Hi all, 

 

ive got a 2004 fabia VRS with S2000 filter and Decat/straight through system. I bought the car standard and had the car a couple of weeks .. when the car comes on boost, it does whoosh quite loudly however when I come off the throttle to change gear around 1500-2000rpm there is some serious wastegate chatter, very noticeable ... is this normal? Or could something be faulty? Never heard of derv turbos flutter unless it's the VKLR ball bearing variety etc

 

thankyou 

 

EDIT: it's only around that RPM, it's as the car begins to load up under boost and lift off it chatters for probably 2 seconds 

Edited 6 June, 20179 yr by JaamesVRS

For the final time, it doesn't have a bloody wastegate, it's a VNT, it's a turbodiesel, STOP thinking petrol turbo thoughts. Forget everything you thought you knew about petrol engine tuning, it DOES NOT apply to a diesel.

 

Which is why the exhaust and filter won't make a blind bit of difference.

I'm not asking how to make chatter happen in the slightest...

 

im asking WHY my car flutters/chatters quite loudly between 1.5-2k rpm I want to know if it's normal or not. It sounds identical to wastegate chatter, it's a stereotypical zutututu sound 

Sounds like this, yet goes on for longer and is more pronounced 

 

This is the exact same sound, if it's normal then great, no issues however I'm new to the TDI world and want to know if it's an issue or not 

 

Only thing I can think is the air returning back to the turbo, however I didn't know if this is normal for these engines/turbos

 

Edited 6 June, 20179 yr by JaamesVRS

It's just the actuator slamming the VNT wide open when the boost peaks to prevent overboost and overspeeding, you can just hear it much more clearly now that you're not using the silenced standard exhaust and airbox.

 

I understand that you don't know what's going on but you're all over this like a rash right from the get-go, at no point have you asked us what steps to take as you tune your VRS, you've just dived right in with a load of pointless petrol mods which don't do anything for this car. Either you do know what you're doing or you don't, there's no middle ground.

 

Turbo death is signified by siren wailing under full boost, faint at first then getting louder until, BANG!, everything else is normal. Ok.

At the minute I'm doing all the mods I personally want to do, rather they gain performance or not. I know the exhaust makes naff all difference but it's like an addiction, I've never left any of my cars standard and probably never will, Mrs cars get the same treatment.. when it comes to getting other parts for the car I will certainly ask for advice to get the best out of it. I also do a lot of google searching before creating a thread, regardless of it being on this forum or another, if I don't find the answer I'm looking for then I make a thread. 

 

The S2000 filter I read about online, the standard exhaust system had seen better days, flexi was well and truely past it's sell by date, back box was pretty rough and for what I paid for the exhaust system killed two birds with one stone, personally I like the sound of a tractor on boost hence why I didn't buy a standard replacement, some call it chavvy. The same with added chrome trim, silly mud flaps etc I despise it however some people love it, it's all preference but like I said when it comes to other mods which I'll be doing in the future etc I will certainly be asking for advice. E.g what front mount, EGR delete yes or no, Decent place for a map which people recommend, what coilovers etc etc

 

I'm honestly not looking to get in an argument with you or cause s*** I'm simply making sure that the noise is normal and not a premature sign of turbo failure, however you have now cleared this up for me and I can continue with not thinking in the back of my mind I need to shell out on a new turbo soon.

 

everyone has more knowledge on certain things than others, on the race car there isn't anything I don't know about it, I've had the car 3 years and had them previous to that, everything on the car has been upgraded for purpose and the cars goes unbelievably well for its weight/power/purpose. I've never owned a diesel ever, always been an N/A petrol man. ITBS etc etc so all this forced induction and oil burner stuff is all new and a new learning curve for myself, don't shoot the noob we've all been here once 

52 minutes ago, JaamesVRS said:

everyone has more knowledge on certain things than others, on the race car there isn't anything I don't know about it, I've had the car 3 years and had them previous to that, everything on the car has been upgraded for purpose and the cars goes unbelievably well for its weight/power/purpose. I've never owned a diesel ever, always been an N/A petrol man. ITBS etc etc so all this forced induction and oil burner stuff is all new and a new learning curve for myself, don't shoot the noob we've all been here once 

 

Never say there's nothing you don't know about something, I know how to get a N/A TU5J4 to make 239 BHP on super unleaded but there's way more I don't know 

7 hours ago, sepulchrave said:

 

Never say there's nothing you don't know about something, I know how to get a N/A TU5J4 to make 239 BHP on super unleaded but there's way more I don't know 

 

More of a metaphorical thing mate, I know them cars and engines off the back of my hand is what I mean 

 

these TDIs however.... different story haha

Edited 7 June, 20179 yr by JaamesVRS

 Don't take sepulchraves replies to heart, I don't when talking about 2-EHN and 2 stroke oil - how long will his reply take? I'm actually suprised that he doesn't reply with caps lock on.

 

Edited 7 June, 20179 yr by KeithCheetham

11 minutes ago, KeithCheetham said:

 Don't take sepulchraves replies to heart, I don't when talking about 2-EHN and 2 stroke oil - how long will his reply take? I'm actually suprised that he doesn't reply with caps lock on.

