be beneficial for the 5.6L to use 2.75" exhaust vs the 2.5?

I thought about that but based on what I've read and seen testing on dual 2.5" is good for 500hp. So I think it's good for NA.

trayday wrote: ↑

Sat Aug 07, 2021 3:19 pm

ken in az wrote: ↑

Sat Aug 07, 2021 11:09 am

I thought about that but based on what I've read and seen testing on dual 2.5" is good for 500hp. So I think it's good for NA.

Have you seen testing with 2.75"?

The 5.7 Tundra, people are gaining 48whp/89wtq with 3" duals and long tubes. The aftermarket Tundra exhaust manifold, where it mates to the head is the same size as PPE for our cars.

seymore4 wrote: ↑

Fri Aug 13, 2021 5:11 pm

Got it most of the way buttoned up today. Got sent the wrong O2 extensions so waiting on those.. also the HPS intake that was supposed to be here today is arriving Monday now... then there's the power steering pressure sensor that I broke off jacking the engine back and forth

seymore4 wrote: ↑

Tue Aug 17, 2021 4:47 pm

All back together and running good! At idle you almost can't tell its got full exhaust but definitely turns heads when you get on it. Noticeably faster as well, I punched it from a stop and spun straight through first and second. Just need to fix the tune now...

trayday wrote: ↑

Sat Aug 07, 2021 10:07 am

I have my headers in the garage, just need to put on. Obviously I didn't buy the exhaust lol

You think it'd be beneficial for the 5.6L to use 2.75" exhaust vs the 2.5?

Yoda's Master wrote: ↑

Wed Aug 25, 2021 12:29 am

I have and they blew me off

armybrat wrote: ↑

Mon Aug 23, 2021 7:58 pm

trayday wrote: ↑

Sat Aug 07, 2021 10:07 am

I have my headers in the garage, just need to put on. Obviously I didn't buy the exhaust lol

You think it'd be beneficial for the 5.6L to use 2.75" exhaust vs the 2.5?

Since Ken mentioned the Scat Pack in his video...just for comparison, that car uses a 2-3/4" dual exhaust stock from the factory that is sized and tuned for 485 hp performance with room to grow. The M56, well we know that exhaust is sized for 420 hp luxury not performance. Just installing the headers and 2-1/2" X-pipe opened up the flow quite a bit and made room to grow. That with the HPS hoses and tune you're at Scat Pack stock performance. Ken's M56 is probably at the maximum hp for a stock engine so the 2-1/2" exhaust sizing is good enough IMHO. If you go further and build the engine then a larger exhaust diameter should be considered.

seymore4 wrote: ↑

Sun Aug 29, 2021 7:20 am

It would be fun to see a stock/ before dyno run, then a run with just headers, then a run with the headers and full exhaust.