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post #1 of 6 Old 05-23-2010, 09:09 PM Thread Starter
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Downpipe question

Does anybody out there have their downpipe go straighht out? No exhaust, strsight pipe, cat or muffler.

Just straight out under the cab?

Just curious about this practice. It sounds beautiful but loud.
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post #2 of 6 Old 05-23-2010, 09:25 PM
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well there are a few issue that pop up with this and it all depends on the owner..

1. cab noise is unreal under load.
2. everything from the dp back will be covered in dust.
3.its not legal and pretty easy to notice.
4.the turbo will be the onlything holding the pipe up and tends to get loose.
5. heats trans up while stopped.

never thought about it with my red truck but my c10 i have "exhaust cutouts" at the headers for when i hit the strip might be a great alternative.

with that said i think im gonna do that where i cut my cat outnow... wow thanks

heres the summit link... http://www.summitracing.com/parts/RRP-Y300REV1/
Im ordering this now ill post a thread when i get it.


oh i might add it says for electric cutouts.... i just welded bolts to it and have wingnuts holding a plate on not takes 5 minutes to take off but cheper and less prone to failure.

97 supercab 4x4: work truck. Reallly Loud stereo (16 speakers, none visable), 20's/35s, 6637, straight piped.
99vette: stock.
89crx, working on a idea that involves a 454 bigblock, 2.5tons, and boggers.
Custom built 12' jon boat: yea its got a 50 horse jet drive.

Last edited by Soot_Life; 05-23-2010 at 09:28 PM.
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post #3 of 6 Old 05-25-2010, 07:05 AM Thread Starter
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Thanks for the reply. Could you tell me more about the hot tranny issue? Thanks
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post #4 of 6 Old 05-25-2010, 08:47 AM
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prolly from the heat comming out of the down pipe. i have a stock down pipe (planning on getting rid of that and going with a 3") and a straight pipe from there all the way out to the back and thats a smidge on the loud side in the cab, have you thought about doing that.
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post #5 of 6 Old 05-28-2010, 10:10 AM
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Quote:
Originally Posted by Babe the blue OX View Post
Thanks for the reply. Could you tell me more about the hot tranny issue? Thanks
The dowmpipe would be blowing all the hot exhaust right next to/on the tranny.

Nick, BPS Historian
1995 F-250 4x4 7.3 Powerstroke
Isspro Gauges, Tony Wildman Tunes, PSGH Stage 1 Injectors, Early 99 Intercooler, ATS Stage 6 E4OD, TCI Tranny Cooler, Snow Water/Meth, Traction Bars, EBPV Brake, TC Lockup Switch, Spray-on Liner, K&N Intake w/ NAPA 6637 Filter, 3" downpipe, 5" mitre stacks.
Waiting to be installed: Electric fuel with A1000 pump and Stealth DIY Dual HPOPs
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post #6 of 6 Old 06-01-2010, 02:11 PM
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I took my truck for a spin like that when I was installing the downpipe. It was loud as heck, and the tranny was hot to the touch.

ISSPRO Engineering Manager

1995 F350 PSD CC DRW, 271k miles
10 ISSPRO Performax™ gauges, Tymar Intake, Gutted EBPV, Tymar 3x4" DP, Tymar 5" exhaust, Cat's lost, Baby Swamps, Swamps tuning, Tricumulator springs and Accumulator Valve, Tru-Cool 4590
1998 S&S 9.5' slide-in camper
33' enclosed tag trailer with 2 drag cars (73 Vega Super-Gas & 74 Vega ET)
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