Is this possible? - Boost Forum

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Is this possible?
Thursday, June 24, 2010 4:19 PM
Or has this been done? Its not exactly a revolutionary idea but when I looked it up the typical responce is 'why put it in if your not going to use it?'
I would love to see cars with a similar plan to it as a sort of 'ultimate sleeper'. You might think I'm either totally stupid or nuts for this, but i was wondering if it is possible to shut off a turbo. REASONS WHY ASIDE, is this safe for your car if it has two settings? My friend and I were discussing sleeper cars (Generally unassuming appearance despite a s**t-ton of power.) and it was noted that one way to tell if its a sleeper is the noise (Reminds me of an airplane, really. I hate it.).

So I was wondering if it was possible to actually shut off a turbo by cutting off the exhaust flow to it. I saw these electric cut-off exhaust valves on the internet and wondered if they could do the trick. I think it would have to come in two settings and a button inside the car so you can toggle between stock settings and turbo settings.
You would still need to do other mods to other parts to support a turbo but I would assume they can run under stock settings just fine, if not better. I might be wrong though.

Ok, general idea is that if your on setting 1 (stock) the cut off valves to one side (the turbo side) and revert to just regular stock flow - along with stock engine tunings (or better, I guess it doesn't really matter for stock.). Setting 2 cuts off the pipe on the stock side so you get all your exhaust possible to the turbo, along with tuning yadda yadda yadda.

example diagram:



What would be additional mods that needed to be done or hazards that come with doing this? From my understanding having a turbo decreases MPG and shortens an engines life.




Re: Is this possible?
Thursday, June 24, 2010 5:27 PM
it's possible, not really worth the work though... the main issues would be tuning



LE61T PTE6262 Powered

Re: Is this possible?
Thursday, June 24, 2010 5:59 PM
why would you do that





Re: Is this possible?
Thursday, June 24, 2010 6:06 PM
edit: I read your post.

a turbo will be quiet if you redirct the bov and wg into the intake and exhaust respectively. the reason so many turbo cars are so loud is because many people vent to atmo on the bov and on the wastegate.

at idle and cruise, a turbo car sounds just like any other.. and in fact, when hooked up quiet style (not venting to atmo) external observers would be hard pressed to tell the difference.

this is a silly idea and ultimately, does nothing but overcomplicate a system that already functions properly AND will function quietly if designed properly.

besides, by the time people can hear your car enough to tell its turbo, its usually too late.








Re: Is this possible?
Thursday, June 24, 2010 9:07 PM
agreed with above mine is boosted but sounds stock, like stated above, until my bov pops off or the wg open dumps. but at idle and cruise it sounds stock as can be and is a total sleeper.

and if tuned properly, boosted cars can get better mpg and not wear and tear any more than being stock.



Re: Is this possible?
Friday, June 25, 2010 5:29 AM
The one thing I am looking forward to is hearing the open dump and BOV...I can't wait, couldn't imagine hiding the thing I love most about turboed cars.



Re: Is this possible?
Friday, June 25, 2010 10:37 AM
Matthew Jollymore wrote:The one thing I am looking forward to is hearing the open dump and BOV...I can't wait, couldn't imagine hiding the thing I love most about turboed cars.

Farting and Sneezing is sexy.




I have no signiture
Re: Is this possible?
Friday, June 25, 2010 1:05 PM
Open dump with an unrestrictive muffler to baffle it a bit ftw.

I drive through traffic, cruise along, etc... my bov rarely goes off and the wastegate barely has to open. Why? Because I sized my turbo so it doesn't come on until later in the powerband - where I WANT it. If it was the size of an SRT-4's turbo then sure... there's no hiding it.

If you size the turbo right and drive the car normally, nobody will ever know or suspect that you have a turbocharger. It simply doesn't make any noise - the idea is to stay away from the boost threshold.

It is so much fun to pace somebody through traffic, let them rev and pull ahead and show off how much noise their car makes beside you while you just cruise along calmly.... and then just when they are getting bored of trying to taunt you, you put your foot down for 4-6 seconds and the turbo spools up like an 18 wheeler and you let off and the BOV goes off and you drop back beside them to see a look of incredulity.

