Turbo spooling - mods to hear it better

kenni243 · 04-09-2008, 04:48 PM

If only 1 mod, I'll install the Intake...I think it sound better then the DP, but this just me!

E90Tony · 04-09-2008, 04:56 PM

Will an intake void any part of the warranty? I heard reports that downpipes void the entire powertrain warranty.

bdkevoIX · 04-09-2008, 04:56 PM

Quote:

Originally Posted by Chowbow

+1. A BOV should not be run on the car since it's a closed loop system, running a BOV will actually degrade the performance of the car.

The ECU has already accounted for that air having passed through the MAF. When the BOV releases it into the atmosphere, the car will run rich since it is dumping fuel in to accommodate X amount of air. Except, there's less air now since it's dumped into the atmosphere, so the car will run really rich until the fuel is burned up and the MAF readings actually match what's in the system.

Whether it's a ricer mod or not, whatever... But to me it's a mod that degrades performance for sound which is not useful for me.

You are the one who told me BMW runs on MAF, aren't you?

5soko · 04-09-2008, 04:58 PM

CAI, DP's seem to need a sim to go with it and are hard to uninstall for warranty purposes. CAI, you will get the sound, some performance, and easy install uninstall

bdkevoIX · 04-09-2008, 05:02 PM

Quote:

Originally Posted by DTSociety

Having an aftermarket BOV is a matter of preference and sound.

So is having dual exhaust with only one working muffler.
So is having a set of springs to slam the car.
So is having a huge rpm gauge when your stocker is working perfectly fine.

Last time I checked, aftermarket BOV gives you 0 performance. And its not exactly a cosmetic mod either. Its classified as performance mod.

DTSociety · 04-09-2008, 05:08 PM

Quote:

Originally Posted by Chowbow

+1. A BOV should not be run on the car since it's a closed loop system, running a BOV will actually degrade the performance of the car.

The ECU has already accounted for that air having passed through the MAF. When the BOV releases it into the atmosphere, the car will run rich since it is dumping fuel in to accommodate X amount of air. Except, there's less air now since it's dumped into the atmosphere, so the car will run really rich until the fuel is burned up and the MAF readings actually match what's in the system.

Whether it's a ricer mod or not, whatever... But to me it's a mod that degrades performance for sound which is not useful for me.

dude our cars run on MAP. There is no harm or performance loss whatsoever dumping air into the atmoshere...

DTSociety · 04-09-2008, 05:12 PM

Quote:

Originally Posted by bdkevoIX

So is having dual exhaust with only one working muffler.
So is having a set of springs to slam the car.
So is having a huge rpm gauge when your stocker is working perfectly fine.

Last time I checked, aftermarket BOV gives you 0 performance. And its not exactly a cosmetic mod either. Its classified as performance mod.

you are right. I dont recall it giving you any performance. How do you justify it as being rice. And how do you justify some of these boys calling you a ricer cuz you drive a evo? Just doesnt make sense to me

adrock · 04-09-2008, 05:14 PM

I just installed the HVI Intake and the turbo's are LOUD now. I have a catback and no downpipe.

Chowbow · 04-09-2008, 05:18 PM

Quote:

Originally Posted by bdkevoIX

You are the one who told me BMW runs on MAF, aren't you?

Nope, never been in this discussion.

Quote:

Originally Posted by DTSociety

dude our cars run on MAP. There is no harm or performance loss whatsoever dumping air into the atmoshere...

Cool, I stand corrected.

Chowbow · 04-09-2008, 05:21 PM

Side note... maybe discussed elsewhere but a thought now that I know cars are run on MAP... But are any of you doing any custom programming while using a BOV? Wonder if the tables need to be adjusted?

jbttum3 · 04-09-2008, 05:52 PM

CAI.....I didn't notice anything with the DPs.

