Nissan/Infiniti Tech SR20DET? RB26DETT? VQ35DE? What's it all mean? Find out here!

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Old Oct 30, 2009 | 01:08 PM
  #14221 (permalink)  
-Mike's Avatar
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Originally Posted by vertigo
You think no one likes me? People like to bitch, its what they do, and they are far more likely to do so. Just because I dont have a barrage of nut swingers in here talking random shit, does not mean no one likes me. Does it make you happy that you are socially accepted here by a bunch of broke dick kids? I say that in the nicest ay possible.. really My intrinsic value will never come out on these forums, unless a few enlightened individuals pull it out of me.
Dude what in the fuck makes you think your so awesome? Your 4x4 fucking s14 with OEM wheels on it? Or the 300zx that is 900270626hp but noones ever seen, or the 1100 other cars you have listed but your like in a mad rush to sell that broke ass s14.

And your right my 240 has nothing worth while, it doesnt have Patricks pride performance coils, ISIS suspension arms, Maziora steering wheel, B&M short shifter, Corbeau fx1 bucket, Nagisa auto low mounts, 60k mile s14 ka/trans, dent free body, only missing the front bumper with working air conditioning and shit.

But your right, its not worth shit. Your a fucking cock eating little faggot, keep your dick sucker shut.
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Old Oct 30, 2009 | 01:10 PM
  #14222 (permalink)  
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Originally Posted by vertigo
Improperly calibrated injector parameters? That is a pretty elegant way to put it :] If we are talking about stock ECU cars, no nissan ecu has been completely reverse engineered to the best of my knowledge, so I highly doubt all of the fuel routines have been calibrated correctly. The larger u drift from stock injectors, the more these issues become apparent. And short of using an injector flow x duration look up table, the curve is going to be different than stock. Sure you can get it somewhat close with tuning, but its all black magic because the people who are tuning cars, are not using the right equipment, and typically dont know enough about engine dynamics to properly tune a car. Their idea of tuning, is getting a certain a/f ratio on a dyno @ WOT. That is why there are so many shitty running cars driving around.

but all of this is irrelevant, you cant deny that 550's are more desireable from a tuning and streetability standpoint. Nothing about waldo's setup says he will be making more than 350whp from what i have seen. Plus if he does go for serious power later, injectors are easy to swap. There is a reason OEM's more often than not, put in JUST enough injector to support max power.
Certainly, for a setup that's 350whp and is flow limited to that, I'd rather see 550's and 4-bar fuel pressure than 740's for a street car. That's not always the rule I use, though. I've found more often that not, that OEM's (Nissan at least) size the injectors to match the max flow of the turbo. That way, if for some reason, there's an issue with the wastegate, the ECU can at least fuel the motor properly, engine strength not withstanding.

The issue with going way bigger than stock on a retuned stock ECU is that you have to know where all the corrections are. Ignore these and the bigger the injector, the more you're off.

About reverse engineering, Hi, I reverse engineered the S13SR ECU injector settings in the source code. The stock ECU mainly injects fuel based on MAF sensor flow, plus fuel map corrections, plus short and long term fuel trim. Everyone knows that part. On top of that, there are 2 settings for injector lag time: a lag scalar and a voltage compensation. Additionally, there is a minimum injection time setting that most tuners trip over. That's it, apart from the numerous warmup fueling routines. Basically how a standalone does it. Not trying to be a dick about this at all, but we're not still stuck in 2002 on the ROM tuning front.
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Old Oct 30, 2009 | 01:15 PM
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Originally Posted by vertigo
You think no one likes me? People like to bitch, its what they do, and they are far more likely to do so. Just because I dont have a barrage of nut swingers in here talking random shit, does not mean no one likes me. Does it make you happy that you are socially accepted here by a bunch of broke dick kids? I say that in the nicest ay possible.. really My intrinsic value will never come out on these forums, unless a few enlightened individuals pull it out of me.
Yeah, I'm pretty sure no one likes you here. Maybe try bike tech? No one gives a shit about your intrinsic value. Fact is you have no practical experience and a bunch of shitty cars. What gives any of your arguments validity? Because you believe your own hype?

I'm not sure what a broke dick kid is? Sorry, I'm not down with the ghetto euphemisms. Are you referring to income level, because some of my best friends and coolest people I know are broke motherfuckers when it comes down to it. Who gives a shit?
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Originally Posted by osama tim laden
This things too low... raise it off the towhooks.
(O=O/-ROUGH WORLD-\O=O)
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Old Oct 30, 2009 | 01:23 PM
  #14224 (permalink)  
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Originally Posted by whattadobo
Dude what in the fuck makes you think your so awesome? Your 4x4 fucking s14 with OEM wheels on it? Or the 300zx that is 900270626hp but noones ever seen, or the 1100 other cars you have listed but your like in a mad rush to sell that broke ass s14.

