Monaro Facts

[Ronaro]

Can someone just confirm the following please;

All CV8 Monaros were built at Holdens Adelaide factory?

04 CV8 factory power was 328 bhp and 343 ft lb torque?

Thanks

[mfp4073]

Yes that is correct.
Although the UK brochure lists the output at 333PS at 5600rpm and 343lbft at 4000rpm
Compression ratio 10.1:1
0-60 sub 6 sec
Top speed 160+

John

[Ronaro]

Thank you John.

[George Smiley]

The CV8 can easily be up to 400bhp with nothing more than a tune.

[mfp4073]

George Smiley said:

The CV8 can easily be up to 400bhp with nothing more than a tune.

My CV8 has headers, cat back and a cold air kit. It was tuned by Wortec and makes no more than 425HP on a good day.
I can't see a totally standard CV8 making 400HP with just a tune. However an early CV8 always shows the most gains with these modifications and has best bang for your buck out of all the Monaro's.

[George Smiley]

That's because headers don't add much HP, I had my very own CV8 tuned and reporting 400hp at SRR. But of course, Wortec tax.

I remember one chap beat a wortec header / tune VXR8 by simply upping the commanded fuel figures on his tune at a rolling day, the stats are back in the history threads somewhere.

[mfp4073]

George Smiley said:

That's because headers don't add much HP, I had my very own CV8 tuned and reporting 400hp at SRR. But of course, Wortec tax.

I remember one chap beat a wortec header / tune VXR8 by simply upping the commanded fuel figures on his tune at a rolling day, the stats are back in the history threads somewhere.

Do you think I could gain any extra power with another tune and without having to change any engine parts such as cam and cylinder heads.
The Wortec remap was an expensive £800.00, so I would have thought for that price there wasn't anything left to tune!!!!!!

[300bhp/ton]

George Smiley said:

That's because headers don't add much HP, I had my very own CV8 tuned and reporting 400hp at SRR. But of course, Wortec tax.

I remember one chap beat a wortec header / tune VXR8 by simply upping the commanded fuel figures on his tune at a rolling day, the stats are back in the history threads somewhere.

If headers aren't adding power they are the wrong header. It is physics.

Also just a tune seems excessive gains, suspect any rolling road number is not really all that comparable to manufacture claimed numbers.

[vxr2010]

The cv8 was always under tuned from the factory so they could make the next model look better with the extra power gains , mine had a focus pack put on at 4k£ , i’m happy to say not paid for by me , a different intake headers sports cat plus cat back system and a remap , its the combination of all the bits that add power , it’s from memory 330 at the wheels so around 430 bhp , if you want performance , but cheaper than 4k then put a 3.9 diff in it works very well , but up the power and brakes are crap , modding is a slippery slope , current cost so far around 12k but no regrets , but i still got 35mpg out of it on a long run lol

[vxr2010]

Adding to the above , a tune on its own on a standard cv8 is around 30 to 40 ish bhp extra , i had my ls1 ute mapped it is not very noticeable , the diff was

[Lincsls1]

mfp4073 said:

My CV8 has headers, cat back and a cold air kit. It was tuned by Wortec and makes no more than 425HP on a good day.
I can't see a totally standard CV8 making 400HP with just a tune. However an early CV8 always shows the most gains with these modifications and has best bang for your buck out of all the Monaro's.

I would say you're pretty much all out at 425bhp with your current setup. Maybe another remap may yield the smallest of gains, but I'd say would be very cost inefficient now and be not noticeable.
Time to consider a cam, heads, a different intake plus a remap to see the game move noticeable forward. That might get you to 500bhp at the fly.
That's your next move, then you can report back to me, and I'll copy.

[SturdyHSV]

Lincsls1 said:

mfp4073 said:

My CV8 has headers, cat back and a cold air kit. It was tuned by Wortec and makes no more than 425HP on a good day.
I can't see a totally standard CV8 making 400HP with just a tune. However an early CV8 always shows the most gains with these modifications and has best bang for your buck out of all the Monaro's.

I would say you're pretty much all out at 425bhp with your current setup. Maybe another remap may yield the smallest of gains, but I'd say would be very cost inefficient now and be not noticeable.
Time to consider a cam, heads, a different intake plus a remap to see the game move noticeable forward. That might get you to 500bhp at the fly.
That's your next move, then you can report back to me, and I'll copy.

When you go for the cam and so on, I'd recommend you get LS Performance (Luis Sola in Aus via Carl Herkes in Southampton) to sort the tune if possible

[mfp4073]

Lincsls1 said:

I would say you're pretty much all out at 425bhp with your current setup. Maybe another remap may yield the smallest of gains, but I'd say would be very cost inefficient now and be not noticeable.
Time to consider a cam, heads, a different intake plus a remap to see the game move noticeable forward. That might get you to 500bhp at the fly.
That's your next move, then you can report back to me, and I'll copy.

That's my next move?
If I spend any more money on my car Mrs mfp4073 will kick me out......again!!!!!!!!

Edited by mfp4073 on Monday 23 September 16:34

[George Smiley]

mfp4073 said:

George Smiley said:

That's because headers don't add much HP, I had my very own CV8 tuned and reporting 400hp at SRR. But of course, Wortec tax.

I remember one chap beat a wortec header / tune VXR8 by simply upping the commanded fuel figures on his tune at a rolling day, the stats are back in the history threads somewhere.

Do you think I could gain any extra power with another tune and without having to change any engine parts such as cam and cylinder heads.
The Wortec remap was an expensive £800.00, so I would have thought for that price there wasn't anything left to tune!!!!!!

Without a cam there’s no point. 300bhp headers clearly do add power but the cv8 was factory detuned that the biggest gain was a remap on them.

Mfp the only thing to change is the throttle map, a few more degrees called makes the car feel a lot more alive. It’s why st tuners used to rip off members by this very trick, feels a lot more responsive especially lowdown.