Any video on a 135i RissRacing Downpipe?

DEMENTEch · 05-28-2008, 11:31 AM

Quote:

Originally Posted by kompey

have you also O2 sims or no?
any ceck light?
thanks:biggrin::biggrin:

Yep!! I have O2 sims... No check light!!:smile:

darvo · 05-28-2008, 12:20 PM

Quote:

Originally Posted by 135i-CS

Where you did this job?

I think its a Guy from San Loro.......
I might be wrong!
But this is the second work that I've seen from him and he knows what he's doing!

darvo · 05-28-2008, 12:26 PM

Quote:

Originally Posted by DEMENTEch

Here are the Pics. !!

Hope you guys enjoy!

I love the last pic!! You can see its a work straight from the island of high HP "low cost"(modding), Puerto Rico!:thumbup:

Dyno graph and 1/4mile times soon enough!:wink:

PS: Black powder coated exhaust and you're done!!:drinking:

gemini330zhp · 05-28-2008, 12:32 PM

Quote:

Originally Posted by DEMENTEch

Here are the Pics. !!

Hope you guys enjoy!

Wow thats nice is that a 3in Dia Exhaust??

coco_m3 · 05-28-2008, 12:35 PM

sound clip?

sredish · 05-28-2008, 02:01 PM

Quote:

Originally Posted by gemini06m3

Wow thats nice is that a 3in Dia Exhaust??

said its a 3.5"

gemini330zhp · 05-28-2008, 02:03 PM

Quote:

Originally Posted by sredish

said its a 3.5"

Sorry did not read the posts lol ALL I SAW WAS THE BIG EXHAUST!!!! By the way any DYNO NUMBERS???

darvo · 05-28-2008, 02:10 PM

Quote:

Originally Posted by gemini06m3

Sorry did not read the posts lol ALL I SAW WAS THE BIG EXHAUST!!!! By the way any DYNO NUMBERS???

Tomorrow dyno! Friday Dyno graph pic + Video!

sredish · 05-28-2008, 02:12 PM

Quote:

Originally Posted by DEMENTEch

RR Down Pipes W/O Cats , two 3" to one 3.5" Y and two 3.5" Dynomax mufflers.... I use one of the mufflers as a resonator!:wink:

awesome. try that shit in cali... :thumbup: we REALLY need a sound clip so we know just how loud or quiet it is with the 2 dynomax muffs. if you keep the dp's and delete the exhaust from there back, its not going to throw codes right, because all the sensors and such are in the dp's...

btw, anyone know the stock exh. pipe size?

darvo · 05-28-2008, 02:28 PM

LOL

darvo · 05-28-2008, 02:40 PM

Quote:

Originally Posted by sredish

awesome. try that shit in cali... :thumbup: we REALLY need a sound clip so we know just how loud or quiet it is with the 2 dynomax muffs. if you keep the dp's and delete the exhaust from there back, its not going to throw codes right, because all the sensors and such are in the dp's...

btw, anyone know the stock exh. pipe size?

Thats the only think I love of PR besides the beaches.....
You can have a "Offroad(US)" car, as your DD!

DEMENTEch · 05-28-2008, 02:46 PM

Quote:

Originally Posted by darvo

Tomorrow dyno! Friday Dyno graph pic + Video!

:thumbup: I can wait!!

darvo · 05-28-2008, 02:59 PM

Quote:

Originally Posted by DEMENTEch

:thumbup: I can wait!!

Nice try, Biatch!!! LOL

sredish · 05-28-2008, 03:13 PM

Quote:

Originally Posted by darvo

LOL

ahahaha.... I'm retracting all my statements!!!!

sredish · 05-28-2008, 03:14 PM

did you guys build the Y's or were they purchased separately

Quote:

Thats the only think I love of PR besides the beaches.....
You can have a "Offroad(US)" car, as your DD!

You can do that here in rural Texas where I'm at.... but we don't have the nice bitches....

I mean beaches....

135-CS · 05-28-2008, 03:37 PM

Quote:

Originally Posted by sredish

did you guys build the Y's or were they purchased separately

You can do that here in rural Texas where I'm at.... but we don't have the nice bitches....

I mean beaches....

We have both!!!!

sredish · 05-28-2008, 03:46 PM

so any idea on stock pipe size?

darvo · 05-28-2008, 03:51 PM

Quote:

Originally Posted by sredish

so any idea on stock pipe size?