And your right my 240 has nothing worth while, it doesnt have Patricks pride performance coils, ISIS suspension arms, Maziora steering wheel, B&M short shifter, Corbeau fx1 bucket, Nagisa auto low mounts, 60k mile s14 ka/trans, dent free body, only missing the front bumper with working air conditioning and shit.

But your right, its not worth shit. Your a fucking cock eating little faggot, keep your dick sucker shut.
When did I ever say how much HP my Z makes? It has intake, exhaust, ebc @ 15psi, and a rom tune. Those OEM wheels are worth more than your car

I dont live in new port richey, smashed up cars do not make good lawn ornaments in tampa.

That is a pretty long list of garbage you just listed. The difference between you and I is, I know that s-chassis' are not race cars. My s14 was a sporty car, that got good gas mileage, and got me from a to b.

One of my motorcycles is worth more than your car. And my harley is faster than it
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Old Oct 30, 2009 | 01:29 PM
  #14225 (permalink)  
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Originally Posted by vertigo
When did I ever say how much HP my Z makes? It has intake, exhaust, ebc @ 15psi, and a rom tune. Those OEM wheels are worth more than your car

I dont live in new port richey, smashed up cars do not make good lawn ornaments in tampa.

That is a pretty long list of garbage you just listed. The difference between you and I is, I know that s-chassis' are not race cars. My s14 was a sporty car, that got good gas mileage, and got me from a to b.

One of my motorcycles is worth more than your car. And my harley is faster than it
Dude what the fuck is your point?

Im putting together my coupe for ME. I know its not a fucking race car, it is 100% stock other than suspension and interior. Stock exhaust, stock intake, stock everything. And as I build this I am taking care of a daughter, or is that gonna make me look worse?

Cool you drive a harley, I tow them every day. They break down more frequently than 240s, which is sad that you paid that much for a bigger piece of shit than my s13.

I could afford a nicer car, but I bought my car for a fucking reason. I wanted it.

And as far as your bike, Ive ridden bigger, faster, more expensive bikes. So I don't know what your claiming, but what ever it is it failed.

And how fucking old are you dude?

I'm fucking 21, and doing what I want on my own.

Your probably like 30 something years old, and at your age my uncle was working on owning his FIFTH house, his SECOND porsche race car. So you acting like you have so much money, but in reality your just another broke ass fucking 30 year old talking shit to kids on the internet.
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Old Oct 30, 2009 | 01:31 PM
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Nah, Blake's in his early 20's I believe. Maybe late 20's at the latest, he's not some old dude.
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Originally Posted by osama tim laden
This things too low... raise it off the towhooks.
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Old Oct 30, 2009 | 01:33 PM
  #14227 (permalink)  
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Originally Posted by NeedCAforS13
Nah, Blake's in his early 20's I believe. Maybe late 20's at the latest, he's not some old dude.
Either way, hes wasting his time. I don't get my feathers ruffled, over what some arrogant fucking prick says on the internet.
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Old Oct 30, 2009 | 01:33 PM
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Jeeze, I run to the store for some zipties and you guys have made another 10 posts bitching at each other about harleys and china suspension.

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Old Oct 30, 2009 | 01:33 PM
  #14229 (permalink)  
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Originally Posted by Epstein
About reverse engineering, Hi, I reverse engineered the S13SR ECU injector settings in the source code. The stock ECU mainly injects fuel based on MAF sensor flow, plus fuel map corrections, plus short and long term fuel trim. Everyone knows that part. On top of that, there are 2 settings for injector lag time: a lag scalar and a voltage compensation. Additionally, there is a minimum injection time setting that most tuners trip over. That's it, apart from the numerous warmup fueling routines. Basically how a standalone does it. Not trying to be a dick about this at all, but we're not still stuck in 2002 on the ROM tuning front.
No offense taken. So if you have reverse engineered all of that, why haven't you written any custom code / features into the stock ecu? Even if you got the fuel compensation routines in check, people dont cleanly convert from 1 injector to another. Those settings you mentioned are nice, but broad band aids at best. Can you plop 740's into a stock ka, and make it run just like stock without dyno tuning / afr tuning?
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Old Oct 30, 2009 | 01:35 PM
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Originally Posted by vertigo
No offense taken. So if you have reverse engineered all of that, why haven't you written any custom code / features into the stock ecu? Even if you got the fuel compensation routines in check, people dont cleanly convert from 1 injector to another. Those settings you mentioned are nice, but broad band aids at best. Can you plop 740's into a stock ka, and make it run just like stock without dyno tuning / afr tuning?

I know he's done a couple extra features into the stock ecu, just because he's not knocking on your door about it, doesnt mean it hasnt been done.
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