Jay762

Are the fitments not the same just different damping rates?

nightmare - last thing you need when running low on petrol

Wotcha and welcome - are you running standard wheels / tyres and equal sizes all around as it sounds like you could have some torque twisting going on??

yup sounds like the motor spindle didnt fully engage / pull all the way out

that is a very good price for the mileage

It is a lovely example - must admit I don't recognise it from the forum but obviously feel free to browse the gallery and see if someone has posted pics??

lifetime (or ownership of car) guarantee on stainless steel - cant be bad

bargain for someone

Give Ian a ring - his profile says Dorset so just down the road from you

its looking awesome - very understated and really clean - not a single dog hair in sight :)

running rich isnt too bad - picture a bunsen burner with the valve closed, big yellow flame (and possibly some out of the exhaust) versus running lean which is your blue flame that melts pistons

I stand corrected, currently investigating directional airflow sensors to understand just how much of this leakage occurs... There is always the option of mapping the car to run without a MAF but first before any more mods are completed I would be keen to understand and resolve the issue of the boost loss Will you be changing your turbo to the journal type mentioned by Savage if you fit the blank?

also whilst you are checking rule out CV joints by slow driving on full lock fwds and reverse, a cyclic clunking is CV joint gone

Wotcha and welcome- dont know how many are in that colour but I do like it - a lot :)

keep us posted ;)

I would be interested to understand why you were loosing boost with the HKS as they are a quality piece of kit and shouldn't impact performance. Fingers crossed for you Savage looking forward to the results though :)

here is the Wiki info on the subject of flutter etc - it describes compressor stall where pressure escapes past the turbine and also the wear on the turbo itself - MAF (or equivalent) an a relation to over fueling is not mentioned - in my previous post I had omitted the bit about the throttle body and just mentioned revs dropping when clutch was dipped when changing gear )also assuming that a drive by wire throttle and flat foot shifting is not a consideration There is confusion in the automotive world about so called "wastegate chatter" or "turbo flutter". A noise created on lifting off the throttle in a turbocharged car, commonly described as a chipmunk or a rattlesnake, is often stated incorrectly as being a result of the turbo's wastegate closing. The noise is in fact the air compressed by the turbo passing back through the compressor wheel of the turbo after the airflow is abruptly halted by the throttle plate closing, called compressor surge. However, in some cases, i.e. where the blowoff valve/recirculation valve does not open fast enough or is set up to only react to high boost, some chatter will remain. Surge can occur on diesels when the turbo is attempting to pressurize the air at a higher pressure ratio than the compressor wheel can flow at a given speed. Most Diesel engines have no use for a blowoff valve as they do not have a throttle plate. The chatter noise is very noticeable on World Rally Cars, where anti-lag is used. A compressor stall like this can cause excess stress and wear on the turbo's shaft or bearings under higher load applications of the turbo (around 15 pounds per square inch (1 bar) and greater depending on the trim and flow rate of the compressor side). Actual wastegate flutter occurs instead under partial boost conditions such as partial throttle near the boost threshold. It sounds like FftFftFftFft not ShuShuShushu and is caused by the rapid opening and closing of the wastegate at boost levels near the spring pressure. It is commonly heard more clearly and may be more prominent on cars with modified intake silencers, up-pipes, downpipes, or an oversized wastegate incorrectly matched to that specific engine. Also, vehicles using on/off solenoids to control boost can do this under certain conditions. It is not harmful to the engine. Some may claim that it can damage the wastegate, which may be possible under some circumstances, however some vehicles flutter regularly inherently from the factory without any consequence.

The pressure does not flow backwards and forward across the maf as you describe - there is air flow in one direction just more or less dependant on your engine speed sucking air in as long as the engine is rotating at least one cylinder will have valves open and draw air in maintaining the suction, the rotation of the intake turbine is dependant on the exhaust gases rotating the other blades, these gases flow less as you dip the clutch to change gear and revs fall. This in turn slows the speed of the intake turbine, as the revs climb once the gear is engaged and the revs start to rise the turbine is fighting with the previous built up pressure remaining as it has not been expelled via dump valve, gone into a recirc system or gone into a cylinder via the valves. As the exhaust turbine has no pressure on the out let side this is where you get the mismatch in the forces which balance out as the turbo spools up again. The delay in spool up is what gives the lumpy changes Many cars had turbos fitted without dump valves or recirc systems for years and did not eat engines through running rich as an opinion and from an engineering perspective I dont see the point of drilling small holes in plates to fit behind a recirc valve unless they just want to generate the flutter in which case the wear would be to the turbo

venting the pressurised air to atmosphere as you would have being doing using the HKS causes the mixture to run rich due to the loss of air hence the reason for a recirc valve maintaining a closed loop circuit for fuel and air. removing the recirc valve and blanking it off means the circuit will stay intact but will suffer from pressure build ups - this shouldnt affect the fuelling as there is no loss of air or fuel, it will however impact the turbos ability to spool due to back pressure created

it will only affect the turbo as back pressure will be experienced - you will also find your gear changes are not as smooth as the turbo catches up with the change in pressure

Savage has one that may fit but I believe it is a top notch so may be a bit pricey for you given current circumstance??

Wotcha and welcome as mentioned stick up the add and also keep us posted of your progress

Not quite sure I understand what you have done - when fitting the HKS did you remove the standard recirc valve as you only need one or the other?

What an awesome trip - US trip US car - way to go def, very jealous but now you have done all the research just need to copy the itinerary ;) the Elk experience is a nice touch - slightly different to mine where I have woken up on occasion to find the odd moose or horrendi-tremendi-gorilla-pig wandering about the room fortunately not happened for a fair few years now though :P

That is a lovely clean example - good luck with the sale but sorry you have to let it go in first place :(