will performance exhuast over rev the turbo?

[iracemine]

are you talking to me. im just putting a simple explanation of how a turbo diesel works completely differently to a turbo car. Also im in hawaii brah we don't have red necks doing this stuff. the shop that runs all of this stuff is asc certified first of all second of all knows all of his equipment has all kinds of facts of what needs to be done if exhaust and chips and other stuff is put on. factory sends those bully dog chips with presets that is safe for the diesel. what you think they gonna send it so you can blow their turbo yah good one. just a bigger exhaust fry the turbo no don't think so. i have more frenz here with trucks that has been using their trucks as meer toys if it breaks it breaks merely cuz they have rich mom's and dads and it is their play toys. you have no idea of what kind of 4 wheel drive terrain we have here. oh yea is the ms3 automatic no. i said a exhaust break and didn't involve your torque converter simply cuz its not an automatic. like i said earlier your senstive ass red neck trucker can just chill the hell out and mind your buisness it has nothing to do with you and your trucks. it was a mere explanation on how a diesels are irrelavant to ms3 motor. also why don't you mention the dodge i posted about also?:flip:

damn brah, whos sensitive.

 

[justa4banger]

I find this thread hilarious............ We explain to GSRTYPE1 that the turbo can't over rev, and he ignores the comments and still goes on with his life........

YES a CAT BACK exhaust............ Wait...........NO a Turbo back exhaust will blow the motor sky high. You need to make sure you go buy one right now.
(jerkit)


hey make sure to get the flux capcitor calibrated for your CAI and driver weight............. It could blow the turbo up. Oh and don't forget the muffler bearings need a get coat of lube, Forgetting to do that, wil DEFINETLY blow the turbo up.

 

[knowledge007]

lmao 4banger...my sentiments exactly

 

[zoom-zoomhatch]

if u run vta then yes it make a bunch of unecessary noise...i cant imagine a company like hks making a bloff off valve that wouldnt improve over a PLASTIC bypass valve....these stock valves are made cheap for mass production which makes them easier to break. every one will do what they want of course but i think upgrading this is good because it releases mroe air sicne. i am running it recirc like many other guys on here..do what u want and believe what u want..end of the day its ur car and ur money

HKS developes a BOV and make money off the said BOV because people want a big shiny thing that goes whoosh and looks cooler than the plastic piece, that and cars that are not turbo stock that people have to buy an aftermarket BOV cause there wasn't one there in the first place. I have a HKS and it's sitting on my dresser uninstalled and for sell cause I had more problems with it leaking and not sealing right than I do my stock one for now at least. Has anyone actually broken a stock one? I for one haven't heard of this as of yet, and if anyone knows a way to see if one flows more air than the other one, I'de be willing to try just to see cause I'm sure the stocker flows perfectly fine.

 

[knowledge007]

Don't understand why you had a problem with the HKS leaking. Maybe the valve was not sitting snug in its flange???

I do not have any problem what so ever and even thining of changing to vta for a while. Just to get some kicks and then of course go back to recirc.

 

[Kosh]

If you are worried here is what you can do. Sell your car and go NA. Then you won't have to worry about turbo going bad EVER!

After reading 5 pages of people posting 'you will not blow your turbo by reducing back-pressure' you are still convinced of what a turbo diesel mechanic says then there is no changing your opinion.

 

[gsrtype1]

thats like saying it stupid to worry about over reving your engine, go out and rev your engine to 25,000 rpm's if you are worried that it will hurt then sell you car you dumb ass ...lol

 

[knowledge007]

what???

 

[gsrtype1]

thanks for the reply, i but my friend who cut off his muffler said his boost spkies

I just wanted to clarify a few things here and then I'll leave you guys alone

Blow off valves, like Capt Crunch was saying, aren't going to keep you from overspinning your turbo. In fact, they're purpose is exactly the opposite: They keep the turbo spinning between shifts. Moreover, a blow off valve only operates when you close the throttle, and since overboosting is only going to occur when you're under throttle, a BOV won't be of any help. A BOV is meant to release pressure in the intake tract when you close the throttle plate to shift.

Some cars have problems with boost creep because the wastegate isn't large enough. Since the exhaust is what spins the turbine, the wastegate is there to divert exhaust gas and keep the turbine from overspinning. Eventually you reach a point where you're flowing so much exhaust volume that the wastegate can't divert enough of it, and the turbine speed increases uncontrollably. We haven't reached that point yet, and we probably never will since this turbo is pretty much tapped as it sits. So this is really a non-issue for the SPEED3/6/CX7 guys with stock turbos.