BoostedBMW · 04-09-2008, 05:53 PM

Quote:

Originally Posted by Chowbow

Side note... maybe discussed elsewhere but a thought now that I know cars are run on MAP... But are any of you doing any custom programming while using a BOV? Wonder if the tables need to be adjusted?

As far as I know there is no difference in any map for this car based on whether it is running DV's or a VTA BOV, which makes sense because you can run a BOV on an otherwise stock car with no drawback assuming that it is installed correctly.

Also, I can't see how people can see installing forged DV's as being a performance mod, but a VTA BOV that can handle higher boost without leaking as being a rice mod.

I don't really see the difference. If you like the sound of a BOV then go for it, if not then you have other options, but that doesn't mean that one way is right and the other is wrong.

DTSociety · 04-09-2008, 05:55 PM

Quote:

Originally Posted by BoostedBMW

As far as I know there is no difference in any map for this car based on whether it is running DV's or a VTA BOV, which makes sense because you can run a BOV on an otherwise stock car with no drawback assuming that it is installed correctly.

Also, I can't see how people can see installing forged DV's as being a performance mod, but a VTA BOV that can handle higher boost without leaking as being a rice mod.

I don't really see the difference. If you like the sound of a BOV then go for it, if not then you have other options, but that doesn't mean that one way is right and the other is wrong.

+1

Chowbow · 04-09-2008, 06:02 PM

Quote:

Originally Posted by BoostedBMW

As far as I know there is no difference in any map for this car based on whether it is running DV's or a VTA BOV, which makes sense because you can run a BOV on an otherwise stock car with no drawback assuming that it is installed correctly.

Also, I can't see how people can see installing forged DV's as being a performance mod, but a VTA BOV that can handle higher boost without leaking as being a rice mod.

I don't really see the difference. If you like the sound of a BOV then go for it, if not then you have other options, but that doesn't mean that one way is right and the other is wrong.

Agree... on a MAP system, it really doesn't make a difference so it all comes down to whether the sound is worth it to you. I assume they are somewhat expensive because they are for BMWs...

When I asked about the custom tune, I meant the more stuff we end up changing, the less relevant the stock tables in the system are... and the BOV is just another item in the chain.

BoostedBMW · 04-09-2008, 06:07 PM

Quote:

Originally Posted by KenB

remove air box and air filter, cut exhaust off after the turbos and cut a big f'in hole in the passenger side of the fire wall...now there is that non-ricey sound

Will this setup drone at all?

Sal@AUTOcouture · 04-09-2008, 06:12 PM

Quote:

Originally Posted by BoostedBMW

Will this setup drone at all?

more importantly, can I bring it in for service like this?

bullmrkt · 04-09-2008, 06:13 PM

Don't expect it to sound like most modified turbocharged cars, or even a Evo/STI, the turbos just aren't big enough. Definitely can hear MORE of it though.

DTSociety · 04-09-2008, 06:15 PM

Quote:

Originally Posted by AutoCouture

more importantly, can I bring it in for service like this?

How about my warranty??

Alpine335TT · 04-09-2008, 06:22 PM

Quote:

Originally Posted by DTSociety

dude our cars run on MAP. There is no harm or performance loss whatsoever dumping air into the atmoshere...

BINGO

lm1z · 04-09-2008, 06:29 PM

Quote:

Originally Posted by E90Tony

The 335 already comes with a stock recirculated BOV (diverter valve) which diverts air back to the engine. It's a closed loop system and I see no reason to install a custom BOV just for the sound (which I think sounds ricey on the 335s - but different strokes right?). I've also heard a lot of problems with custom BOV's on this car, with no real performance gains (or even a need, due to the size of our turbos).

so true. why can't we give rep on these forums!!

my BMS filter shipped today

can't wait.

ThePrinzeofcatz · 04-09-2008, 06:37 PM

yea dude downpipes really brought out the turbo sound for me, also a tune in some cases may increase the sound due to the increase in the boost level

dhan · 04-09-2008, 06:59 PM

BMS filter ftw. cheap too!

