3.5 exhaust

[Archive]

After all of my mods I think my next step is to move to the 3. 5 exhaust. Should I really expect a change in my truck besides EGT's being a little cooler? I was just curious as to what I should expect with this upgrade... really not sure what to expect.
thanks
cody

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91 4x4, 5 speed, 3. 54 gears, pw injectors, 12cm turbo housing, K&N air filter, "tweaked" pump, isspro boost and pyro gagues w/A pillar mount, straight piped 3' exhaust

 

[Archive]

Let me jump in and wait for the experts with you Cody. This is something I've been wanting to do also.

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'93 W250, LE, CC, 4x4, 5spd. , Cummins, K&N, 16cm turbo, Power Wagon injectors, Professionaly rebuilt and calibrated pump, straight exhaust, Lund visor w/lights, 5th wheel, Gooseneck, H. D. rear hitch, Aluminum everything. My Rigs

 

[Archive]

I can't speak for the difference between a 3" straight piped system and a 3 1/2" system but I gained 2 lbs of boost going from a stock 3" w/muffler to a 3 1/2" BD system.
If each pound of boost is 10hp then I gained some, it does sound much better.
Caleb

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1993 LE W250 4x4 CC,Auto,3. 5's,Limited slip. Diamondplate,K&N,Egt,Boost,trans temp VDO Vision series, BD 3 1/2" Exhaust, 16cm housing,Mag Hytec Diff+ Trans pans,Transgo TFOD shift kit,Roadmaster Active Suspension.

 

[Archive]

Here is a post on the subject https://www.turbodieselregister.com/ubb//Forum2/HTML/000596.html
Apparently Joe D. has done some dyno testing and there isn't a difference from 3" to 3 1/2" in performance, just price.

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90 W250, 5-speed, isspro gauges, 16 cm2, K&N, Borgeson shaft, JRE 3" exhaust

 

[Archive]

5" stacks! 5" stacks!!! 3psi! 3psi!
#ad
ed

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• '93 250 LE 4x4 5spd 4:10 Pwr win/loc/mir,cruise,dual 5" chrome stacks,12cm² turbo,PW injectors,K&N,pyro/boost,US Gear E-Brake,Fuller Roadranger shifter, diamond plate tool box, CB, 16x10" AR rims, 285/75/16 Bf goodrich, . "wirenut_21529" on Yahoo Messenger
• '96 Ford B-Series school bus (5. 9 Cummins!)I'm gonna Bomb it!
• '94 GMC 2500 6. 5L Turbo

PICTURES.

 

[Archive]

I agree 100% with Wirenut, however I can only say 5" stack. When I put on the stack and my 16cm housing, I picked up 5 lbs. and EGT is cool all of the time. 500-600 depending on speed on the highway. 800 under full throttle, I only gotten it up to 950 with probably about a 14,000 lb load

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'93 D350 2wd Club Cab 5-speed,141,000 miles,K&N,Amsoil throughout,Borgeson Steering Shaft,Isspro gauges(Tach,EGT,Boost,Engine Oil Temp. ),16cm Turbo Housing, "My Dream Exhaust"(5" Chrome Stack)