My New Exhaust - 96 5.7 ECSB

[8716valver]

Thought I'd share my setup with you all.

Been doing a ton of research and based on my financial situation I've put together this setup. Bought the Flowtech headers and y-pipe through advance autos website and saved $50!

Y-pipe back will be 3" to 3.5" oem Duramax tubing and muffler and tip that I had laying around. Should sound pretty good.

Also deleting all the emissions crap with my new BB tune. Will update the thread next week when I install everything.

Flowtech Header w 1-5/8" runners and 3" exit - $183 shipped

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Flowtech 3" Y-pipe - $123 shipped

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Heres the truck

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[Horns]

That will be interesting to hear the Dmax muffler on the 5.7.

 

[8716valver]

That will be interesting to hear the Dmax muffler on the 5.7.

Yeah I figure if it sounds like poop I'll just swap it out for something else or add a resonator.

 

[8716valver]

Anyone know what size the EGR port is on the intake mani?

 

[ChrisAU]

I don't know that, but I do want to see more pics of your truck!

 

[8716valver]

Here it is before the tow mirrors. I'll try and get some high res shots after the exhaust is on.

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[8716valver]

Anyone else know what size the EGR port is?

 

[8716valver]

Well I ended up using a timing plug off one of my vintage jet skis to plug the EGR port. Fits perfect.

 

[8716valver]

Install complete and its a slightly different than what I first planned on doing.

Used the above headers and y-pipe then ran a straight 3" pipe back to a brand new mid 90's chevy diesel muffler, and finally I re-used the stock 2.5" tailpipe. Sounds pretty good but might be a little tinny for my liking. Will post up a sound clip soon.

One thing I'm not too impressed with is the base 87 octane tune from Black Bear. I kept the shift firmness the same but regardless I expected some power increase on the butt dyno. I'm gonna look into getting the truck on a local dyno for some real numbers.

 

[TTS1996]

Will you post some pics of your set up when your all done?