UNICHIP and the 350Z HUGE power gains
06-23-2004, 02:54 AM
#41
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Originally posted by mchapman
Originally posted by APS
Mate I have plenty of base line power readings from stock Z cars (on 98 RON fuel) that's why I find these power claims really strange. I have a real good idea what's going on here though I will keep to to myself until I have more time to investigate. By the way if you don't hold/tie the car down well on the dyno you can easily get a false power reading (high power measurement) and this false power measurement can be up to 15kW's at the tyres. As a matter of interest what do you guys think the stock power is for a Z car on a DD dynamometer.
Peter
APS
Obviously the people tuning a 350z TT would have baselines but you said yourself you didnt have a baseline of the car you tested with the HT exhaust? That is what I was refering to.
Originally posted by APS
Mate I have plenty of base line power readings from stock Z cars (on 98 RON fuel) that's why I find these power claims really strange. I have a real good idea what's going on here though I will keep to to myself until I have more time to investigate. By the way if you don't hold/tie the car down well on the dyno you can easily get a false power reading (high power measurement) and this false power measurement can be up to 15kW's at the tyres. As a matter of interest what do you guys think the stock power is for a Z car on a DD dynamometer.
Peter
APS
Obviously the people tuning a 350z TT would have baselines but you said yourself you didnt have a baseline of the car you tested with the HT exhaust? That is what I was refering to.
Peter
APS
06-23-2004, 03:02 AM
#42
True, either way though you shouldnt be worried as your exhaust still beat the HT in a direct comparison. It will be interesting to see if you bring any other information to the table about this issue.
06-23-2004, 03:10 AM
#43
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Originally posted by mchapman
True, either way though you shouldnt be worried as your exhaust still beat the HT in a direct comparison. It will be interesting to see what you find.
True, either way though you shouldnt be worried as your exhaust still beat the HT in a direct comparison. It will be interesting to see what you find.
Peter
APS
06-23-2004, 03:11 AM
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Btw where is the the Right hand drive ECU located? Is it on Passanger side?
the US spec is located on passanger side.
Peace
the US spec is located on passanger side.
Peace
Last edited by ypwpat; 06-23-2004 at 03:15 AM.
06-23-2004, 03:58 AM
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Originally posted by harryw
Drivers side RHS of footwell. If you look in the footwell you will see a little cover that comes off.
As always
H
Drivers side RHS of footwell. If you look in the footwell you will see a little cover that comes off.
As always
H
06-23-2004, 04:13 AM
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The ECU is located on the passenger side just behind and to the left of the cup-holder. I have already had mine out.
Slide out the cup-holder by depressing the plastic clip at the top, undo the 10mm bolt behind the cup holder and unclip the lower plastic dash panel. The ECU is directly behind there. It is a 10 minute job. at most, to remove it.
Slide out the cup-holder by depressing the plastic clip at the top, undo the 10mm bolt behind the cup holder and unclip the lower plastic dash panel. The ECU is directly behind there. It is a 10 minute job. at most, to remove it.
06-23-2004, 03:42 PM
#49
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thanks malcolm!!! does not seem to be too hard at all!!!
APS:
As we all know that the automatic version Zed has its fuel cut set to 7000 rpm, do you think we can raise the manual version zed's fuel cut to 7000 rpm as well? I wouldn't think there is any difference on both man. and auto. engines, correct?
How safe do you think it is to be done at 7000 rpm?
Thanks!
cheers,
richie
APS:
As we all know that the automatic version Zed has its fuel cut set to 7000 rpm, do you think we can raise the manual version zed's fuel cut to 7000 rpm as well? I wouldn't think there is any difference on both man. and auto. engines, correct?
How safe do you think it is to be done at 7000 rpm?
Thanks!
cheers,
richie
06-23-2004, 08:14 PM
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Hi Guys,
Here’s a dyno graph showing power and torque at the wheels of a manual 350Z track model (running on 98 RON fuel) which was stock except for a HT exhaust. Note the peak power 154 kW.
