New Headers Advice

[panhead]

For those who might be interested I will post up my dyno sheets after work.

Signed by a JP I hope.




.

 

[mpower]

if you are after more low and mid range power i'd suggest 1 3/4. Buy a reputable brand though.

 

[panhead]

if you are after more low and mid range power i'd suggest 1 3/4. Buy a reputable brand though.

That's may be technically true but it doesn't make much difference on the street.

If you want some mechanical loudness introduced to the mix go for the 1 7/8

I'm not arguing with you mpower, just horses for courses.




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[.05]

You do understand majority of VE & VF Commodores were built with Chinese parts! Right down to the ally wheels!!

and its all GM approved and has strict QC from china , aftermarket chinese made is junk , chinese made headers, exhaust are junk, they the chinese even make stroker 308 cranks rods ect , do some research on chinese aftermarket parts , its cheap rubbish not fit to use, even dangerous copy wheels made with cracks breaking ect

 

[blackve76]

That's may be technically true but it doesn't make much difference on the street.

If you want some mechanical loudness introduced to the mix go for the 1 7/8

I'm not arguing with you mpower, just horses for courses.




.

Agreed the low down power loses with 1 7/8th headers is bull on the gen 4 maybe the LS1.

 

[426Cuda]

I have redacted the workshop's name. If anyone is genuinely interested PM me.

Stock tune, OTRCAI, GTS mid section, headers, cats and marriage savers. ~206rwkw

As above hardware and tune ~230rwkw

As above but with 200cpi bullet cats and retune. ~253rwkw. Picked up heaps of useable tq and hp. A big leap over previous tune and the only hardware change was ditching thr HSV cats for the 200cpi metal bullets. It's no drag car, no rocket. But even with stock final drive ratio can get around 5 sec 0-100, despite wheelspin.

Later fitted VF2 bimodal mufflers. Had a retune, which netted approx 260rwkw. No dyno sheet for the last tune. Not the same tuner either. Couldn't feel much difference in drivability.

 

[VS 5.0]

@426Cuda , do you have the torque graph for File .019 ?

 

[426Cuda]

@426Cuda , do you have the torque graph for File .019 ?

Hi Mate,
No unfortunately. The other side of that one is blank. It's always annoyed me too...

 

[VS 5.0]

Hi Mate,
No unfortunately. The other side of that one is blank. It's always annoyed me too...

This is where we need a dislike button.

 

[426Cuda]

This is where we need a dislike button.

I don't have the tq graph for the stock tune @ 206rwkw either. Grrrr. Care to hazard a guess at where you think the tq might peak at 253rwkw? I was thinking maybe around 520Nm. But it's a pure guesstimate. My theory is that the final rwkw figure roughly equated to the stock fwkw and that the tq might follow a similar curve...