04-09-2008, 04:48 PM	#23
kenni243 Second Lieutenant 8 Rep 286 Posts Drives: 335I Sedan - Black/Black Join Date: Mar 2007 Location: Worcester iTrader: (0)	If only 1 mod, I'll install the Intake...I think it sound better then the DP, but this just me!
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04-09-2008, 04:56 PM	#24
E90Tony Private 18 Rep 63 Posts Drives: E90 335i 6MT Join Date: May 2007 Location: SoCal iTrader: (0)	Will an intake void any part of the warranty? I heard reports that downpipes void the entire powertrain warranty.
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04-09-2008, 04:58 PM	#26
5soko Brigadier General 351 Rep 4,633 Posts Drives: M5 Join Date: Aug 2007 Location: Brooklyn, NY iTrader: (4)	CAI, DP's seem to need a sim to go with it and are hard to uninstall for warranty purposes. CAI, you will get the sound, some performance, and easy install uninstall
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04-09-2008, 05:14 PM	#30
adrock Major 77 Rep 1,217 Posts Drives: 2014 435i Join Date: Oct 2005 Location: SLC iTrader: (3) Garage List 2011 E92 335i [9.58] 2007 E92 335i [0.00]	I just installed the HVI Intake and the turbo's are LOUD now. I have a catback and no downpipe. __________________
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04-09-2008, 05:21 PM	#32
Chowbow pew pew 169 Rep 6,781 Posts Drives: 三三五i Join Date: Aug 2007 Location: CA iTrader: (6) Garage List 2015 BMW 328i wagon [0.00] 2007 BMW 335i sedan [10.00] 1997 BMW 328i track ... [10.00]	Side note... maybe discussed elsewhere but a thought now that I know cars are run on MAP... But are any of you doing any custom programming while using a BOV? Wonder if the tables need to be adjusted? __________________ CSL replicas are now CSL counterfeits. Jesus saves, like Valentine1.
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04-09-2008, 05:52 PM	#33
jbttum3 Captain 28 Rep 620 Posts Drives: 2007 BMW 335i coupe 6MT Join Date: Nov 2007 Location: TEXAS B*TCH!!! iTrader: (3) Garage List 2007 e92 335i [0.00]	CAI.....I didn't notice anything with the DPs. __________________ SOLD!!! :-(Space Gray Metallic - Coral Red - 6MT - Sport - AA Exhaust - UR Catted Coated DP's - Procede V3.1 PnP - Stett CAI - BMW Group SSK - M-Tech Sides/Rear- OEM Aero Lip - GP 8500K Angels - Vorsteiner Boot Lid - Miro M6 Reps
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04-09-2008, 06:13 PM	#39
bullmrkt Lieutenant 24 Rep 464 Posts Drives: 4 wheels Join Date: Feb 2007 Location: usually my desk iTrader: (0)	Don't expect it to sound like most modified turbocharged cars, or even a Evo/STI, the turbos just aren't big enough. Definitely can hear MORE of it though. __________________ 2021 AMG E63S Hammer Wagon 2002 BMW Z8 (with a Dinan DP Engine) 1996 Porsche 911 (993) Turbo 1995 Ferrari F355 Berlinetta 6mt 1964 Porsche 356 C Coupe
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04-09-2008, 06:37 PM	#43
ThePrinzeofcatz Captain 50 Rep 642 Posts Drives: e92 335i MT Join Date: Mar 2007 Location: South Florida iTrader: (3)	yea dude downpipes really brought out the turbo sound for me, also a tune in some cases may increase the sound due to the increase in the boost level __________________ Sleeper...
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04-09-2008, 06:59 PM	#44
dhan Lieutenant 20 Rep 558 Posts Drives: '11 TiAg E92 335i Join Date: Feb 2008 Location: SoCal iTrader: (0)	BMS filter ftw. cheap too!
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