The same engine with the HT exhaust was then fitted with a Unichip computer. As you can see from the graph, the torque and power improved dramatically across the entire RPM range. A peak power increase of 12 kW, over the exhaust fitment only. What was particularly impressive was the torque gain from below 2,000 RPM through to redline.
Peter
APS
Here’s a dyno graph showing power and torque at the wheels of a manual 350Z track model (running on 98 RON fuel) which was stock except for a HT exhaust. Note the peak power 154 kW.
The same engine with the HT exhaust was then fitted with a Unichip computer. As you can see from the graph, the torque and power improved dramatically across the entire RPM range. A peak power increase of 12 kW, over the exhaust fitment only. What was particularly impressive was the torque gain from below 2,000 RPM through to redline.
Peter
APS
06-23-2004, 09:38 PM
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Originally posted by nuff
Peter, did you advence timing so the cars can only be used with 98RON fuel instead of just normal premium?
Peter, did you advence timing so the cars can only be used with 98RON fuel instead of just normal premium?
Peter
APS
06-23-2004, 10:33 PM
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did you advence timing so the cars can only be used with 98RON fuel instead of just normal premium?
Nuff, I keep on repeating this, but the manual that came with my Zed states that the Australian and Japanese Zeds need 98RON fuel. That would lead me to believe that ity is already tuned for 98RON.
Nuff, I keep on repeating this, but the manual that came with my Zed states that the Australian and Japanese Zeds need 98RON fuel. That would lead me to believe that ity is already tuned for 98RON.
06-23-2004, 10:41 PM
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the manual that came with my zed, i think says that you can you the any premium and in emergency half/half of unleaded and premium. I'll double check the manual tonight.
I also have talked to Peter and he told me that if I use 98 RON I should be able to advence the timing by 4 degrees.
I also have talked to Peter and he told me that if I use 98 RON I should be able to advence the timing by 4 degrees.
06-23-2004, 11:08 PM
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I have to agree with David here. My manual says 98 octane fuel.
Peter (APS) thanks for the dyno chart. That is a fine improvement although the numbers are strangely low for your stock car.
Are all the cars in Melb that you are putting on the dyno working out to be around those figures?
Peter (APS) thanks for the dyno chart. That is a fine improvement although the numbers are strangely low for your stock car.
Are all the cars in Melb that you are putting on the dyno working out to be around those figures?
06-23-2004, 11:23 PM
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Originally posted by zuff
Peter (APS) thanks for the dyno chart. That is a fine improvement although the numbers are strangely low for your stock car.
Peter (APS) thanks for the dyno chart. That is a fine improvement although the numbers are strangely low for your stock car.
06-23-2004, 11:34 PM
#57
Good work on the dyno.
Wonder how it would look with some hi flow cats and K&N drop in?
What factors are the Unichip managing?
Does it have control over the CVTCS system?
Wonder how it would look with some hi flow cats and K&N drop in?
What factors are the Unichip managing?
Does it have control over the CVTCS system?
06-23-2004, 11:34 PM
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But even the % increases are out...
still the Unichip looks great on the car they are testing. ^^^ looks at credit card and ponders whether a unichip is the way to go!
still the Unichip looks great on the car they are testing. ^^^ looks at credit card and ponders whether a unichip is the way to go!
06-24-2004, 12:05 AM
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I'm not talking about the unichip, this is in reply to Apsilon.
Maybe it makes sense if i type this.
[sarcasm]
But even the % increases are out...[/sarcasm]
Just making fun of the differences in what Peter from APS got from stock to Hi-tech exhaust. Well what he reckon he got!
Maybe it makes sense if i type this.
[sarcasm]
But even the % increases are out...[/sarcasm]
Just making fun of the differences in what Peter from APS got from stock to Hi-tech exhaust. Well what he reckon he got!