displaying posts 1 to 12 of 12

Author Subject: xu7jp4 with gti6 ups!
karazu

Junior User

Location: Londrina Parana Brasil

Registered: 21 Feb 2008

Posts: 59

Status: Offline

Post #1
I'm thinking of install the gti6 upgrades to my 1.8 16v engine...

So... looking for help... I was looking for tradding this:

gti6 exhaust manifold
gti6 inlet with 1.8 injectors

Now... what will do that going to make in the car?
Does I will have to re-map ECU? how high can i put the rev-limit? 7k? It's 6250rpm now..

What do I have to do more? Dont want to open the engine (here in brazil is a lot dificult to find spare parts...)

Can anyone help me out?
thanksss
Posted 8th Sep 2010 at 09:07
simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,220

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Post #2
I've heard of people doing this that have got away with mapping but to get the full benefit its best to map, i did an Xu7 before with gti cams and ex man and kept the std plastic intake but fitted xsi injectors (not sure if different i just had them laying about) in the rollers on the factory xu7 map it was only 121bhp but when mapped it was up to 148bhp

i later blew that engine and bought a gti6 engine complete as its an easier way to get the power

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Posted 8th Sep 2010 at 14:03
asim_pug306

Senior User

Location: Bradford

Registered: 26 Aug 2009

Posts: 933

Status: Offline

Post #3
I have GTi6 inlet and exhaust manifolds on my 1.8 16v engine. On a recent rolling road power wasn't up at all. As Simon says, a remap will definitely be needed to get the best gains, however there is a small increase in low down torque. Where did you get yours remapped Simon?

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Posted 8th Sep 2010 at 14:22
karazu

Junior User

Location: Londrina Parana Brasil

Registered: 21 Feb 2008

Posts: 59

Status: Offline

Post #4
How abouth a GTI6 ECU (unlock) to make it...

mine is sagem.. (shit I know).

Anyone have a experience trading the ecus?

thanksss =D
Posted 8th Sep 2010 at 20:12
c.a.r.

Seasoned Pro

Location: Stevenage

Registered: 27 Jun 2008

Posts: 2,211

Status: Offline

Post #5
Throttle response will improve no-end, but I was told by someone on here that it's the XU7JP4 cylinder head that is restricting the power, so if you could swap it out for an XU10 one (either GTi6 or XSi) then theoretically it would improve things...

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Posted 8th Sep 2010 at 20:43
karazu

Junior User

Location: Londrina Parana Brasil

Registered: 21 Feb 2008

Posts: 59

Status: Offline

Post #6
hmmm I was not looking for a "big" change like that...

really i was looking for changing both mainfolds and have a gain like 20-30hp...

but... like everyone is telling... thats going to be hard... Im going to talk to some friends to make a remape of my sagem... if they can do it... I think I will give it a try... if not... i will just trade the exhaust mainfold.

well... if anyone have any more information... im looking for some experience that could give me a light! =D
Posted 8th Sep 2010 at 21:28
simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,220

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Post #7
It was the gti6 cynilder head and inlet that was my next plan just before i put a hole in number 1 piston, it was mapped by interpro bristol iirc they fitted a dastek unichip (piggyback unit)

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Posted 8th Sep 2010 at 22:22
dragoon

Seasoned Pro

Location: Ghent - Belgium

Registered: 30 Dec 2008

Posts: 1,071

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Post #8
the xsi head would be a better choice than the gti one. together with some gti cams+pulleys

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Posted 8th Sep 2010 at 23:49
jcphat

Seasoned Pro

Location: In the day room, Nurse!

Registered: 22 Feb 2008

Posts: 1,061

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Post #9
My experience with the 1.8 was that the exhaust manifold made a really noticeable difference- you look at the standard one and can easily see why!
The inlet and cams made no real improvement at all as the ECU limits the car to just over 6k and the six develops lots of power beyond that. The 1.8 head-according to Sandy -is really restrictive too.
To get the benefit of the inlet and cams you need the 2.0litre 135bhp head (or an expensive porting job on the 1.8) A 6 head would work too.
A remap would be necessary if only to raise the rev limit. Dixon's race car build demonstrated that a 1.8 N/A engine fully developed can produce 220bhp.

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Posted 9th Sep 2010 at 01:24
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,773

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Post #10
Dixons engine was revised end of last year, afaik was over 230 bhp Smile

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Posted 9th Sep 2010 at 01:42
asim_pug306

Senior User

Location: Bradford

Registered: 26 Aug 2009

Posts: 933

Status: Offline

Post #11
Just had a look at my ECU and it's the Sagem model. Is it still not possible to remap these then?

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Posted 9th Sep 2010 at 02:17
simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,220

Status: Offline

Post #12
you can with a dastek unichip piggy backed on to it

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Posted 9th Sep 2010 at 02:22

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