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Corsa Sport » Message Board » General Chat » Projects and Builds » Z20LET MK4 Astra SRI-Turbo - For Sale!


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Author Z20LET MK4 Astra SRI-Turbo - For Sale!
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
14th Sep 10 at 10:59   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by marklawton
nice one chris, have you sorted the low boost problem yet or you hoping that it just needs a remap?


Not too sure yet, still need to try my boost gauge on a friends GSI to make sure its not the gauge, but it was giving the same figures before I put the new turbo on, think its just the gauge under-reading.
Dazzi-gsi
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Registered: 7th Oct 03
Location: Aberdeen Drives: C20LET Astra Gsi
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14th Sep 10 at 20:51   View User's Profile U2U Member Reply With Quote
Hope it aint wallace p mapping it! Mine and my mates z20 went pop after
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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15th Sep 10 at 16:55   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dazzi-gsi
Hope it aint wallace p mapping it! Mine and my mates z20 went pop after


Thats not good! Heard a lot of good things about them too though.
M-IKE19
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Registered: 25th Nov 07
Location: highlands Drives; Astra GSi Turbo and Corsa GSi
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21st Sep 10 at 19:32   View User's Profile U2U Member Reply With Quote
i wouldent go near wallace performance the only cars they can map properly are evos and scooby, they f##ked my mates 106 gti
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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21st Sep 10 at 20:19   View User's Profile U2U Member Reply With Quote
Christ, thats a good point, only good reviews I have read are from evo and impreza owners
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
21st Sep 10 at 23:52   View User's Profile U2U Member Reply With Quote
Oh, should note that the side mouldings have been sprayed, very happy with the finish. Going to get the front bumper done too, after winter though as its kind of pointless doing it now, gritters will wreck it!

Also ordered the tx autosport hophat kit again, as I need it to replace the twat of a boost pipe that's about 15mm smaller than the rest.
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
28th Sep 10 at 14:46   View User's Profile U2U Member Reply With Quote
Update time, been a while.

So it looked like this for a while:



Sent the side mouldings off to Spraytech in Halkirk (01847831478), excellent job, and very cheap!





That was last week, this week fitted the tx autosport tophat kit, some size difference over standard, noticed a bit of difference in the lower rev range with it

Before:



After:



You can tell the difference in pipe diameter from the pics

Exterior is pretty much complete now, few bits im going to tidy up after the winter takes its toll, but next up is the remap

Going to go to either Hypertech or Sitech. Phoned both £400+vat for sitech, waiting on a phonecall from Duncan at Hypertech for a price. Hopefully get it done late October in time for the MOT.

Nice parting photo:
marklawton
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Registered: 24th Apr 05
Location: Pensby, Wirral Drives:Golf mk4 GTI
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28th Sep 10 at 14:50   View User's Profile U2U Member Reply With Quote
vectra c cold air feed next?
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
28th Sep 10 at 14:54   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by marklawton
vectra c cold air feed next?


Already got it
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
13th Oct 10 at 21:58   View User's Profile U2U Member Reply With Quote
Remap is booked, going down to hypertech on the 21st of october
DannyB
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Registered: 6th Feb 08
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13th Oct 10 at 22:22   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by ChrisBoom
Remap is booked, going down to hypertech on the 21st of october


I'll probably meet you down there mate, not too far from me.
ShEp
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Registered: 9th Aug 05
Location: Dingwall, Highland
User status: Offline
13th Oct 10 at 22:27   View User's Profile U2U Member Reply With Quote
Remove/bypass the rear bcs first.

Wouldn't advise doing it after, not sure how it would react on an already mapped car.

There's how to's on AOC, I noticed a sizeable difference from just bypassing the BCS
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
14th Oct 10 at 12:30   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by ShEp
Remove/bypass the rear bcs first.

Wouldn't advise doing it after, not sure how it would react on an already mapped car.

There's how to's on AOC, I noticed a sizeable difference from just bypassing the BCS


What benefit is there to bypassing the bcs anyways?
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
19th Oct 10 at 21:16   View User's Profile U2U Member Reply With Quote
Couple of new photos of the engine bay, first photos ive taken of it on the new phone, just trying it out really







Also picked up a nasty puncture, but had it repaired today:



Remap thursday
Bonney
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Registered: 14th Nov 04
Location: St Helens
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20th Oct 10 at 17:19   View User's Profile U2U Member Reply With Quote
Like it alot now!

Want to swap mine for yours
DannyB
Premium Member

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Registered: 6th Feb 08
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20th Oct 10 at 18:37   View Garage View User's Profile U2U Member Reply With Quote
Boom mesage me your number and I'll see about coming down tomorrow or I'll meet you in Perth somewhere if you're going back that way (up the a9?) as I'll be in Perth tomorrow night.
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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20th Oct 10 at 20:36   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Bonney
Like it alot now!

Want to swap mine for yours


Might have to yet depending how my job goes, it could end up being too expensive to run!

Danny, u2u'd

Found that the o/s wheel bearing is on the way out, ordered one from autovaux so its fixed for the MOT.
Bonney
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Registered: 14th Nov 04
Location: St Helens
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20th Oct 10 at 20:40   View User's Profile U2U Member Reply With Quote
Never nice having to get rid of something you have worked so hard on
Mertin
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Registered: 12th Oct 05
Location: Scotland
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23rd Oct 10 at 13:40   View User's Profile U2U Member Reply With Quote
If your looking to sell and get something cheaper to run iv got the ideal thing
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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23rd Oct 10 at 17:53   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Mertin
If your looking to sell and get something cheaper to run iv got the ideal thing


Oh, no selling just yet, wait to see what happens with jobs first
Mertin
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Registered: 12th Oct 05
Location: Scotland
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23rd Oct 10 at 18:31   View User's Profile U2U Member Reply With Quote
Oh no, was just a suggestion incase you ever was in the future, I dont know what to do with mine. Spend some more on it or sell it
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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3rd Nov 10 at 20:48   View User's Profile U2U Member Reply With Quote
Thought I better update this!

Car was mapped and RR'd at hypertech, made 245bhp and 250ft/lb torque, VXR figures, happy with that for now. Still running low boost though, 14psi overboost holding 10psi, its capable of much more

Had a slight issue with a misfire, new, properly gapped plugs sorted it though.

Graph:



Hypertech:


The dyno room:


Car on the dyno:





Quick 0-100 video, terrible one at that



Filmed on a private road

MOT is next, still waiting on the wheel bearing, phoned autovaux and it turns out the courier lost it . So a new one was dispatched tonight, hopefully have it Friday.

No plans over the winter, just keep it clean and tidy, then once the gritters are gone im getting the bonnet and front bumper resprayed, plus any other unsightly bits that may appear with the winter weather.
Pete_vxl
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Registered: 24th Nov 06
Location: Lochgelly, Fife
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3rd Nov 10 at 21:41   View User's Profile U2U Member Reply With Quote
Good stuff,makes me miss my Z20. Feels great when mapped eh? much more responsive.
ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
4th Nov 10 at 20:40   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Pete_vxl
Good stuff,makes me miss my Z20. Feels great when mapped eh? much more responsive.


Yup, made some difference. Think im going to have to up the boost to stage 3 level, might use KWP, save the custom map I have on there and try a generic map, see if it makes any difference.
Pete_vxl
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Registered: 24th Nov 06
Location: Lochgelly, Fife
User status: Offline
4th Nov 10 at 20:47   View User's Profile U2U Member Reply With Quote
prepare for the jerkiest map of your life lol My stage one was ok when full throttle but half and quarter peddle was horrendous. Still though, for what you pay you cant argue.

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