Total win.

No need for your idea - just size everything right and drive nicely and you'll have all the stealth you want.

-Chris-



-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Re: Is this possible?
Friday, June 25, 2010 4:13 PM
I vote best boost forum post ever.



Re: Is this possible?
Friday, June 25, 2010 4:34 PM
Yeah, my car sounds completely stock (besides the exhaust). Just upgraded to a Super 60 yesterday and that thing makes no noise at cruising. You really have to floor it at 2500revs for there to be any sign of a turbo.





"You can only feed them semen for so long before their legs fall off."




Re: Is this possible?
Friday, June 25, 2010 7:36 PM
Yea, maybe it was just my experience with turbos. All my buddies with turbos in their cars wanted them to sound as super obnoxious as possible and I HATE driving in their cars cause everyone turns their heads and looks like I'm some ricer nuisance. If there is a better option for no wear-and-tear along with better-than to same MPG thats less complicated I will probably jump all over that.

OH. I was also worried over the fact for automatic cars. typically you see turbo sets for 'manuels only' or whatever because turbo's will destroy an automatic car only.
I'm still waiting on my back-ordered B&M shiftplus (I hope that wasn't a waste of money, LULZ.) and maybe that solves the issue of a turbocharged automatic car being worn a lot sooner.

I'm not a drag racer, but I wanted an option to be able to scoot past traffic quickly and blow down highways with my lead foot.
And test my mechanical skillz, I suppose.

Hopefully this topic covered the 'can I turn off turbo?' discussion maybe are asking.....lol!




Re: Is this possible?
Friday, June 25, 2010 8:06 PM
Turbos love automatics. The extra load on the engine helps spool through shifts.




I have no signiture
Re: Is this possible?
Friday, June 25, 2010 8:21 PM
Kira Smith wrote:Yea, maybe it was just my experience with turbos. All my buddies with turbos in their cars wanted them to sound as super obnoxious as possible and I HATE driving in their cars cause everyone turns their heads and looks like I'm some ricer nuisance. If there is a better option for no wear-and-tear along with better-than to same MPG thats less complicated I will probably jump all over that.

OH. I was also worried over the fact for automatic cars. typically you see turbo sets for 'manuels only' or whatever because turbo's will destroy an automatic car only.
I'm still waiting on my back-ordered B&M shiftplus (I hope that wasn't a waste of money, LULZ.) and maybe that solves the issue of a turbocharged automatic car being worn a lot sooner.

I'm not a drag racer, but I wanted an option to be able to scoot past traffic quickly and blow down highways with my lead foot.
And test my mechanical skillz, I suppose.

Hopefully this topic covered the 'can I turn off turbo?' discussion maybe are asking.....lol!



Didnt know chevy made these for people named Manuel only.... hahaha





"You can only feed them semen for so long before their legs fall off."




Re: Is this possible?
Saturday, June 26, 2010 10:38 PM
Kira Smith wrote:
OH. I was also worried over the fact for automatic cars. typically you see turbo sets for 'manuels only' or whatever because turbo's will destroy an automatic car only.




from what i understand, that's generally because manual cars have smaller transmissions. smaller transmission means easier routing of exhaust and charge pipes. easier routing means less expense. less expense equals more profit.


as said above, autos are great for a turbo application, as the added load put on the engine helps spool, but also because (and this is the better part of the deal) you don't ever have to take your foot off the gas to shift.



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Re: Is this possible?
Sunday, June 27, 2010 6:45 AM
Sorry I have almost always been able to tell a J is turbo by listening to it at idle. The exhaust note does slightly change. Reminds me of a turbo DSM.



FU Tuning



Re: Is this possible?
Monday, June 28, 2010 4:57 AM
sounds deeper due to the muffling effect of a turbo. Also can a burble effect.

To quiet the turbo down
- have your wg recirculate into the exhaust
-have a recirculating bov

Also it would be very hard to do the proposed setup you have shown. It looks like the turbos would be mounted somewhere in the underneath middle of the car. That could create quite a clearance issue and if you didn't clear it would be quite costly as well.

I would just do a normal turbo setup and do the two above suggestions. You should be fine with that.




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