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Thread: Budget Build

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Posts: 231-240 of 386
2009-02-25 18:52:42
#231
Originally Posted by MAYIMBEZ
so dynojets are better...hmm so many ppl r gonna be sad after this thread.
i'll use my butt dyno to tell me if i gained any power after i install parts. Im so confused now i dont even wanna bother dynoing my shyt after im done.


A dyno is only truly accurate against itself. That's why the big boys tune on the same dyno and dont post numbers, because that's all it is, a number.
2009-02-25 18:54:14
#232
Originally Posted by Andreas
Here is the original dyno of 231 WHP




Here is what the dyno should look like with 221 WHP



This is in no way accurate Mr. Miko. You cannot guess what the numbers are when the packs start to give false readings, as the false readings have no real basis.
2009-02-25 18:58:31
#233
Originally Posted by BenFenner
I'm not trying to add to the confusion in this thread, but since we're on the topic of dynos and accuracy I thought I'd take a moment to explain my feelings on dyno accuracy.
I've heard it said many times that the actual numbers spit out by a dyno are less important than their repeatability. Basically, who cares if it says you make 100 WHP as long as it shows increases and decreases properly?
Well, I care god damn it, and I'll tell you why.

Many items at our disposal (turbos, injectors, etc) have well known HP potential, limits and behavior based on power output. If the dyno says I'm making 310 WHP on a T28 at 15 psi then I know I'm getting to the edge of what this turbo is capable of. I can make an informed decision on my tuning based on this. If the dyno says I'm making 270 WHP on a T28 at 15 psi and that's accurate then it tells me many other things. If it is "just reading low" and I'm really at 310 WHP then I'm pissed off because I can't trust the dyno output and make decisions accordingly.

I'll say this, for me at least, the desire for a corrected dyno is much more than just to accurately compare a dyno across the country. Dyno accuracy is essential for engine tuning. Mountains of information becomes useless without it.


The packs offer a highly accurate and precise option. It needs to have a built in ACCURATE weather station, such as XX has. The numbers on the packs are very repeatable and can pick up minute changes in a setup. It really is an amazing dyno solution albeit the sometimes glitchy software.

Originally Posted by gtirwezz
numbers are for pub talk. its all how the car drives and who is driving it that counts. well done anyway jun


As if Jun had anything to do with building the motor.
2009-02-25 19:00:37
#234
Sylar!!!!
2009-02-25 19:04:29
#235
Here are some more dyno sheets:

Airfuel Chart



Here was a previous run, starting to work our way up in power.
The car was runing real rich. 11.8 to 1 AFR.





These 2 runs were playing with vvl switch.




There were sevrel runs done with the car. We sat in the high 220 range for a few runs. Many people can make power like this they need to spend time with tuning there vehicles. Many cars are running the basic calum tune and make little power. You have to remember that he only gives you a basic setup. These tunes still need work. Aem will allow us to tune above the 8200 spot from the stock ecu. We can not control the air fuel after this point with the stock ecu. With a proper setup Im sure you can make more power. As far as the pyramid theory I believe what happens is the packs are slowing the car down in the run. Basicaly you set a ramp time window that the car will run. This will run that car through the time frame that is setup. Every car is different. When the car reaches x amount of time and The rpm is not reached the car is loaded to slow it down. This causes dips in the graph. The wheels would still Have to spin that hard to make that number. This is what makes these dyno more sensitive.
Glitch or not I still think it made that hp on the dynos. I think this is a huge breakthrough that people are looking for. We all see and talk about who is better but no one can make the numbers. This is why so many people are discouraged by this data. I have been tring to tune the best I can. Some cars have problems and can only make so much. They have to sort through them and create solution. I have been working with Jun and Kesi for many years. We have been through many slopes. There are many combinations that we have done. Many things work many Dont. You can hate or you can join us in a breakthrough.

Headwork on Ve cars I believe are not much power makers. Porting and polishing can make the ports bigger but can also slow the velocity down. In turn creat less power. I have a flow bench played with the head and I think the stock ports are good enough for making plenty of power. This can get into a huge discusion that we can start another thread on. I hope someone can make more power with these motors to prove that you can make it happen.

