stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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My mate has a MK4 Astra GSi turbo and it turned out the turbo and manifold were shagged. 
 
It was still under warranty but Vaux couldnt track down a standard turbo/manifold. 
 
So, for free, they have fitted a huffer off of an Astra VXR. 
 
My instant thought was 'what about fuelling?'. 
 
Vaux seem to have been very lacking in info about what they have done and im just wondering if its going to be ok.....
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SAL 
Premium Member
 
Registered: 19th Dec 05
 Location: Radlett, Hertfordshire 
User status: Offline 
 
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Change injector's ? 
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stan_the_man 
Member 
 
Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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He plans to fit VXR injectors at some point. 
 
Its a standard engine. Car only has a 2.5inch cat back exhaust. 
 
Will Vaux have just knocked the boost back a bit to account for the larger turbo?
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Steve 
Premium Member
 
Registered: 30th Mar 02
 Location: Worcestershire             Drives: Defender 
User status: Offline 
 
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its probably the same part anyway? or very similar
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stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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No its a popular upgrade on the ZLETS's. 
 
As to why, i do not know.
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Steve 
Premium Member
 
Registered: 30th Mar 02
 Location: Worcestershire             Drives: Defender 
User status: Offline 
 
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probably similar to the k03, k03s on the vags
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Warren G 
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Registered: 14th May 06
 Location: Kent 
User status: Offline 
 
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cant adjust anything like boost with tech 2 
 
very strange they fitted a vxr turbo
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stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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Would it be wise to get a RR day done?
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willhouse 
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Registered: 11th Jul 06
 Location: Sheffield 
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sure its not your mate telling porkie-pies that he has got a good deal?? when in fact it is just a standard replacement?
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SAL 
Premium Member
 
Registered: 19th Dec 05
 Location: Radlett, Hertfordshire 
User status: Offline 
 
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should be fine, if you can get it RR'ed and mapped would be a good start 
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stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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quote: Originally posted by willhouse 
sure its not your mate telling porkie-pies that he has got a good deal?? when in fact it is just a standard replacement? 
   
 
This is also a possibility...  
 
I know a few of the lads at the Vaux garage so will do a bit of snooping  
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Daimo B 
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Registered: 20th Mar 00
 
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quote: Originally posted by stan_the_man 
No its a popular upgrade on the ZLETS's. 
 
As to why, i do not know. 
   
 
Same as, they aint much good over 300bhp.  Same as the injectors everyone went on a mad rush buying.  Rated up to 300bhp... 
 
If your going to all that hassle to change the turbo, do it with one worthwhile, and upgrade fueling at the same time.
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stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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So are the VXR turbo's larger/better than the standard ZLET item?
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Daimo B 
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Registered: 20th Mar 00
 
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They do flow more I think.  Zlet item comes on boost pretyt much straight away, where-as the VXR takes a second or two until it spools up.  
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Fad 
Member 
 
Registered: 1st Feb 01
 Location: Dartford Kent Drives: 330cd 
User status: Offline 
 
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quote: Originally posted by stan_the_man 
He plans to fit VXR injectors at some point. 
 
Its a standard engine. Car only has a 2.5inch cat back exhaust. 
 
Will Vaux have just knocked the boost back a bit to account for the larger turbo? 
   
 
There is hardly any difference between the two turbos. The VXR one is like 0.3% (or something) more efficient. 
 
They are a direct bolt on jobbie and most people fit them oposed to the stock GSi item as the VXR item is miles cheaper. No need to adjust boost, fuelling or anything. 
 
The VXR turbo is not bigger nor a heffer of a turbo. 
 
If you fit one the driving characteristic may change slightly as word on the grape vine is they boost ever so slightly harder. Also you wont notice much withoout an upgrade remap. 
 
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Steve 
Premium Member
 
Registered: 30th Mar 02
 Location: Worcestershire             Drives: Defender 
User status: Offline 
 
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thats basically what i thought fad
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stan_the_man 
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Registered: 14th Feb 07
 Location: Perth, Western Australia 
User status: Offline 
 
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Cool lads. Cheers
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Superlite Ltd. 
Member 
 
Registered: 9th Jan 07
 
User status: Offline 
 
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Can't find the part number for the z20let turbo, so i think his local parts dept. couldn't either so just ordered an 55559850 LEH one  
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Superlite Ltd. 
Member 
 
Registered: 9th Jan 07
 
User status: Offline 
 
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How are they going to wangle the warrently??? When they send the old one back to vauxhall when they make a claim, they are going to know its the wrong part for that VIN plate  
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baza31 
Member 
 
Registered: 19th Apr 03
 Location: yorkshire 
User status: Offline 
 
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vauxhall wouldnt do this, they wouldnt risk been liable if anything went wrong. Of course they could source down the parts its vauxhall   
 
i think your mates lying
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