Engine/Transmission (1998.5 - 2002) <300hp? 4" exhaust is a waste of money!

[jlccc]

Originally posted by Mactruck

Now I'm not disagreeing but I think there is a definite restriction of a stock system if you are running a 14 housing. Thats my spin on it.

Yes, you are disagreeing.



And for a 14cm housing you may be correct, but for the stock 12cm housing I think the stock exhaust system is adequate.

 

[Mactruck]

Sorry, I wasn't clear. I agree it may not be needed for a 12/cm housing. But I think it's needed for a 14/cm housing and above.

 

[GDouglas]

I am still mostly stock with only a DDEZ and the stock 3" exhaust with the muffler straight piped. I can get the egt to almost 1200 with the stock 18 lbs. of boost on a long grade, but when I put the boost elbow in that came with my DDEZ, 1000 degrees is all I can get it up to on the same grade. With the elbow my boost goes up to 29 to 30 psi.



Just thought I would share my experience concerning running the boost elbow vs. stock boost. For me it looks like it is worth a 200 degree drop with my combination.

 

[MikeR]

jlccc,



I posted the same thing repetedly in the past for 24v's. I have run my truck up to 410hp and 430hp using the stock 3" exhaust pipe, but with no muffler or resonator. I even had the stock HX35/12 combo. Setting the truck at 320hp and towing 4500lbs I had no egt problems.

I feel the 3" with a free-flowing muffler is perfectly fine for any situation up to 350hp.



-Mike

 

[Mr. Brewski]

come on Mike... 4" looks cool. . And your 5" looks AWESOME! Cant you fit a basketball in that tailpipe?