I have 2 more VEs to tune in the near future 1 being my old White car. I plan on not stoping and I want all my VE guys making over the 210 whp mark. Aem Or with a Calum board.

I just want to thank JR for letting me tune the car. We have many more secrets just keep tuning in.
2009-02-25 19:06:53
#236
I <3 Eneos 0W-50.
2009-02-25 19:10:23
#237
Originally Posted by supercowboy
Here are some more dyno sheets:

Airfuel Chart



Here was a previous run, starting to work our way up in power.
The car was runing real rich. 11.8 to 1 AFR.





These 2 runs were playing with vvl switch.




There were sevrel runs done with the car. We sat in the high 220 range for a few runs. Many people can make power like this they need to spend time with tuning there vehicles. Many cars are running the basic calum tune and make little power. You have to remember that he only gives you a basic setup. These tunes still need work. Aem will allow us to tune above the 8200 spot from the stock ecu. We can not control the air fuel after this point with the stock ecu. With a proper setup Im sure you can make more power. As far as the pyramid theory I believe what happens is the packs are slowing the car down in the run. Basicaly you set a ramp time window that the car will run. This will run that car through the time frame that is setup. Every car is different. When the car reaches x amount of time and The rpm is not reached the car is loaded to slow it down. This causes dips in the graph. The wheels would still Have to spin that hard to make that number. This is what makes these dyno more sensitive.
Glitch or not I still think it made that hp on the dynos. I think this is a huge breakthrough that people are looking for. We all see and talk about who is better but no one can make the numbers. This is why so many people are discouraged by this data. I have been tring to tune the best I can. Some cars have problems and can only make so much. They have to sort through them and create solution. I have been working with Jun and Kesi for many years. We have been through many slopes. There are many combinations that we have done. Many things work many Dont. You can hate or you can join us in a breakthrough.

Headwork on Ve cars I believe are not much power makers. Porting and polishing can make the ports bigger but can also slow the velocity down. In turn creat less power. I have a flow bench played with the head and I think the stock ports are good enough for making plenty of power. This can get into a huge discusion that we can start another thread on. I hope someone can make more power with these motors to prove that you can make it happen.

I have 2 more VEs to tune in the near future 1 being my old White car. I plan on not stoping and I want all my VE guys making over the 210 whp mark. Aem Or with a Calum board.

I just want to thank JR for letting me tune the car. We have many more secrets just keep tuning in.


I hope you did not take any offense to this John, as you have my respect. Your client however does not. I will call you shortly.
2009-02-25 19:33:52
#238
meh all u.s. dyno's are willy enlarger pumps imo, they all seem to make magical figures that turbos, injectors, mafs etc just simply cant produce. And the only REAL dyno that will give comparable figures is a MAINLINE!

Now i understand clints post realizing that he is from nz
2009-02-25 21:40:19
#239
Congrats on the build & numbers anyway...I have been to a few different dynos with the same setup & notice a difference in the numbers.
2009-02-25 22:25:45
#240
Originally Posted by snickers


Another thing i've noticed about sr20ve motor setups is that most, and almost all of them with great setups "200whp+" setups all make 200whp at almost exactly 7000rpm. 6900-7100 on average. donttazmebro's car makes it at about 6300rpm or so which is about 10% sooner and oh look, thats 10% more displacement.

The dyno that Jun posted was making 200whp at about 6300rpm so either it had a stroker crank in it, or like i was thinking, the numbers were dynapack so you need to lower by 7-8% to correct. and when you do so (after removing the glitch pyramid) you get about 205whp DYNOJET and now you are making 200whp @ 7000rpm give or take. Just something i've noticed with nearly ALL good VVL setups.



this is a really good point. this is the first thing i noticed, for him to be making the same power as the avg but about 800 rpm sooner would mean either a crazy head or something is off with the dyno... but honestly im not hatin at all, good numbers, its really nice to see what a high comp vvl with decent supporting mods will do. lets see those track times! good luck
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