 

 

All I can hear when you start is like: "nnnf eijojdx fujuvqevo ujqouvo 2-EHN", it's weird because you use sciency sounding words but no science comes out...

Relax fellas,  

 

Dont make me fetch the naughty step

9 hours ago, Graffiti said:

Relax fellas,  

 

Dont make me fetch the naughty step

 

You relax, humour isn't naughty.

8 minutes ago, sepulchrave said:

 

You relax, humour isn't naughty.

 

 You tell him Sepulchrave, it's just banter which is great even in technical issues. By the way 2-EHN http://www.oilem.com/what-is-the-best-cetane-booster/ 2-EHN.

12 hours ago, sepulchrave said:

 

You relax, humour isn't naughty.

 

Oh it can be 

 

( closes door quickly and runs )

This thread is beginning to turn rapey

4 hours ago, JaamesVRS said:

This thread is beginning to turn rapey

 

Nah,  it's all cool . Good reading.

 

However, i was thinking about your thread earlier,  I had an apollo sealed induction kit and removed it for a Ramair set up.  The apollo gave a deep note but the ramair gives the noise you explain.

 

I love the noise and sep explained why it makes said noise well, however performance is down with the ramair even with two 80mm cold air feeds. 

I justified the ramair cone thinking cold air feeds etc but nah,  the noise isnt worth the performance drop or turbo wear.

 

 

Haha it's all banter! 

 

I did think the car feels like it's not pulling as strong as it was with the standard item in place but then I'm thinking it's possibly placebo, to be honest I haven't ran an extra cold feed to it as yet and just kept the bottom half of the standard box in place so it's got some kind of feed as such. 

 

The S2000 filter seems to be the most popular item hence why fitting it in the first place! 

 

What have you done gone back to the sealed unit? 

A diesel does not have a lambda sensor to adjust fuelling like a petrol car, therefore when you throw a free flow filter on the ECU hasn't a clue and doesn't add extra fuel to go with any extra air.

However, on a turbodiesel the point is moot since airflow (boost) is capped by the ECU at a set pressure and the turbo will cram air into the engine at 2.5 bar peak even if you have absolutely no filter at all, only if your standard filter gets really clogged will it affect performance.

This is why fancy exhausts and induction kits make absolutely no difference to a PD130 until you start modding heavily and going above ~220 BHP.

 

Petrol thinking = wrong thinking.

Yeah I know what you mean sepul, I looked online at the recommended modifications people suggest for these cars and sort of ticking it off the list,  S2K filter, 312mm, RARB, better suspension etc I'm used to a car with serious amount chucked into it to perfect the handling and the fabia handles like a boat and can't be having that 

 

My next question is where's the best place to get these mapped? I know it's all preference but want a reputeable tuner that will actually map the car properly, hear a lot of horror stories! The fabia feels dead slow to what I'm used to, the torque at first was like woah... but then got very boring very quick! A week later to be precise 

Edited 8 June, 20179 yr by JaamesVRS

You could throw £50k at the Fabia and it won't handle as well as the pug.

 

A generic remap will be just fine on the standard turbo, no need to get all precious, to say the PD130 is well understood would be an understatement!

Oh yeah granted, i just want to improve it a little as it's currently like driving Titanic.

 

i don't want to get a map off anyone then it 1: kills the clutch/DMF or 2: Kills the turbo, seen some real dodgy maps out there 

 

12 hours ago, JaamesVRS said:

Haha it's all banter! 

 

I did think the car feels like it's not pulling as strong as it was with the standard item in place but then I'm thinking it's possibly placebo, to be honest I haven't ran an extra cold feed to it as yet and just kept the bottom half of the standard box in place so it's got some kind of feed as such. 

 

The S2000 filter seems to be the most popular item hence why fitting it in the first place! 

 

What have you done gone back to the sealed unit? 

 

Yeah Apollo going back on today.   I think my power is border line for the standard paper element to cope with so stuck with the Apollo.  Its nice under the engine bay to.  The Induction note is just right off it plus I mounted it right at the front where the Air flows in to the slam panel. 

 

See with mapping,  whats the mileage and history like on yours?? You have to be prepared for accelerating dmf issues and turbo issues on an older motor......

 

As for where to go for mapping,  Any reputable place that does not offer huge gains etc ec    I first had a tdi tuning box which I was delighted with before tearing off the old turbo and intercooler etc etc it listed at 165bhp  and was enough.    Interestingly on the rolling road during its custom map set up it made 149 bhp on the standard map. ( Blt )

 

Off oot to feed the reigndeer  ( truth)...  speak later

I've just removed my S2000 filter and replaced it with original airbox and paper filter. So much nicer with airbox and filter imo

Mileage is 130k, FSH (Skoda) stamped on the book every year, then the garage changed when the car changed hands, I will probably service every 7k or so just to keep ontop of things. I'm unsure about the turbo and flywheel however the turbo has 0 play and the clutch or DMF currently shows no sign of age, no shuddering rattling etc, if the clutch goes well that means SMF and uprated clutch which leads to another thing... bigger snail and more torque