I think they are 2.5" each one....
But in turbo cars, there is a never too BIG!!

darvo · 05-28-2008, 03:53 PM

Quote:

Originally Posted by sredish

ahahaha.... I'm retracting all my statements!!!!

LOL, thats just a sharpie!!
Dont think thats a part # for a Civic!

But its funny!
Sorry, Dementech=

!!! LOL

Citizen Z · 05-29-2008, 01:06 AM

Wait, if he went from 2x 2.5" to a single 3.5" isn't he constricting the system? The area of a circle is calculated pi r^2, which for the original 2x2.5" comes out to about 9.8 in sq (2x [1.25^2]*pi) whereas the single 3.5" pipe yields 9.6 in sq area (1x [1.75^2]*pi). He's definitely saving on weight since the circumference of the 3.5" pipe is 11" vs 15.7" on the 2x2.5" stock pipes. Are the stock pipes really that large though?

I wonder if there aren't flow improvements with the single pipe vs the dual. Less surface area to drag the moving gases but thats a physics problem out of my ken. Pipe with diameter larger than 3.55" will yield a net increase in volume so 3.5" is a little smaller than stock.

Impulse · 05-29-2008, 01:15 AM

after a certain point in the system you don't need as much. 3.5" is more than enough with room to spare

Citizen Z · 05-29-2008, 01:28 AM

The good news is in the weight savings. By going from 2x2.5 to 1x3.5 he removes about 30% of the weight, holding all else constant.

05-28-2008, 12:35 PM	#27
coco_m3 Brigadier General 167 Rep 4,311 Posts Drives: Supercharged E90 M3 Join Date: Mar 2008 Location: SL,UT iTrader: (1) Garage List 2008 BMW M3 [0.00] 2010 BMW E90 335i [0.00]	sound clip? __________________
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05-28-2008, 02:28 PM	#32
darvo Private 2 Rep 63 Posts Drives: Blazer Join Date: Dec 2007 Location: PR iTrader: (1)	LOL
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05-28-2008, 03:46 PM	#39
sredish Private 2 Rep 76 Posts Drives: Join Date: Apr 2008 iTrader: (0)	so any idea on stock pipe size?
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05-29-2008, 01:06 AM	#42
Citizen Z Alpine Master 111 Rep 1,310 Posts Drives: '08 135i AW Sport Join Date: May 2008 Location: Kansas iTrader: (1)	Wait, if he went from 2x 2.5" to a single 3.5" isn't he constricting the system? The area of a circle is calculated pi r^2, which for the original 2x2.5" comes out to about 9.8 in sq (2x [1.25^2]pi) whereas the single 3.5" pipe yields 9.6 in sq area (1x [1.75^2]pi). He's definitely saving on weight since the circumference of the 3.5" pipe is 11" vs 15.7" on the 2x2.5" stock pipes. Are the stock pipes really that large though? I wonder if there aren't flow improvements with the single pipe vs the dual. Less surface area to drag the moving gases but thats a physics problem out of my ken. Pipe with diameter larger than 3.55" will yield a net increase in volume so 3.5" is a little smaller than stock. __________________ Alpine White with Taupe Leather 135i, Sports Package, Heated Seats, Comfort Access, iPod Adapter Fastness: http://www.1addicts.com/forums/showthread.php?t=252727
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05-29-2008, 01:15 AM	#43
Impulse BMW ONE 15 Rep 630 Posts Drives: 93 RX-7 R1, 135i Join Date: Feb 2008 Location: New England iTrader: (3) Garage List 2008 BMW 135i [0.00] 1993 Mazda RX-7 R1 [0.00]	after a certain point in the system you don't need as much. 3.5" is more than enough with room to spare __________________ 135i - Alpine White - Black Leatherette - 6-Speed - Sport Package - Aluminum trim - 6FL
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05-29-2008, 01:28 AM	#44
Citizen Z Alpine Master 111 Rep 1,310 Posts Drives: '08 135i AW Sport Join Date: May 2008 Location: Kansas iTrader: (1)	The good news is in the weight savings. By going from 2x2.5 to 1x3.5 he removes about 30% of the weight, holding all else constant. __________________ Alpine White with Taupe Leather 135i, Sports Package, Heated Seats, Comfort Access, iPod Adapter Fastness: http://www.1addicts.com/forums/showthread.php?t=252727
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