Combine this with the fact that we've seen literally hundreds of SPEED3/6 cars running turboback exhaust systems (including ours and our competitor's products), some with no mufflers or cats, and I have not heard of any complaints about overboosting. So the short answer is "no," you really don't have to worry about making too much boost or destroying your turbo with exhaust modifications.


Jordan

thanks , what about my buddy who cut off his muffler and he sais his boost goes to 21 psi and then back down is that over boostin?

 

[Kosh]

thats like saying it stupid to worry about over reving your engine, go out and rev your engine to 25,000 rpm's if you are worried that it will hurt then sell you car you dumb ass ...lol

I have read that 20+ times and it still doesn't make sence to me.

It is known that over reving your engine is bad for it. What we have been trying to tell you is that just reducing back pressure will not kill your turbo.

The association I was trying to make is if you are worried about your turbo going bad then maybe you shouldn't drive one. If you want piece of mind go with something NA, less imaginary things to go wrong.

 

[Capt Crunch]

Don't understand why you had a problem with the HKS leaking. Maybe the valve was not sitting snug in its flange???

You may not see it leak, but many BOVs inherently do even with a perfect install, HKS included. The wastegate can compensate, but it runs the turbo harder to achieve the same PSI. This can push the turbo out of it's efficiency range and blow hot air, decreasing performance. The only way to check is via a pressure test.

The BOV with the best reputation in the Subaru community is Tial. HKS has been shown to leak. Don't even think about Go Fast Bits (GFB).

 

[knowledge007]

Well I haven't done a test on the hks with a pressure gauge but I am almost certain that this ssq is not leaking. As a matter of fact I'm thinking of vta for a whille and getting some of that cool whistling...

 

[gsrtype1]

sorry for calling you a dumb ass, im just saying there is people on this thread who

I have read that 20+ times and it still doesn't make sence to me.

It is known that over reving your engine is bad for it. What we have been trying to tell you is that just reducing back pressure will not kill your turbo.

The association I was trying to make is if you are worried about your turbo going bad then maybe you shouldn't drive one. If you want piece of mind go with something NA, less imaginary things to go wrong.

there are people on the thread who say it will over rev the turbo and give an explanation and people who say it wont and give an explanation, awnser this is spiking to 21psi overeving the trubo , if it isnt than why not? ... thnaks for a response

 

[gsrtype1]

that will awsnswer my question once and for all . is boost spikeing to 21psi overspinning the turbo? please give a mechanical reason why its not, not just a no awnser. thanks

 

[clos561]

no..these types of turbos are used on vw's too and i know a guy with gti that spikes at mid 20's...just make sure u cool it enough before u turn the motor off...even tho it is water/oil cooled at high psi the heat gets "out of ordinary" and needs a bit more time to cool off... i dont think u can "over rev" a turbo because a certain type of turbo can only produce X amount of psi if u let it...thats y high boost requires turbos the size of my head...if u worry about "over rev" upgrade ur blow off valve and that will reduce the amount of air that could "over rev" ur stock turbo

 

[gsrtype1]

makes sense, that guy that worked at the muffler shop said hes seen the turbo housing go out do to overeving the turbo with no muffler. but people say stuff and that could just be bs or peoples turbos might have worn out for someother reason and they blamed it on that with know real founded evidense.

 

[clos561]

makes sense, that guy that worked at the muffler shop said hes seen the turbo housing go out do to overeving the turbo with no muffler. but people say stuff and that could just be bs or peoples turbos might have worn out for someother reason and they blamed it on that with know real founded evidense.

a guy on here with ms6 was puffin white smoke from his exhaust..he supposedly messed the seal up on the turbo or some s***...maybe he was running high boost too often at the track... not letting it cool down between sprints could have been the problem...if he reads this i hope he can correct m e if im wrong

 

[gsrtype1]

i always let my turbo cool off i never just puul in and shut the engine off

 

[clos561]

i always let my turbo cool off i never just puul in and shut the engine off

ok...(shrug)

 

[FRUCTOSE]

Yes you can over work a turbo but most of the time it's past it's efficiancy range for a long period of time and it will not last long. I did it with my t25 on my dsm and what hurt the turbo the most is when it was pushing max efficiancy and then some. I could actually hear the turbo go past it's efficiancy range and blow the hot air. Plus the car bogged and ran like crap. Because at that point it's just building up heat and destroying the oil seals. Another turbo killer is compresor surge, which is when the bov doesn't open enough and stops the turbine instantly. sounds like tss..tss..tss..tss

As far as the tbe making the turbo go out fast, not in 10 or 20 thousand like your diesel mechanic's turbos!! Your buddy with the 21psi ms3 must have something else wrong for it to do that. The boost may creep a bit more but not enogh to destroy the turbo fast, the life may go down a bit but who cares, you gotta pay to play.