Don't tell the rally boys.

but they're not allowed a diverter valve, and I doubt they run "street" turbos

smstext, a vRS with a TFSi would murder your car round the same roads. and half the torque can keep up regardless of how good you think you are.

Maybe only if the driver had the skills to drive to that ability, the point im trying to make is it doesnt always matter what size engine you have, it how you use it. Police cars are not chipped, its the way they drive it that makes it seem they are chipped. this is my arguement on it. I went past a grandad on a back road today in a fabia vrs, doesnt mean he is gonna murder me cos he hasnt the ability to drive it first and wouldnt as the only time his vrs would go first is if it was stolen or pushed over a cliff.

Maybe only if the driver had the skills to drive to that ability, the point im trying to make is it doesnt always matter what size engine you have, it how you use it. Police cars are not chipped, its the way they drive it that makes it seem they are chipped. this is my arguement on it. I went past a grandad on a back road today in a fabia vrs, doesnt mean he is gonna murder me cos he hasnt the ability to drive it first and wouldnt as the only time his vrs would go first is if it was stolen or pushed over a cliff.

OK, two identically skilled drivers one in the NA FSI the other in a mapped TFSI who is gonna win a race?

...The one with the more power, better suspension and braking setup its quite simple.

OK, two identically skilled drivers one in the NA FSI the other in a mapped TFSI who is gonna win a race?

...The one with the more power, better suspension and braking setup its quite simple.

Place your bets here!

but they're not allowed a diverter valve, and I doubt they run "street" turbos

Who said anything about being allowed DV's. :confused:

I is talking ch*v wastegate chatter, is it hav da boost or is it hav not.

Place your bets here!

I bet the Honda Civic shopping trolley will win.

doesnt mean he is gonna murder me cos he hasnt the ability to drive it first and wouldnt as the only time his vrs would go first is if it was stolen or pushed over a cliff.

So you're some kind of driving god then?

Chris

Who said anything about being allowed DV's. :confused:

I is talking ch*v wastegate chatter, is it hav da boost or is it hav not.

:confused: you implied that "wastegate chatter" was good because rally cars make that "cool" noise, rally cars have so called "wastegate chatter" because they lack a DV - the cool "wastegate chatter" noise is that of compressor surge due to boost passing back tthrough the compressor having hit the closed throttle which will, over time, damage a regular turbo, surely a bad thing?

you can't really transfer anything and everything from a rally car to a street car - given the high frequency things are rebuilt/replaced rally parts are potentially not a particularly clever idea on a road car :eek:

more importantly, who would win the race of kings, sms or mil?

I like wastegate chatter... (as it is known) my octy used to do it alot esp on cold mornings... however the noise i like far more is anti lag..... which is what the next octy will have.... one day.

:iagree:

more importantly, who would win the race of kings, sms or mil?

You boys never stop do you? lol.

I would.

I like wastegate chatter... (as it is known) my octy used to do it alot esp on cold mornings... however the noise i like far more is anti lag..... which is what the next octy will have.... one day.

Umm, I wonder where you can see an Octavia with that on.:rubchin:

:confused: you implied that "wastegate chatter" was good because rally cars make that "cool" noise, rally cars have so called "wastegate chatter" because they lack a DV - the cool "wastegate chatter" noise is that of compressor surge due to boost passing back tthrough the compressor having hit the closed throttle which will, over time, damage a regular turbo, surely a bad thing?

you can't really transfer anything and everything from a rally car to a street car - given the high frequency things are rebuilt/replaced rally parts are potentially not a particularly clever idea on a road car :eek:

more importantly, who would win the race of kings, sms or mil?

Blimey, you got all that from 5 words.

Oh no, no rally car bits, best start taking them off then.

You boys never stop do you? lol.

I would.

that's where my money would be

Blimey, you got all that from 5 words.

yeah.

cant have fun in turbo cars down country roads

i manage alright quaife diff jabba rear arb sideways action

My Roadie comes with wastegates as standard, so they can't be ch*vvy!

They sound great. If they caused harm to the turbo I'd expect MB wouldn't have fitted them.

Edit: Interestingly, when I purchased the car there was very little wastegate noise compared to the standard Roadie (which is very vocal), but upon improving the breathing there is more noise from the wastegates.

N'other Edit: And what's this about turbo'd cars being no fun on a country lane - I've never been in a car that's so much fun on a country lane as this one

Turbo Tech 101[/url]"]

Blow-Off (Bypass) Valves

The Blow-Off valve (BOV) is a pressure relief device on the intake tract to prevent the turbo’s compressor from going into surge. The BOV should be installed between the compressor discharge and the throttle body' date=' preferably downstream of the charge air cooler (if equipped). When the throttle is closed rapidly, the airflow is quickly reduced, causing flow instability and pressure fluctuations. These rapidly cycling pressure fluctuations are the audible evidence of surge. Surge can eventually lead to thrust bearing failure due to the high loads associated with it.

Blow-Off valves use a combination of manifold pressure signal and spring force to detect when the throttle is closed. When the throttle is closed rapidly, the BOV vents boost in the intake tract to atmosphere to relieve the pressure; helping to eliminate the phenomenon of surge.

[b']Wastegates[/b]

On the exhaust side, a Wastegates provides us a means to control the boost pressure of the engine. Some commercial diesel applications do not use a Wastegates at all. This type of system is called a free-floating turbocharger.

However, the vast majority of gasoline performance applications require a Wastegates. There are two (2) configurations of Wastegates, internal or external. Both internal and external Wastegates provide a means to bypass exhaust flow from the turbine wheel. Bypassing this energy (e.g. exhaust flow) reduces the power driving the turbine wheel to match the power required for a given boost level. Similar to the BOV, the Wastegates uses boost pressure and spring force to regulate the flow bypassing the turbine.

Internal Wastegates are built into the turbine housing and consist of a “flapper” valve, crank arm, rod end, and pneumatic actuator. It is important to connect this actuator only to boost pressure; i.e. it is not designed to handle vacuum and as such should not be referenced to an intake manifold.

but what would garrett know about turbo chargers?