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F6 fitzi

FG F6 450rwkw

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Gday all,

1st time poster long time lurker. 

Use to own an 08F6 and was hanging to get another one with all the mods done this time. 

Brought a 2010 FG F6 sedan over the weekend, 170,000ks 😖

Needless to say it pulls like a 14yo.

Previous owner had it tuned by sparks performance in Melb.

He said the mods are:

Valve springs and head studs have been done.

Race equipped stage 3 turbo, 68mm billet core. 

45mm external wastegate (plumbed to the outside under the car)

Stage 3 PW Intercooler.

PW full fuel system with surge tank, pittsburg pump and fuel pump voltage booster. 

1100cc injectors. 

Built ZF, input shaft and something was done with the drive plate, (cant remember exactly)

Battery relo with a 4" intake. 

huge trans oil cooler.

4" Xforce exhaust. Loud af unfortunately.  

Only runs on E85 and the car didn't come with or need a device. 

Pretty sure its a standard tail shaft (with loops) and diff. 

he said it run 10.6 at Calder on 235 radials. 

will post some pics / Dyno sheet soon.

 

The car come without a Roadworthy (was cheap imo) . Brought it to my mechanic to see if it would pass with the surge tank and he said its fine. 

He did say the External Wastegate has to go

Should I remove the Wastegate and block it up only for the roadworthy and tell them to not let the car go on boost 😱.

Or does anyone here have any other ideas or know of a mechanic that would overlook this for a Roady in Melb?

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if your mechanic is able to give you a roadworthy, then just let him do it... the external gate can just be plumbed back into the dump pipe to get around the issue. It'd be super loud with a "screamer pipe" like that on boost...

 

with those mods, it's unlikely you'll get a roadworthy anywhere else, so go with whatever he is willing to do.

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12 minutes ago, F6 fitzi said:

Should I remove the Wastegate and block it up only for the roadworthy and tell them to not let the car go on boost 😱.

 

It depends if you want 50psi in the mid. You could always put a large hole in a silicone cooler coupling to avoid that. 

 

Does it have to go or can it be plumbed into the exhaust?

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I asked can it be plumbed back into the exhaust and he said it has to go completely.

They have to take photos now for vic roads. 

Might get a 2nd or 3rd opinion. 

 

If that doesnt work could get another tune/xcal and have have a grandma tune with the wastegate removed for the roadworthy. 

Wanted a 98 tune anyway. 

 

😂@ as if, never had a post worthy car till now.

Edited by F6 fitzi
Tried to insert a pic of😣

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What ex manifold is on it?

 

You can't just not run a wastegate man, no matter how it's tuned. It'll boost to the moon if someone floors it. It'll easy go 20+psi on part throttle.

 

If pics have to be taken, I'd assume those pics will have to show a stock manifold with a stock internally gated turbo etc.

 

Maybe you can get someone to send you some pics of a stock setup?

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Looks like a stock manifold. Will take pics and try uploading them tomorrow. 

Would a limit of 2,000rpm +/-stop any spooling? 

Hundreds of similar cars would have somehow been through this and got a roadworthy. 

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nah, not hundreds... most people get a stock (or near stock) car and then modify it, which doesn't require a roady for the modifications... (at least here in Victoria)... you're doing it the other way; you need a roady and your car is already modified... this doesn't work well if the person doing the roady cares at all about the risk of them losing their ability to give out roady's...

 

but, yeah, a 2,000 rpm limit would do the job, for sure... but would that compromise the roady? dunno...

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If it's a stock manifold then all you need is a stock turbo, quickly change the flange on your dump to fit and possibly the change the dump length a little bit.

 

You'd need a couple of silicones to hook it up. 

 

I think the issue will lie with the manifold/turbo setup. 

 

If it was my job to approve wg type, among other things, you know I'm not going to fall for a setup that has an ex gate provision blanked off.

 

I'm not in vic though so I don't have all the answers. 

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Finally loaded some pics. 

Does that look like a standard ex manifold? Would be happy an prefer to just plumb the gate exhaust back into the dump if that's all it took. 

20190222_141937.jpg

20190222_141825.jpg

received_388617761954957.jpeg

received_464419644091948.jpeg

received_256706361920667.jpeg

Edited by F6 fitzi
..

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manifold is standard with an external gate plumbed in.

 

keep the gate and get the dump modded so that it vents back into the exhaust system rather than atmo

 

also that silicone outlet to the cooler is a bit.......well stupid. look at fixing that up at some point with some nice stainless or the likes if it were me....does not need to be even remotely that size/high

Edited by MBAF

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what MBAF said... it's a standard exhaust manifold with a external gate replacing the internal gate system either coming directly out of the collector of the exhaust manifold or out of the exhaust housing on the turbocharger itself. Cool way to control higher airflow :)

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Yep will do, wanted to plumb the gate ex back to the dump anyway. Not as noisy on wot too. 

Will cut the cooler pipe down for the time being. 

Have to keep taking it to another mechanic/s who will sign off on the external gate. 

Have to lift it too, scraping every speed bump.

ssl kings all round maybe. 

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nawwwwww free hugs for everyone

 

33 minutes ago, Puffwagon said:

Sorted then. Haha a screamer pipe can get a bit obnoxious after a while.

lies! I used to love scaring grannies with screamer and flames from the front wheels

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this'd do it. RE are a company who do turbochargers. 68mm is plenty enough to make 450 with ease on a Barra.

20 hours ago, F6 fitzi said:

Race equipped stage 3 turbo, 68mm billet core.

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Recent update. Took the car to dynomite and got the roady. 

It went on the dyno and only made 411kw. 

Dion did this retune ( in pic ) with the same psi. 

He said it had 30kw more but was concerned about the bottom end. 

Screenshot_20190328-155803_Gallery.jpg

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yep, the TC cant handle the extra power, unfortunately, so you have to be much more careful with your throttle inputs as you get up to higher power (anything more than 300rwkw, really ;) )

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1 hour ago, F6 fitzi said:

Recent update. Took the car to dynomite and got the roady. 

It went on the dyno and only made 411kw. 

Dion did this retune ( in pic ) with the same psi. 

He said it had 30kw more but was concerned about the bottom end. 

Screenshot_20190328-155803_Gallery.jpg

Why so much boost for low power. You got a blocked cat. 

 

Oh.  Is that 98 fuel????

Edited by arronm

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