That's not the way I read it, Peter said that it (the ASP exhaust) was marginally better across the full rev range on both power and torque on the standard ECU.

He has posted on another thread that a Unichip piggyback tuned car gives good power gains, that is fitted with a high flow catback system most probally a HT.

David

 

Originally posted by zuff
Well then that's not objective! Since the APS exhaust is better suited to the TT it'll be optimised with the UNICHIP.

I dont follow, what are you saying here.

If the Hi-tech somes within 3 kw of the APS in that situation i'd say it's actualy ahead. The Hi-tech was never built for FI.

Peter was saying that their exhaust on a non turbo Zed will beat a HT exhaust on the same Zed by 3kws at peak and stay ahead of it all the way across the dyno chart in power and in torque Without the Unichip. And once you put the chip on and tune it you can get another 11kw.

It's always a compromise with these things, you are either better suited to FI or NA but not both. Same with the UNICHIP settings.

You tune the Unichip to your car specifically on a dyno with a laptop. So everyones tune will be different. There is no way the setting from the Turbo would work on a NA Zed anyway.

 

Correct........the dyno test for both exhaust systems were conducted with the stock nissan 350Z computer.

Peter

APS

 

Mate you have me completely confused now.

How can the H/T system be better than the APS system if the APS exhaust system made better power across the entire rpm range, and we are talking about a N/A engine here not a TT engine.

Both exhaust systems were tested on the same car, same day, same fuel, same dyno, same factory computer, I don't know of any more precise and objective way of obtaining meaningful real world results.

Peter

APS

 

David, Your 100% correct on both points.

Peter

APS

 

It's this post that i was reply to.

Ie if the test was just replacing the exhaust on the APS TT car it wouldn't be a valid test. You needed to test in a NA environment.

I guess i should have waited for APS to confirm what the test comprised of....I was just thinking out aloud.

It should very promising if you can pull 3kw more out of a stock car with stock ECU. BRAVO! That's a real achievement.

 

I was saying they would be using the stock ECU with either the Unichip Piggyback or the Piggyback Chip they made for the TT to tune a NA 350z. To get that extra 11kws which APS mentioned further up the page.

And it turns out they will be using the Unichip which im sure you've seen by now.

 

Yeh... my point is that they didn't use the Unichip in that test.

They would require separate tuning if they did and the Unichip could squew the outcome.

I'm not trying to pour cold water on APS. I just wanted to know under what circumstances they came up with the results. APS are a stand up crew and did it right by having the car bone stock.