Stock turbo "Dyno" Graphs. "Stock" VS Tuned

[Mrpikolo]

As I posted a while back that I use a program called Virtual Dyno to check my results in tunes. I don't have an AWD dyno close, and, well $#@! paying those prices.

Since it is at the end of racing season, I decided to do some testing on tunes. First, I would need to test 100% stock. Well, tuning that is. The car has mods I can't change quickly. Those are the following:

Mr.5 Intake Mod
Gutted Cats
VTT Inlets

I don't suspect these will get me huge gains, but a little bit would be a good assumption. here is the graph



Pretty darn close to what I would estimate! This is good news for me, so I can actually use my graphs as a way to compare to some others.

Now, next I would try my street tune. This is one I use on the road for daily driving mods as follows:

Mr.5 Intake
Gutted Cats
VTT Inlets
Water/meth injection 625ml nozzle

Now, this is NOT tuned for the VTT inlets. I have not taken the time. Winter is coming anyway, and it won't make any difference. So, I would expect the same results on a stock inlet STOCK turbo car. Also, this map runs the same without meth. I usually use a smaller nozzle and windshield wash. The graph shows it compared to stock



The third one, is stock against my race tune I used when I ran a 11.5 @ almost 122 in the 1/4 mile. I also ran the 11.5@ 118 without the meth on this map(which was a very sketchy run...) Keep in mind, that this is also NOT tuned for the inlets. The mods are the same above. I had a slight hitch/misfire in this run, but it is still good to compare.



Next year, I need to ditch the single nozzle and go with direct port or keep it tuned for the smaller nozzle. It is very hard for the car to control the AFR injecting that much in just a charge pipe.

Here is all three together.



Now, I just need to get the inlets tuned in, so I can flatten that torque band a little better. I hope these may help someone out!

[jt0407]

Did some testing also. Fbo, MMP, e85

[Mrpikolo]

Did some testing also. Fbo, MMP, e85

Nice!

Are you running an upgraded map sensor? I am not, and know I need to upgrade. I suspect my boost on my race map reaches 23sh psi. Looks like yours may do the same, judging by the way power ramps up like it does. Either that, or it wasn't a clean run, rough road?

Keep it up! Getting a flat, consistent spot you use every time is the key to this tool.

[jt0407]

Nice!

Are you running an upgraded map sensor? I am not, and know I need to upgrade. I suspect my boost on my race map reaches 23sh psi. Looks like yours may do the same, judging by the way power ramps up like it does. Either that, or it wasn't a clean run, rough road?

Keep it up! Getting a flat, consistent spot you use every time is the key to this tool.

Boost target is 21.5, but I'm not sure what it hits exactly (stock map sensor). Log was 4th gear on flat smooth road... Car is 6mt,also.

[Mrpikolo]

Boost target is 21.5, but I'm not sure what it hits exactly (stock map sensor). Log was 4th gear on flat smooth road... Car is 6mt,also.

Yeah, you probably are running quite a bit above 21.5 psi . It's okay if you know what to look for. It's a good thing to be aware of it.

[jt0407]

Yeah, you probably are running quite a bit above 21.5 psi . It's okay if you know what to look for. It's a good thing to be aware of it.

Yes sir. Logs are always studied!

[bigdaddyaaron]

Excuse me if this is a dumb question, but does the stock ic flow well enough for the extra air you're pushing? Obviously it flows, but is there more power to be had with an upgrade?

[Mrpikolo]

Excuse me if this is a dumb question, but does the stock ic flow well enough for the extra air you're pushing? Obviously it flows, but is there more power to be had with an upgrade?

For sure! That is my biggest flow restriction at this point. I think that will also help the higher RPM power bit as well. That, and ditching the factory DVs. I'm sure both is costing me a bit of air.

[Torgus]

I wonder how accurate VD is? Amazing what you are are doing with almost no mods. I need meth...

[bigdaddyaaron]

I wonder how accurate VD is? Amazing what you are are doing with almost no mods. I need meth...

Vd seems to be pretty accurate from what I've experienced and seen.

[bigdaddyaaron]

What was your 60ft on the race map?
Your lack of mods has me optimistic for a 11.8-11.9 pass on MT.

Also I'm curious of what difference stock location upgraded inlets and exhaust side inlets have in terms of BAT's.

[Mrpikolo]

I wonder how accurate VD is? Amazing what you are are doing with almost no mods. I need meth...

Its pretty close if you keep the variables in check(road, proper corrections, weight, ect). Really, no different than a real dyno in that case, except you actually are running acceleration numbers on the road.

What was your 60ft on the race map?
Your lack of mods has me optimistic for a 11.8-11.9 pass on MT.

Also I'm curious of what difference stock location upgraded inlets and exhaust side inlets have in terms of BAT's.

I am usually running 1.75-1.8 60 foots. I have pulled off a few low 1.7s on my race map. I think there could be some adjustments that I can make to get the car more responsive off the line.

I kind of am curious to what the real difference would be too. Usually, changes to temperature and pressure are exponential on forced induction applications.

[csu87]

I wonder how accurate VD is? Amazing what you are are doing with almost no mods. I need meth...

It all depends on how you set it up. Best way to set it up is compare to an actual dyno. Or at the very least, get a baseline stock run and set it up off that and never touch the settings again. You also need to use the same strip of road to make your comparison runs, because even slight changes in road elevation, conditions... can affect the VD by a decent amount.

If you weigh the car and accurately measure your tire diameter and dont compare to actual dynos or get the baseline, people tend to be withing 5-10% of true dyno readings.

Without setting it up properly, it is only good to monitor changes between mods, not claim numbers.

[mastawyrm]

I used VD to compare different tunes. I found a road that seemed like a good test strip, flat, untraveled, long enough to do a 3rd gear pull. I would log each tune in both directions then compare in order to get an idea of the averages and make sure I wasn't fooled by any light bumps.

[weebles]

I wonder how accurate VD is? Amazing what you are are doing with almost no mods. I need meth...

It's as accurate as you let it be, road and weather conditions obviously effect it a lot but given a good road and repeatable conditions it's a perfect tuning tool. You can easily make it read whatever you want really by skewing numbers but if you repeat everything the same each time you use it, measuring gains is bang on. Which in the end is exactly what a dyno is used for anyways.

[weebles]

Here was my car with RB turbos, TFT inlets, fbo, 94 e10 and 100% meth with around 18 psi but the tune / jb4 settings needed tweaking at the time as you can see I was getting boost oscillations.

[jt0407]

Here was my car with RB turbos, TFT inlets, fbo, 94 e10 and 100% meth with around 18 psi but the tune / jb4 settings needed tweaking at the time as you can see I was getting boost oscillations.

http://www.60-130.com/images/im...4fay56et-1.jpg

smoothing 5, seems to be what everyone is using. I don't think smoothing 2 is very accurate.