Anyone running no midpipe/open exhaust?

TDIwyse · 11-26-2014, 10:07 AM

It's always a good idea to measure what's really going on.

I'm glad now I decided to stop modifying the exhaust at the point where the SCR was still in place (downpipe and muffler delete being the point I stopped). I've measured a lot of fueling/rpm/gear combo's and haven't seen any overboost issues.

But I am curious on what the SCR pressure differential looks like over flow rates. If you get that data please share.

iaknown · 11-26-2014, 10:16 AM

Quote:

Originally Posted by TDIwyse

It's always a good idea to measure what's really going on.

I'm glad now I decided to stop modifying the exhaust at the point where the SCR was still in place (downpipe and muffler delete being the point I stopped). I've measured a lot of fueling/rpm/gear combo's and haven't seen any overboost issues.

But I am curious on what the SCR pressure differential looks like over flow rates. If you get that data please share.

I am curious as well now. But unfortunately I just pulled my downpipe to reweld it and hacked off the pressure differential lines. Didn't foresee needing them again. Would be great if someone could reach down there and pull one of the lines (and plug coming off the downpipe) and let us know what they are seeing as far as differential goes.

Si-M240i · 11-27-2014, 03:18 AM

To add to my previous post:
Sounds nice, not loud as the DPF and cats are still in place and I have no error codes or issues whatsoever. So all 3 boxes deleted and straight though pipes from car back, works perfectly on my car with my remap.

Puerto Rican 335d · 12-01-2014, 10:44 AM

iaknown i spoke about this OVERBOOSt to lenny but that was a while ago, cant remember what he told me about it, i suggest you contact vinny from Scungilly Racing since he is actually running a 335d in the circuit. give me a call or pm me and I will give you his number ok

11-26-2014, 10:07 AM	#23
TDIwyse Colonel 627 Rep 2,408 Posts Drives: 2011 335d Join Date: Aug 2012 Location: MidWest iTrader: (0)	It's always a good idea to measure what's really going on. I'm glad now I decided to stop modifying the exhaust at the point where the SCR was still in place (downpipe and muffler delete being the point I stopped). I've measured a lot of fueling/rpm/gear combo's and haven't seen any overboost issues. But I am curious on what the SCR pressure differential looks like over flow rates. If you get that data please share. __________________ 2011 335d 11.68 @ 125.71 mph 1/4 mile NHRA certified track Ram Cummins with lots-o-mods
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11-27-2014, 03:18 AM	#25
Si-M240i Major 153 Rep 1,450 Posts Drives: M240i LCI Join Date: Aug 2008 Location: England iTrader: (0)	To add to my previous post: Sounds nice, not loud as the DPF and cats are still in place and I have no error codes or issues whatsoever. So all 3 boxes deleted and straight though pipes from car back, works perfectly on my car with my remap.
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12-01-2014, 10:44 AM	#26
Puerto Rican 335d Brigadier General 236 Rep 3,488 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	iaknown i spoke about this OVERBOOSt to lenny but that was a while ago, cant remember what he told me about it, i suggest you contact vinny from Scungilly Racing since he is actually running a 335d in the circuit. give me a call or pm me and I will give you his number ok __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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