I haven't posted on here for a long while, I thought I should try it out.
272hp and 276 tq @ .6 bar ~ 9psiT3/T4 57trim .63 a/renthalpy romp-fab maniIt's running a tad lean @ WOT, but it shouldn't be hard to tune a half a point. it was around 13:1 at the higher rpm. the dyno doesn't show it as they couldn't datalog my wideband. I should have used theirs, oh well.
My ka-t dyno numbers
-
Structure240sx
- Posts: 5615
- Joined: Sun Oct 06, 2002 5:04 pm
-
nissanfanatic
- Posts: 1314
- Joined: Mon Nov 01, 2004 8:41 pm
- Car: 1992 Nissan 240sx SE
- Contact:
Not towards redline. If he was doing 13:1 around peak VE(AKA peak torque), that would be dangerous as cylinder temps are highest there. But towards the end, its good to lean out..
Nice numbers. Nice, efficient setup you have there!
Whats up with the 1.20 correction factor? Pressure correctoin doesn't apply on forced induction vehicles...
Nice numbers. Nice, efficient setup you have there!
Whats up with the 1.20 correction factor? Pressure correctoin doesn't apply on forced induction vehicles...
eddiec , i'll try to get a pic near the wastegate area.nissanfantic,i don't know what's going on there with the correction factor. I thought altitude affects all cars to some extent. I know that supercharged cars are affected considerably as they go higher in altitude. More so with naturally aspirated cars. Turbocharged cars are least affected. but i'm not too fond with numbers so whatever dyno people told me is what i went with.
-
nissanfanatic
- Posts: 1314
- Joined: Mon Nov 01, 2004 8:41 pm
- Car: 1992 Nissan 240sx SE
- Contact:
No..
Turbochargers are used as "correction devices," for pressure issues on aircraft.
No matter what, your manifold pressure is 9psi. Pressure is not changing in there as a result of atmospheric pressure therefore power is not changing as a result of atmospheric pressure.
Supercharged cars can be affected due to the fact that they simply put air in at a constant rate and are not governed by what pressure the manifold is seeing. They are geared and then they produce whatever pressure they produce.
Naturally asperated cars are affected the most no doubt becuase atmospheric pressure determines how much air enters the engine. They have no way of adding more air. So if atmospheric pressure goes down, then airflow goes down for them. They are the ones who NEED correction to get accurate numbers. Its fair for them.
But the wastegate isn't going to open any sooner because atmospheric pressure goes down. There are slight issues regarding your temperature as it looks to be quite cold there.. but just to keep everyone on a level playing field, everyone now uses UNCORRECTED numbers. Its just that some people (Not you) like to use them to their advantage. Like if they cause the number to go up, they use them, but if they cause the number to go down, they don't.
Turbochargers are used as "correction devices," for pressure issues on aircraft.
No matter what, your manifold pressure is 9psi. Pressure is not changing in there as a result of atmospheric pressure therefore power is not changing as a result of atmospheric pressure.
Supercharged cars can be affected due to the fact that they simply put air in at a constant rate and are not governed by what pressure the manifold is seeing. They are geared and then they produce whatever pressure they produce.
Naturally asperated cars are affected the most no doubt becuase atmospheric pressure determines how much air enters the engine. They have no way of adding more air. So if atmospheric pressure goes down, then airflow goes down for them. They are the ones who NEED correction to get accurate numbers. Its fair for them.
But the wastegate isn't going to open any sooner because atmospheric pressure goes down. There are slight issues regarding your temperature as it looks to be quite cold there.. but just to keep everyone on a level playing field, everyone now uses UNCORRECTED numbers. Its just that some people (Not you) like to use them to their advantage. Like if they cause the number to go up, they use them, but if they cause the number to go down, they don't.
-
1WheelWonder
- Posts: 961
- Joined: Wed Jan 19, 2005 11:16 am
- Car: 1991 Nissan 240sx
-
nissanfanatic
- Posts: 1314
- Joined: Mon Nov 01, 2004 8:41 pm
- Car: 1992 Nissan 240sx SE
- Contact:
-
HolyShiznit
- Posts: 732
- Joined: Wed Jun 04, 2003 6:57 am
- Car: Working on my car
Re: (nissanfanatic)
That's a HUGE correction. So your numbers are roughly 20% exaggerated compared to others. For some reason I can't do the mental math required to show what your uncorrected numbers would be...
Nice set up though regardless.
Nice set up though regardless.
Re: (nissanfanatic)
No, I didn't mean it like that. Even your numbers @ 7psi is higher than mine @ 9psi, both of them uncorrected. What would've caused your numbers to be much higher then mine if altitude isn't the deterimining factor? sorry if i caused any confusionnissanfanatic wrote:I never dynoed at 9psi....
Its not what other people make, its what you make. Set to uncorrected and thats that. Everybody else uses it...
-
bruinbear714
- Posts: 1159
- Joined: Thu Sep 05, 2002 9:58 pm
- Contact:
Re: (NiSilS14)
Is it just me, or does that A/F graph look FLAT, as in Looks like it wasn't instrumented correctly?
-
nissanfanatic
- Posts: 1314
- Joined: Mon Nov 01, 2004 8:41 pm
- Car: 1992 Nissan 240sx SE
- Contact:
Re: (NiSilS14)
More efficient turbo, better tune, IDK man...
If you have ever heard of vertigo, take a lesson from it. What it is.. is when pilots are flying and doing advanced maneuvers, going upside down, ect. What will happen is.. they will look at their instrumentation and it will show that they are upsidedown.. Some of them freak out because they don't believe they are.. They notice that altitude is low and that they are going down. They pull up and what happens.. They go down faster. You can pretty much guess what happens from there.
Moral is.. trust your instrumentation.
If you have ever heard of vertigo, take a lesson from it. What it is.. is when pilots are flying and doing advanced maneuvers, going upside down, ect. What will happen is.. they will look at their instrumentation and it will show that they are upsidedown.. Some of them freak out because they don't believe they are.. They notice that altitude is low and that they are going down. They pull up and what happens.. They go down faster. You can pretty much guess what happens from there.
Moral is.. trust your instrumentation.
Re: (bruinbear714)
i didn't use their wideband, should have though.bruinbear714 wrote:Is it just me, or does that A/F graph look FLAT, as in Looks like it wasn't instrumented correctly?